94 results about "Dye laser" patented technology

A device for irradiating tissue includes a fluorescent element for receiving pump radiation and responsively emitting radiation having different spectral characteristics than the pump radiation. A redirector receives emitted radiation promulgated in a direction away from a tissue target and redirects the radiation toward the target. The pump radiation may be supplied, for example, by a flashlamp or frequency-doubled neodymium-doped laser. Use of the device provides an inexpensive and effective alternative to conventional dye laser-based systems for various medical therapies, including treatment of vascular and pigmented lesions, tattoo and hair removal, and photodynamic therapy (PDT).

The present invention relates to a hybrid photonic crystal fiber, into the core of which a functional material is injected. The hybrid photonic crystal fiber of the present invention comprises: a central hole having a diameter of 4 to 15 μm extending in the longitudinal direction; an inner cladding also formed in the longitudinal direction outside the central hole, having a hexagonal arrangement of air holes, each of which has a diameter of 2 to 5 μm and a lattice constant of 4.5 to 7 μm; an annular outer cladding surrounding the outer surface of the inner cladding; and a core formed by filling a functional material in some of the air holes including the central hole. According to the present invention, changes in the state, i.e. the liquid, liquid-crystal, or biofluid states, of the functional material that fills the core that has a variety of shapes may enable the modulation of light intensity, wavelength, phase, and polarization, and thus enable various photonic networks to be produced. The hybrid photonic crystal fiber of the present invention may serve as various optical sensors capable of sensing changes in refractive index caused by external stresses such as temperature and pressure. The hybrid photonic crystal fiber of the present invention may be used as a light source for a fluorescent dye laser for a visible ray zone using fluorescent dye, or for an ultra-wideband laser of 700 nm or higher using high nonlinear liquid.

An instrument for photodynamic therapy applies treatment light from a dye laser, white light, and ultraviolet fluorescence excitation light from an LED onto a lesion and surrounding areas in a time-multiplexed manner. The reflected white light is analyzed in a spectrometer to determine a correction for the dynamic optical spectral properties of the patient's tissue. Light emitted by fluorescence from the lesion and the surrounding areas is analyzed in another spectrometer, and the results are corrected in a computer, using the correction. An optical switch has been developed for the instrument, using a bistable solenoid and a sled.

The invention relates to a microfluidic dye laser including a pump light source configured to provide light having a pump light wavelength. The microfluidic dye laser also includes an elastomer substantially optically transparent at the pump light wavelength and at a microfluidic dye laser wavelength. A microfluidic channel configured to accept a fluidic dye is defined in the elastomer. An optical grating is formed in a single mode 3D waveguide in the microfluidic channel in order to provide a single mode microfluidic dye laser light as output in response to illumination with light from the pump light source. In another aspect, the invention features a method of tuning a wavelength of a microfluidic dye laser light by mechanically deforming the elastomeric laser chip to change the grating period in the optical cavity.

Disclosed is a transition metal complex represented by the following formula (1):(wherein M represents a transition metal element; K represents an uncharged monodentate or bidentate ligand; L represents a monodentate or bidentate monoanionic or dianionic ligand; m and o represent an integer from 0 to 5; n represents an integer from 1 to 3; p represents an integer from 0 to 4; W— represents a counterion; and Y1 to Y4, R1, and R2 each independently represent a hydrogen atom, an alkyl group, a cycloalkyl group, a heterocycloalkyl group, an aryl group, an aralkyl group, a heteroaryl group, an alkenyl group, an alkynyl group, or an alkoxy group).

The disclosed laser with adjustable Q pulse width comprises: an output mirror, a laser rod, a Pockel's box together with a first full deflection mirror coaxial arranged on a straight line, a first polaroid between the Pockel's box and first deflection mirror, at least one movable 1 / 2 glass filter and polaroid (7) between former first polaroid and the first deflection mirror, a second full reflection mirror (11) near the polaroid (7) to deflect all laser from (7) backwardly. This invention is simple and convenient, and can be used in different lasers.

The present invention belongs to the field of photoelectric material, in the concrete, it is a 9-position anthracene and pyrene substituted fluorenic conjugated derivative material and its preparation method, and said material can be used in the field of organic electronics of organic / polymer electroluminescence material, organic integrated circuit, organic solar cell, organic field effect transistor, dye laser, organic non-linear optical material and fluorescent probe, etc. Said compound can utilize 9-position twice substitution structure to introduced the anthracene and pyrene into the high-effective luminescent conjugated fluorene system. Besides, said invention also provides several advantage of said conjugated derivative material.

The invention provides a pulse infrared differential absorption laser radar system for detecting a carbon dioxide concentration profile, which comprises a laser emitting subsystem, an optical receiving subsystem and a data acquisition processing subsystem, wherein the laser emitting system comprises a seed laser, an Nd: YAG laser, a dye laser, a first reflecting mirror, a first half-reflecting half lens, a second half-reflecting half lens, a frequency doubling crystal, a difference frequency crystal, a first spectroscope and a wavelength control unit. The system can not only detect column concentration of atmospheric CO2, but also can obtain CO2 concentration profile distribution on a vertical path, particularly atmospheric CO2 concentration information near a boundary layer, and has important significance for carbon cycle research. The system has the advantages of low technical requirements, high stability, high detection precision and easy popularization, and is an important means for achieving atmospheric CO2 concentration profile measurement.

The invention relates to spirofluorene xanthene phosphine oxide electro-phosphorescent main materials and synthesis and application methods thereof, belongs to the field of photoelectric material science and technology, and in particular relates to four spirofluorene xanthene organic phosphine oxide materials and application of the materials in the field of organic electronics such as organic electroluminescent materials, organic solar cells, organic field-effect tubes, dye laser, organic nonlinear optical materials, fluorescent probes and the like. The series of materials are obtained by introducing diphenyl phosphine oxide groups to the 2nd site, the 2nd and 7th sites, the 2nd' site and the 2nd' and 7th' sites of spirofluorene xanthene respectively. The series of compounds have good charge transfer performance, thermal stability and high triplet energy level (ET=-2.86eV), and can be used as main materials and applied in phosphorescent devices. When the series of compounds are applied in the organic electro-phosphorescent devices, the maximum external quantum efficiency is 10.78 percent and the maximum brightness is 8,582cd / m<2> in the blue phosphorescent device; and in the green phosphorescent device, the maximum external quantum efficiency is 19.1 percent, and the maximum brightness is 16,943cd / m<2>.

Disclosed are pyran derivatives, which have distinctive sensitivity to visible light and distinctive luminous ability. The derivatives are useful in photopolymerization, electroluminescence, and dye lasers, and are obtainable through a step of reacting a compound having a 4-cyanomethylene-2-methyl-4H-pyran skeleton with a compound having a 3-formylcoumarin skeleton.

The disclosed micro-fiber circular-junction dye laser with swift-away wave coupled gain comprises: using a first micro-fiber to prepare circular-junction resonant cavity with two ends connected with a mono-mode fiber and second micro-fiber respectively; dipping the resonant cavity into a solution doped gain medium to generate laser and output from the second micro-fiber. This invention is small-size, stable and convenient to be integrated.

The invention discloses a narrow-linewidth and long-time-stable frequency dye laser. The narrow-linewidth and long-time-stable frequency dye laser includes a reference-used laser generator, a dye laser, a reference cavity, a polarization beam splitter, a transmission cavity, a light detector, a data acquisition card, a processor, a signal adder and a function generator. According to the narrow-linewidth and long-time-stable frequency dye laser of the invention, two kinds of frequency stabilization methods are combined together to generate a narrow-linewidth and long-time-stable frequency laser beam, and the linewidth of the laser beam is 200kHz, and the frequency long-time drift of the laser beam is smaller than 2MHz. The narrow-linewidth and long-time-stable frequency dye laser of the invention has the advantages of simple circuit design, convenient realization and high scalability. The invention also provides a frequency stabilization method of the dye laser and is suitable for improving the long-time stability of the frequency of any dye lasers.

The invention relates to a linear conjugated polymer derivate material with a 9-pyrenyl fluorine structure and a preparation method thereof. The material can be applied in the plastic electronic fields such as polymer electroluminescent materials, polymer integrated circuits, polymer solar batteries, polymer thin-film transistors, polymer dye lasers, polymer nonlinear optical materials, fluorescent probes and so on. The polymer combines two high-performance systems of pyrene and fluorine together by non-conjugated means, and has the advantages that: firstly, the raw materials are low-price, and the synthetic method is simple and convenient; and secondly, the material also has obviously improved hole injection capacity, hole transmitting capacity and electronic transmitting capacity besides good solubility, thermal stability and rheologic property, and a hole injection layer, a hole transmitting layer and an electronic transmitting layer can be not required in an electroluminescent device, thereby the technique of the device is simplified. The electroluminescent device prepared by utilization of the material is satisfactory in the aspects of brightness, luminous efficiency, voltage-resistant stability and so on.

The invention provides a device for broadband CARS detection of 1 delta oxygen and a use method thereof, the device includes a pulse laser and a broadband dye laser, after pumped lasers outputted by the pulse laser pass through a beam splitter mirror, part of the pumped lasers outputted by the pulse laser are incident to the dye laser to generate broadband dye laser; the other part of the pumped lasers pass through a total reflective mirror and a dichroic mirror, then are combined with the broadband dye laser, and pass through an optical cavity light transmitting hole to focus in an optical cavity for generating four-wave mixing to produce coherent anti Stokes Raman scattering (CARS) light, and the CARS light passes through a low pass filter, and received and collected by a wavelength analyzer. The uses the broadband dye laser, and can simultaneously obtain CARS spectral signals of ground state oxygen and delta oxygen, so that the delta oxygen content can be determined according to the intensity ratio of the (CARS) light signals of the ground state oxygen and delta oxygen. By arrangement of the broadband dye laser, fast on-line detection of one or one kind of gases with similar Raman activity can be achieved, and the detection efficiency can be improved.

This invention disclosed a high efficiency detection method for alkaline earth ions. Three dye laser wares were activated by a Nd:YAG laser ware, alkaline earth atomic beam was illuminated by two dye laser wares to produce atom samples with different n, l value; ionizate the atom by the third dye laser wares. This invention has high efficiency no matter whether the n value of Rydberg atom was high. It improved the bug of traditional method and could be applied to every kind of alkaline earth atom.

A luminescent material includes transition metal complex comprising a ligand in which an electron density of a p orbital of a highest occupied molecular orbital level is higher than 0.239 and lower than 0.711 when the electron density is calculated according to quantum chemical calculation (Gaussian09 / DFT / RB3LYP / 6-31G), the p orbital being in the outermost shell of an element coordinated to the metal.

The invention discloses a multicomponent simultaneous measurement device in optics engine cylinder combustion process, and the multicomponent simultaneous measurement device is used to study the formation mechanism of carbon smoke in an engine cylinder. 266nm, 283nm and 1064nm three beams of detection laser are generated by cooperation of a Nd: YAG laser and a dye laser with a frequency doubling crystal group and a laser reflector group; energy distribution of the three beams of detection laser is achieved by adjustment of the angle of the frequency doubling crystal group, the three beams of detection laser excite polycyclic aromatic hydrocarbon fluorescence, hydroxyl fluorescent fluorescence and carbon smoke incandescence; a beam splitter mirror group, a filter group, a ICCD (Intensified charge coupled device) camera group and an acquisition computer group are used for acquisition of polycyclic aromatic hydrocarbon fluorescence, hydroxyl fluorescent fluorescence and carbon smoke incandescence signals; and the laser induced fluorescence and laser induced incandescence methods can be used for qualitative measurement of the concentration of polycyclic aromatic hydrocarbons, hydroxy and carbon smoke in an optics engine cylinder. The three components can be simultaneously measured only by use of one Nd: YAG laser and one dye laser, and the measuring device cost and the operation difficulty can be greatly reduced.

The invention discloses an adjustable and controllable dye laser based on light fluid. The adjustable and controllable dye laser comprises a pumping light source, a work medium and a resonant cavity, wherein a circular conical surface external reflector and the resonant cavity are sequentially arranged in an optical axis direction of an emergent light beam of the pumping light source, the resonant cavity is a transparent column body, in addition, a first optical reflector, a dye molecule suspension liquid region, a first liquid lens, a second liquid lens, a gas cavity and a second optical reflector are sequentially arranged in a cavity body of the resonant cavity in the optical axis direction, the dye molecule suspension liquid region is used as a work medium, a first electrode and a second electrode used for regulating and controlling the first liquid lens and the second liquid lens are arranged on the outer surface of the resonant cavity, and a first circular conical surface internal reflector and a second circular conical surface internal reflector are also arranged in a way of using an optical axis as a center symmetric axis. The adjustable and controllable dye laser based on light fluid has the advantages that the output laser mode is controllable, the light beam quality is good, the flexibility is high, and the like.

The invention provides a thin disk 515nm all-solid-state green laser. The laser comprises a pumping source, a first spherical coupling mirror, an output coupling mirror, a second spherical coupling mirror, a gain medium and a heat sink, wherein the gain medium is welded on the heat sink via a welding layer; the rear surface of the gain medium and the concave surface of the output coupling mirror form a plano-concave resonant cavity; the output coupling mirror is arranged on the emergent light path of the gain medium; the pumping source, the first spherical coupling mirror and the second spherical coupling mirror form a four-pass pumped optical coupling system; the first spherical coupling mirror and the pumping source are arranged at the same side of the plano-concave resonant cavity; the first spherical coupling mirror is arranged on the path of the pumping light transmitted by the pumping source; and the second spherical coupling mirror is arranged on the path of the pumping light reflected by the gain medium. The miniaturized thin disk all-solid-state green laser can realize 515nm of wavelength and can replace the dye laser and argon ion laser.

The present invention relates to a solid dye resonator, and to a solid dye laser hand piece comprising same. The solid dye resonator comprises: solid dye; a high-reflection mirror; an output coupler; a first mounting plate on which the high-reflection mirror is mounted; a second mounting plate which is spaced apart from the first mounting plate and which has a surface on which the output coupler is mounted; a driving motor mounted on the first mounting plate, such that a motor shaft is directed toward the second mounting plate; and a rotary shaft interposed between the first mounting plate and the second mounting plate, and connected to the motor shaft of the driving motor such that the rotary shaft interlockingly rotates with the rotation of the driving motor.

The invention discloses a micro-nano imaging detection experiment device based on photoacoustic beam shaping. The micro-nano imaging detection experiment device comprises a dye laser light source, a light beam shaping forward scanning probe based on nonlinear photonic crystals, a first reflecting mirror, a three-dimensional electric platform, a beam expanding mirror, frosted glass, coupling liquid, an ascending and descending table, a sample pool, an energy converter, an embedded wavefront control backward tracking probe, a lock phase amplifier, a data collector and a computer. The experimentdevice can effectively work in a complicated photoacoustic field regulation control and self-adaption wavefront control marking-free detection mode; the computer is respectively connected with the dyelaser light source, the light beam shaping forward scanning probe, the three-dimensional electric platform, the energy converter, the light beam shaping forward scanning probe and the lock phase amplifier through signal wires. The multi-signal extension compensation correction, fast shearing, precise registering and the like are realized; The qualitative, positioning and quantitative EA (extension analysis) on multi-mode relevant target points of occurrence, development, transfer and induction apoptosis can also be realized.

The invention relates to a conjugated polymer material of fluorene and perylene and a preparation method thereof. The material can be applied to the field of plastic electronics of a polymer electroluminescence material, a polymer integrated circuit, a polymer solar battery, a polymer thin film transistor, polymer dye laser, a polymer non-linear optical material, a fluorescence probe and the like. The polymer combines the two high-performance systems of the fluorene and the perylene by utilizing a copolymerization strategy and has the following advantages: (1) low cost of raw materials, and simple and convenient synthesis method; and (2) good dissolubility, heat stability and rheological property, obvious enhancement of hole injection capacity, hole transmission capacity and electronic transmission capacity, no requirement of a hole injection layer, a hole transmission layer and an electronic transmission layer in an electroluminescence device, and technology simplification of the device. Moreover, the electroluminescence device prepared by the material of the invention can obtain satisfactory results on the aspects of the luminance, the luminous efficiency, the voltage resistance stability and the like.

An organic light-emitting element which emits delayed fluorescence comprising specifically substituted 1,2,4-triazole derivatives, 1,2,4-oxadiazole derivatives or 1,2,4-thiadiazole derivatives in the light-emitting layer, a light-emitting layer comprising the specifically substituted 1,2,4-triazole derivatives, 1,2,4-oxadiazole derivatives or 1,2,4-thiadiazole derivatives, specific specifically substituted 1,2, 4-triazole derivatives, 1,2,4-oxadiazole derivatives and 1,2,4-thiadiazole derivatives and an organic light emitting element comprising the specific 1,2,4-azole derivatives as well as a light emitting layer comprising the specific 1,2,4-azole derivatives; the use of the specifically substituted 1,2,4-triazole derivatives, 1,2,4-oxadiazole derivatives and 1,2,4-thiadiazole derivatives for electrophotographic photoreceptors, photoelectric converters, sensors, dye lasers, solar cell devices and organic light emitting elements, and the use of the specifically substituted 1,2,4-triazole derivatives, 1,2,4-oxadiazole derivatives and 1,2,4-thiadiazole derivatives for generating delayed fluorescence emission.

The invention discloses a prism beam expanding device, which consists of a prism, a prism pressing plate, a prism platform, a rotary table and a platform supporting rod, wherein the prism is fixedly arranged on the prism platform through the prism pressing plate; the prism platform is fixed to a rotating shaft of the rotary table; the platform supporting rod is fixed to a pedestal of the rotary table; and the entire prism platform is driven by the rotary table to rotate within a certain angle range by taking the platform supporting rod as an axis. The two-dimensional pitch of the prism is adjustable, and the height of the platform supporting rod is adjustable. The device is mainly used in a line-width reduction module of an excimer laser or a dye laser. The prism beam expanding device is characterized in that accurate adjustment can be realized in four dimensions so as to quickly and efficiently adjust the prism light path. In addition, the line width of the laser spectrum can be finely adjusted within a certain range by adjusting the angle between the light beam and the prism platform.

The invention relates to a microfluidic dye laser including a pump light source configured to provide light having a pump light wavelength. The microfluidic dye laser also includes an elastomer substantially optically transparent at the pump light wavelength and at a microfluidic dye laser wavelength. A microfluidic channel configured to accept a fluidic dye is defined in the elastomer. An optical grating is formed in a single mode 3D waveguide in the microfluidic channel in order to provide a single mode microfluidic dye laser light as output in response to illumination with light from the pump light source. In another aspect, the invention features a method of tuning a wavelength of a microfluidic dye laser light by mechanically deforming the elastomeric laser chip to change the grating period in the optical cavity.

The present invention discloses a self-stabilized spectroscopic technology in a four-wave frequency mixing experiment. If the DFWM spectral technology needs to be practical, the stability problem of the light path is solved first. The technology comprises two prefect reflection mirrors and two purpose-made beam splitters. The beam splitter BS1 (1) is arranged in parallel with the perfect reflection mirror M1 (2), and forms an angle of 45 degrees in the direction of the laser beam outputted from a dye laser (3). After split by the beam splitter BS1 (1), the laser beam V is subjected to the perfect reflection mirror M1 (2), the beam splitter BS2 (3), the perfect reflection mirror M1, the beam splitter BS2 and the perfect reflection mirror M2 (4), thereby forming four beams which are of the same light propagation direction and parallel with each other and vertical spatially, and forming a rectangle by the propagation direction. By adjusting the distances between the two perfect reflection mirror (M) and the two purpose-made beam splitters (BS), a square is formed. After focused by a focusing lens f1 (5), the light spots of the two light beams are overlapped. The technology is applied to the field of optics.

The invention relates to a laser treating equipment whose emission wavelength is 593nm, 594nm, or 589nm which is near to ideal the absorption peak 577nm of oxidized hemoglobin, and since it is the full-solid laser treating equipment, compared to dyestuff laser, said treating equipment can significantly reduce the cost. The pulse length of output laser is 3-100ms which is continuously adjustable and each pulse can be divided into two or more 0.2-3ms long-pulse laser. Said long pulse laser treating equipment can replace present dyestuff laser treating equipment to treat the erythema lesion.

The invention relates to a mixed power storage system of laser wireless power transmission and flywheel energy storage. The mixed power storage system comprises an energy transmitting terminal and an energy receiving terminal, wherein the energy transmitting terminal comprises an energy conversion device converting regeneration energy into electric energy, a laser drive circuit and a laser. The energy conversion device generates electric energy, the laser drive circuit drives the laser to output laser light, and the laser is a tunable dye laser. A laser beam expanding apparatus is arranged between the energy transmitting terminal and the energy receiving terminal according to the distance between the two, shapes laser light output by the laser, and expands output light spots which can be covered uniformly on a solar battery array (2) on the receiving terminal. The energy receiving terminal comprises a solar battery array (1) and a flywheel energy storage module. The mixed power storage system is highly efficient.

The invention provides a wavelength correction control system for a dye laser. The system comprises the dye laser, a sample pool, a signal detection unit and a signal processing unit, wherein laser emitted by the dye laser is subjected to frequency multiplication by a beta-Ba2O4 crystal and then output, the laser output after frequency multiplication is split by a beam splitter and then enters the sample pool through an entrance window; the signal detection unit comprises a fluorescence collection lens of a narrowband filter and is used for filtering interference and focusing a fluorescence signal excited by laser, the fluorescence signal is acquired by a photomultiplier, and a laser energy signal is monitored by a photodiode. A signal acquisition card of the signal processing unit receives the signals acquired by the photomultiplier and the photodiode and transmits the signals to a computer, and the computer controls gratings of the dye laser and parameters of the beta-Ba2O4 crystal through a USB, so that the laser output wavelength is regulated. With the adoption of the wavelength correction control system, the wavelength of the dye laser on a to-be-detected substance excitation line can be accurately located, and the location precision is as high as 0.1 pm.