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Homo-light-beam double-wavelength double-pulse laser generating method

A generation method and double-pulse technology, applied in the laser field, can solve problems such as inconvenient use of differential absorption lidar

Inactive Publication Date: 2003-08-13
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

The title "Double-Pulse Dual-Wavelength Laser with Prism Beam Splitter" proposed by the University of Science and Technology of China in March 1999 also means that the pulse beams with the same propagation direction but different wavelengths are separated in space, which is not convenient for differential absorption. The use of lidar, for the same flash lamp pumping, outputting dual-wavelength dual-Q-switched pulse tunable lasers in the same beam has not been reported

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  • Homo-light-beam double-wavelength double-pulse laser generating method

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[0015] See Figures 1 and 2. 1. Front cavity mirror, 2. Laser crystal, 3. Electro-optic switch, 4, 5. Tuning element, 6, 7. Rear cavity mirror, 8. Flash lamp, 9. Polarizer, 10. Q-switching crystal, 11 1. Polarizing beam splitter, 12. Electronic control system of Q-switched crystal, A direction and B direction are respectively the beam transmission directions after splitting whose polarization directions are perpendicular to each other.

[0016] A method for generating double-wavelength double-pulse laser with the same beam of the present invention, using a flash lamp 8 to pump a tunable laser crystal 2, using a polarizer 9, a crystal 10 with a Q-switching function, and a polarizing beam splitter 11 (such as a thin film polarizer) The electro-optic switcher 3 composed, in the time of one pumping pulse, makes the laser flow in the front cavity mirror 1, the laser crystal 2, the electro-optic switcher 3, two sets of tuning elements 4 and 5 and the rear cavity mirrors 6 and 7. The...

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Abstract

A method for generating same-beam dual-wavelength dual-pulse laser uses a tunable laser crystal suitable for flash-lamp pump to obtain Q-regulating pulse output, and can be used for pollution measuring radar, holographic molecular fluorescence diagnosis, satellite range finding, etc. A photoelectric switch device is used to make the laser oscillate sequentially in the sub-cavities of two channels during a pump pulse. As their oscillating wavelengthes are different, there is dual-wavelength dual-pulse output.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a method for generating double-wavelength double-pulse laser. Background technique [0002] In January 1995, a paper entitled "3-D Air Pollution Monitoring of Vehicle-mounted Full-Solid Laser Radar System" was published in the special collection of "Optics and Optoelectronics News" in Germany (J.P.wolf, "3-Dminitoring of air pollution using mobile All-Solid-State lidar system", optics photonics news, Jan, 1995, P27), which discloses a method of using a prism with parallel surfaces to rotate to realize two wavelength switching methods, and is used in differential absorption pollution measurement systems . In 1992, the Langley Research Center of the National Aeronautics and Space Administration of the United States published an article entitled "Characteristics of Nd: YAG Double Pulse Laser System" (J.A.Williams-Byrd et al NASA Langley Research Center HamptonVirginia 23665; C, Ban...

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Application Information

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IPC IPC(8): H01S3/00H01S3/127H01S3/16
Inventor 陈长水
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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