High-performance chalcogenide glass microsphere and preparation method thereof

A chalcogenide glass, high-performance technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of unstable optical properties, low preparation efficiency, and low transmission power of chalcogenide glass microspheres, and achieve anti- The effect of high laser damage threshold, simple preparation process and high laser power

Active Publication Date: 2014-03-05
NANJING WAVELENGTH OPTO ELECTRONICS SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a high-performance chalcogenide glass microsphere and its preparation method to solve the problems of unstable optical properties, low transmission power and low preparation efficiency of commonly used chalcogenide glass microspheres

Method used

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  • High-performance chalcogenide glass microsphere and preparation method thereof
  • High-performance chalcogenide glass microsphere and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: the composition of chalcogenide glass microspheres is Ge 8 As 32 S 60 ;

[0020] will be composed as Ge 8 As 32 S 60 1. Polish the surface of a chalcogenide glass rod with a diameter of 8mm, and then use a polyethersulfone resin PES film with a thickness of 125μm to wrap the glass rod tightly to a diameter of 25mm, put it in a vacuum furnace, evacuate to below 1Pa, and heat up to 240 o C, and keep it warm for 30 minutes to make the PES cladding dense, and then cool to room temperature; draw the obtained composite optical fiber preform with PES cladding on an optical fiber drawing tower into a thin rod with a diameter of 3 mm (the glass core diameter is about 1 mm); Cut out a thin rod with a length of 150mm, and use a PES film with a thickness of 75μm to rewind the thin rod to a diameter of 25mm, put it in a vacuum furnace, evacuate to below 1Pa, and slowly heat up to 240 o C, and keep it warm for 30 minutes to make the PES cladding dense, and then co...

Embodiment 2

[0023] Embodiment 2: the composition of chalcogenide glass microspheres is Ge 10 As 24 S 66 ;

[0024] will be composed as Ge 10 As 24 S 66 1. Polish the surface of a chalcogenide glass rod with a diameter of 6mm, then use polyetherimide PEI with a thickness of 75μm to roll the glass rod tightly to a diameter of 25mm, put it in a vacuum furnace, evacuate to below 1Pa, and heat up to 245 o C, and keep it warm for 20 minutes to make the PEI cladding dense, and then cool to room temperature; draw the obtained composite optical fiber preform with PEI cladding on an optical fiber drawing tower into a thin rod with a diameter of 2 mm (the glass core diameter is about 500 μm); Cut thin rods with a length of 150mm, stack 7 thin rods to form a multi-core structure with a diameter of 6mm, roll up the multi-core structure with a PEI film with a thickness of 75μm to a diameter of 25mm, put it in a vacuum furnace, and evacuate to 1Pa Below, slowly heat up to 245 o C, and keep it war...

Embodiment 3

[0027] Embodiment 3: the composition of chalcogenide glass microspheres is Ge 12 As 20 S 68 ;

[0028] will be composed as Ge 12 As 20 S 68 1. Polish the surface of a chalcogenide glass rod with a diameter of 8mm, then use polyethersulfone resin PES with a thickness of 125μm to wrap the glass rod tightly to a diameter of 25mm, put it in a vacuum furnace, evacuate to below 1Pa, and heat up to 250 o C, and keep it warm for 10 minutes to make the PES cladding dense, and then cool to room temperature; draw the obtained optical fiber preform with PES cladding on a fiber drawing tower into an optical fiber with a diameter of 900 μm (the core diameter of the optical fiber is about 300 μm); Put the composite optical fiber with PES cladding into the quartz tube furnace and heat it to 350 o C, keep warm for 10 minutes, the glass in the fiber polymer cladding will break and form a large number of microspheres with uniform size; put the heat-treated fiber into 100ml N,N-dimethylacet...

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Abstract

The invention discloses a high-performance chalcogenide glass microsphere and a preparation method thereof, wherein the glass microsphere belongs to an optical microsphere and an infrared sensing material. The chemical composition of the glass microsphere is GexAsyS100-x-y, wherein x is greater than or equal to 8 and smaller than or equal to 12, while y is greater than or equal to 20 and smaller than or equal to 32. The glass microsphere is obtained by means of heat treating 'chalcogenide glass/polymer' composite optical fibers, and the composite optical fibers are obtained by means of drawing 'chalcogenide glass/polymer' preform rods on an optical fiber drawing tower. The chalcogenide glass microsphere prepared by the method has a diameter of 8-300 micrometers, an eccentricity degree smaller than or equal to 1%, surface smoothness smaller than or equal to 1nm, a microcavity quality factor Q greater than or equal to 1x10<5> and a laser induced damage threshold greater than or equal to 400GW/cm<2>(5.3micrometers, 150fs and 1kHz). The chalcogenide glass microsphere can be applied to the fields of molecular sensing and infrared optics. The chalcogenide glass microsphere and the preparation method have the following advantages that 1. the photon-induced refractive index change of glass is extremely small and the optical stability is good; 2. the laser induced damage resisting threshold of the glass microsphere is relatively high and the glass microsphere serving as an optical microcavity is capable of transmitting relatively high laser power; 3. the preparation technology is simple, the cost is very low and a large number of high-quality microspheres with uniform size can be prepared at a time.

Description

technical field [0001] The invention relates to an optical microsphere and a preparation method, in particular to a high-performance chalcogenide glass microsphere and a preparation method. Background technique [0002] An optical microcavity is an optical resonant cavity with a size on the order of micron or submicron. Area. In optical microcavities (microrings, microdisks, microspheres, photonic crystals), spherical cavities have the best ability to limit light circulation in the cavity, and can have extremely high quality factors (Q) and extremely small mode volumes. Many research and application fields such as high-sensitivity sensors, narrow-band optical filtering, extremely low-threshold lasers, nonlinear optics, and cavity quantum electrodynamics have broad application prospects. [0003] At present, optical microcavity technology is mainly limited to the visible and near-infrared regions, and there are few reports on resonant microcavities working in the mid-infrar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00C03B19/10
Inventor 杨志勇任和杨安平张斌陶海征王荣平张鸣杰郭威杨艳唐定远
Owner NANJING WAVELENGTH OPTO ELECTRONICS SCI & TECH CO LTD
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