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Random laser emitting device with thermo-optic switching characteristic

A random laser and thermo-optic switch technology, applied in the laser field, can solve the problems of complex process and high energy consumption of thermo-optic switches, and achieve the effects of reducing energy consumption, overall reduction and production cost

Inactive Publication Date: 2013-09-25
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of optical transmission, the refractive index of the waveguide is changed by temperature to achieve the purpose of switching, and the switching temperature of the traditional thermo-optical switch is 60°C-80°C, which consumes a lot of energy.
Traditional microstructure thermo-optic switches are mostly made by the following methods: use laser to etch irregular grooves on glass substrates, silicon wafers and semiconductor materials; use PDMS method to make microfluidic structures; use chemical methods, such as dry etching , Wet etching to make microstructures, the process of making thermo-optic switches using the above method is too complicated

Method used

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  • Random laser emitting device with thermo-optic switching characteristic
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  • Random laser emitting device with thermo-optic switching characteristic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: as figure 1 As shown, a random laser emitting device with thermo-optical switch characteristics, including a laser 1 on the same horizontal line, a first convex lens 2, a second convex lens 3, and a reflector 4 arranged at 45° to the horizontal line where the laser 1 is located; the The device also includes a plano-convex cylindrical lens 5, and the plane of the plano-convex cylindrical lens 5 is set at 45° to the reflective surface of the mirror 4. The device also includes a box structure 6 , a converging lens 7 , and a temperature controller 9 . Among them, such as figure 2 As shown, the box structure includes an upper glass piece 61 , a lower glass piece 62 , and a cavity 63 formed by the upper glass piece 61 and the lower glass piece 62 with a height of microns. The cavity 63 is filled with a polymer solution doped with a laser dye by capillary phenomenon, and the filled polymer system has thermo-optic switching characteristics. A sealant 64 for se...

Embodiment 2

[0027] Embodiment 2: as image 3 As shown, a random laser emitting device with thermo-optical switch characteristics, including a laser 1, a first convex lens 2, a second convex lens 3, a plano-convex cylindrical lens 5, and a box structure 6 arranged in sequence on the same vertical line; Wherein, the plane side of the plano-convex cylindrical lens 5 is close to the second convex lens 3 . The device also includes a converging lens 7 and a temperature controller 9; the upper glass sheet 61 of the box structure 6 faces the convex surface of the plano-convex cylindrical lens 5, and the converging lens 7 is horizontally arranged on one side of the thermo-optic switch 6, and the temperature controller 9 Closely attached to the lower glass plate 62 of the box structure 6, a detector 8 is placed on the other side of the converging lens 7 to detect the change of the outgoing spectrum of the random laser. The random laser output device with thermo-optic switching characteristics pass...

Embodiment 3

[0029] Embodiment 3: In this embodiment, the cavity 63 is filled with a high molecular polymer solution doped with a laser dye by capillary phenomenon, and the high molecular polymer solution is a silicon-containing polymer system, including the following components, expressed in mass percent : Silicon oxide 41.9%, polyvinyl alcohol 7%, hydrochloric acid solution 51%, laser dye solution 0.1%; wherein, the concentration of hydrochloric acid solution is 0.01mmol / L, and the concentration of laser dye is 10% -2 mol / L. First, silicon oxide and polyvinyl alcohol are dissolved in hydrochloric acid solution, and then a laser dye is added, where the laser dye is 2,5-diphenyloxazacyclopentadiene, and then vigorously stirred in an ice-water bath for 20-40 minutes, Finally the resulting clear solution is poured into cavity 63 . All the other parts are the same as in Example 1.

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Abstract

The invention discloses a random laser emitting device with a thermo-optic switching characteristic. The random laser emitting device comprises a laser device, a box structure, a light path and a temperature controller, wherein the light path is used for expanding the diameter of a laser beam emitted by the laser device and focusing the laser beam into the box structure, and the temperature controller connected with the box structure. The box structure comprises an upper glass piece, a lower glass piece, and a cavity formed by the upper glass piece and the lower glass piece and with the height of a micron order. High-molecular polymer solutions with doped laser dye are filled in the cavity. Compared with a random laser device, the random laser emitting device with the thermo-optic switching characteristic can achieve a switching function of the laser emitting device under a low temperature; the random laser emitting device does not need additional coupling components, and reduces cost and energy consumption.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a random laser emitting device with thermo-optical switching characteristics. Background technique [0002] In recent years, random lasers have become a hot research field in the international laser community. The random laser radiation originates from the excited disordered medium, and provides optical feedback through the multiple scattering of the radiated light in the medium, so as to obtain a large gain without an external resonant cavity. Due to its special feedback mechanism, random laser has the advantages of specific working wavelength, convenient manufacture, and low cost, and has attracted widespread attention due to its potential applications in document coding, identification of friend or foe, flat panel display, integrated optics, and remote temperature sensing. focus on. In disordered gain systems such as semiconductor and laser crystal powders, dye solutions and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/213H01S3/10
Inventor 叶莉华王叶轩徐淑宏陆锦程吕聪生崔一平
Owner SOUTHEAST UNIV