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Preparation method of saturable absorber and fiber laser

A saturable absorption, fiber laser technology, used in the preparation of saturable absorbers, saturable absorbers and laser fields, can solve the problem of easy deterioration of saturable absorber performance, affecting the stability of pulsed lasers, unfavorable for ultra-short pulses, etc. problems, to achieve the effect of reducing application costs, stabilizing laser output, and making simple

Active Publication Date: 2021-07-30
JILIN TEACHERS INST OF ENG & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Two-dimensional materials such as graphene and black phosphorus have a size of hundreds of nanometers, poor dispersion in solution, easy to deteriorate the performance of saturable absorbers, and affect the stability of pulsed lasers
Moreover, the modulation depth of graphene saturable absorbers is relatively low, which is not conducive to the realization of ultrashort pulses

Method used

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  • Preparation method of saturable absorber and fiber laser
  • Preparation method of saturable absorber and fiber laser
  • Preparation method of saturable absorber and fiber laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Add 0.2 parts of tungsten chloride to 40 parts of absolute ethanol and mix evenly to obtain a bright yellow mixed solution; then add 0.05 parts of cesium hydroxide to the aqueous tungsten chloride solution and stir evenly. Next, 10 parts of acetic acid solution was added to obtain a precursor solution, and the precursor solution was placed in a high-temperature reaction kettle at a temperature of 240° C. for 20 hours to obtain a cesium-doped tungsten oxide nanorod solution.

[0086] Put 8 mL of the above-mentioned cesium-doped oxide nanorod solution into a centrifuge test tube, and centrifuge at a speed of 10,000 rpm for 10 minutes; remove the upper layer solution, and use deionized water to disperse the precipitate to obtain cesium-doped tungsten oxide nanorods of 50nm to 70nm .

[0087] Mix 0.05 parts of cesium-doped tungsten oxide nanorods, 8 parts of film-forming agent and 1000 parts of water to form a mixed solution, place the mixed solution in an ultrasonic machin...

Embodiment 2

[0100] Add 0.25 parts of tungsten chloride to 40 parts of absolute ethanol and mix evenly to obtain a bright yellow mixed solution; then add 0.06 parts of cesium hydroxide to the aqueous tungsten chloride solution and stir evenly. Next, 10 parts of acetic acid solution was added to obtain a precursor solution, and the precursor solution was placed in a high-temperature reaction kettle at a temperature of 240° C. for 20 hours to obtain a cesium-doped tungsten oxide nanorod solution.

[0101] Put 8 mL of the above-mentioned cesium-doped oxide nanorod solution into a centrifuge test tube, and centrifuge at a speed of 10,000 rpm for 10 minutes; remove the upper layer solution, and use deionized water to disperse the precipitate to obtain cesium-doped tungsten oxide nanorods of 50nm to 70nm .

[0102] Mix 0.1 part of cesium-doped tungsten oxide nanorods, 7 parts of film-forming agent and 1000 parts of water to form a mixed solution, place the mixed solution in an ultrasonic machine...

Embodiment 3

[0115] Add 0.29 parts of tungsten chloride to 40 parts of absolute ethanol and mix evenly to obtain a bright yellow mixed solution; then add 0.065 parts of cesium hydroxide to the aqueous tungsten chloride solution and stir evenly. Next, 10 parts of acetic acid solution was added to obtain a precursor solution, and the precursor solution was placed in a high-temperature reaction kettle at a temperature of 240° C. for 20 hours to obtain a cesium-doped tungsten oxide nanorod solution.

[0116] Put 8 mL of the above-mentioned cesium-doped oxide nanorod solution into a centrifuge test tube, and centrifuge at a speed of 10,000 rpm for 10 minutes; remove the upper layer solution, and use deionized water to disperse the precipitate to obtain cesium-doped tungsten oxide nanorods of 50nm to 70nm .

[0117] Mix 0.2 parts of cesium-doped tungsten oxide nanorods, 8 parts of film-forming agent and 1000 parts of water to form a mixed solution, place the mixed solution in an ultrasonic machi...

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Abstract

The invention discloses a preparation method of a saturable absorber. The preparation method comprises the following steps: mixing cesium-doped tungsten oxide nanorods, a film-forming agent and water to form a mixed solution; performing ultrasonic dispersion on the mixed solution by an ultrasonic machine to form a suspension; and coating the suspension on the surface of glass, and drying to obtain the saturable absorber of the cesium-doped tungsten oxide nanorod. The cesium-doped tungsten oxide nanorod and the film-forming agent are used as raw materials to prepare the saturable absorber, the method is simple, and the universality is high. In addition, the invention further discloses a pulse fiber laser using the saturable absorber, possibility is provided for performance optimization of the pulse fiber laser and implementation of an infrared pulse fiber laser in a longer wave band, and application cost can be greatly reduced.

Description

technical field [0001] The invention relates to the field of pulsed lasers, in particular to a preparation method of a saturable absorber, a saturable absorber and a laser. Background technique [0002] Fiber laser has always been a hot research object in the laser field, especially pulsed fiber laser, which not only has high peak power, large pulse energy, and pulse width up to femtosecond level, but also has high integration, good beam quality, The outstanding features such as easy maintenance make it widely used in industrial processing, laser communication, biomedicine, scientific research, military and other fields. The needs of practical applications require the development of miniaturization, multi-wavelength, functionalization of core devices and low cost of pulsed fiber lasers. Therefore, the continuous updating of pulsed fiber laser related technologies and continuous optimization of performance has always been a research hotspot in the field. [0003] Q-switchin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/106H01S3/108H01S3/136H01S3/067
CPCH01S3/067H01S3/1061H01S3/136H01S3/108
Inventor 李楠宋立军王爱军张文颖郭明
Owner JILIN TEACHERS INST OF ENG & TECH
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