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Preparation method of tellurium-ene saturable absorber and high-energy laser application of tellurium-ene saturable absorber

A saturable absorption, high-energy technology, used in the field of lasers, to achieve good environmental stability, significant effects, and low cost.

Inactive Publication Date: 2022-06-24
山东淄特新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, few studies have been reported on the generation of high-energy mode-locked pulses based on tellurene-based saturable absorbers, which have special applications in industrial and scientific research fields.

Method used

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  • Preparation method of tellurium-ene saturable absorber and high-energy laser application of tellurium-ene saturable absorber
  • Preparation method of tellurium-ene saturable absorber and high-energy laser application of tellurium-ene saturable absorber
  • Preparation method of tellurium-ene saturable absorber and high-energy laser application of tellurium-ene saturable absorber

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Effect test

Embodiment 1

[0035] A kind of preparation method of tellurene-based saturable absorber, the concrete steps are as follows:

[0036] Step 1: Peel off the tellurium powder from the bulk tellurium, add it to 50ml of ethanol and soak it for about 48 hours. Then, the tellurene-ethanol solution was sonicated for 8 hours to further prepare the tellurene nanosheet dispersion. The solution was centrifuged at 2000 rpm for 30 minutes to remove the precipitate. At this point, a multi-layer tellurene nanosheet dispersion was successfully prepared;

[0037] Step 2: Mix the tellurene nanosheet dispersion with the 5 wt% polyvinyl alcohol solution in a volume ratio of 1:1. Put the mixed solution into an ultrasonic cleaner for ultrasonic treatment for 6 hours to obtain a uniform tellurene-polyvinyl alcohol solution;

[0038] Step 3: Fix a tapered optical fiber (the length of the tapered area and the diameter of the optical fiber are about 1.6 mm and 18 μm, respectively) on the glass, and apply 120 μl of ...

Embodiment 2

[0041] A mode-locked fiber laser based on a tellurene saturable absorber, the specific scheme is as follows:

[0042] figure 2 Shown is a schematic diagram of the structure of the mode-locked fiber laser of the present invention. The mode-locked fiber laser includes a pump source 1 and a ring resonator, and the ring resonator consists of a wavelength division multiplexer 2, an erbium-doped fiber 3, a polarization controller 4, a polarization independent isolator 5, a single-mode fiber 6, It consists of a saturable absorber 7 , a polarization controller 2 8 and an output coupler 9 .

[0043] Wherein, the pump source 1 is a laser diode, and the center wavelength of the pump source is 976 nm; the wavelength division multiplexer 2 includes a 980 nm input end, a 1550 nm input end and an output end, and the pigtail is an ordinary single-mode fiber; The length of the erbium-doped fiber 3 is 10.3 m; the output coupler 9 includes a 10% output end and a 90% output end, wherein the 10...

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Abstract

The invention discloses a preparation method of a tellurene saturable absorber and high-energy laser application of the tellurene saturable absorber, and relates to the technical field of laser. The saturable absorber is manufactured through a liquid phase stripping method and has the advantages of being low in cost and good in film forming quality. The method comprises the following steps: coating a section of conical optical fiber with a tellurene-polyvinyl alcohol dispersion liquid prepared by a liquid phase stripping method, and drying at constant temperature to form a tellurene-polyvinyl alcohol film as a saturable absorber. The mode-locked fiber laser comprises a pumping source, a wavelength division multiplexer, an erbium-doped fiber, a polarization controller I, a polarization independent isolator, a single-mode fiber, a saturable absorber, a polarization controller II and an output coupler. The tellurene saturable absorber provided by the invention has excellent nonlinear absorption characteristic and high laser damage threshold, and has good environmental stability. The mode-locked fiber laser based on the tellurene saturable absorber successfully realizes high-energy mode-locked pulse output including dissipative solitons and noise-like solitons, and has a great promotion effect on research and development of ultra-fast photonics devices based on tellurene.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a preparation method of a tellurene saturable absorber and high-energy laser application thereof. Background technique [0002] Recently, fiber lasers based on ultrafast saturable absorbers have been extensively studied to generate laser pulses including mode-locking and Q-switching. In particular, saturable absorbers based on 2D materials show great development potential and practicality due to their excellent properties related to 2D materials, such as wide absorption band, ultrafast recovery time, high damage threshold, and low cost. application prospects. Since it was first applied to the generation of ultrafast lasers in 2009, graphene has been widely used as a saturable absorber to generate laser pulses and is regarded as a pathfinder for the study of ultrafast optoelectronic devices based on 2D materials . Since then, inspired by graphene, including transition metal dich...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/11
CPCH01S3/1118
Inventor 张华年鲁成孙硕魏云瑞徐江灏
Owner 山东淄特新材料科技有限公司
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