Novel equivalent dual-band mid-infrared pulsed laser with the same threshold and laser output method

A pulsed laser, dual-band technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problem of lack of dual-wavelength continuous laser synchronous threshold output, achieve large carrier carrying capacity, simplify system, operation simple effect

Active Publication Date: 2020-12-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is: in order to solve the problem that the wavelengths of the passive Q-switched pulsed mid-infrared lasers based on new two-dimensional materials are mainly at ~3 microns and ~3.5 microns, and the synchronization of dual-wavelength continuous lasers at ~3 microns and ~2.1 microns is lacking. For the problem of threshold output, the present invention provides a novel equivalent dual-band mid-infrared pulsed laser with the same threshold and a laser output method

Method used

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  • Novel equivalent dual-band mid-infrared pulsed laser with the same threshold and laser output method
  • Novel equivalent dual-band mid-infrared pulsed laser with the same threshold and laser output method
  • Novel equivalent dual-band mid-infrared pulsed laser with the same threshold and laser output method

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Embodiment 1

[0041] Such as figure 1 As shown, this embodiment provides a new type of equivalent threshold-value dual-band mid-infrared pulsed laser, including a 1150nmLD pump source 1, a first dichromatic mirror 3, a second dichromatic mirror 4, and a second dichromatic mirror 4 arranged in sequence along the horizontal direction. A focusing lens 5, a double-clad holmium-doped fluoride gain fiber 6, a first collimating mirror 7 and a gold-plated mirror 8 also include a 1950nmLD pumping source 2 arranged above the first dichromatic mirror 3, the first Both the dichroic mirror 3 and the second dichroic mirror 4 are installed obliquely, and the specific inclination angle is determined according to the actual situation. The angle is an 8° oblique angle,

[0042] Wherein, the 1150nmLD pumping source 1 is used to generate the continuous pumping laser A; the 1950nmLD pumping source 2 is used to generate the continuous pumping laser B; the first dichromatic mirror 3 is highly transparent to the...

Embodiment 2

[0054] This embodiment is further optimized on the basis of Embodiment 1, specifically:

[0055] A second focusing lens 8, an antimonene two-dimensional saturable absorbing material 9 and a second collimating mirror 10 are arranged in sequence along the horizontal direction between the first collimating mirror 7 and the gold-plated mirror 11. The second focusing The lens 8 is used to focus the ~3 micron and ~2.1 micron lasers, and lases onto the antimonene two-dimensional saturable absorbing material 9; the antimonene two-dimensional saturable absorbing material 9 performs a Passive Q-switching; the second collimating mirror 10 collimates the ~3 micron and ~2.1 micron lasers again and incidents them on the gold-plated mirror 11, and the antimonene two-dimensional saturable absorbing material is prepared by the liquid phase exfoliation method, and deposited on CaF 2 The base is low.

[0056] Place the second focusing lens 8, the antimonene two-dimensional saturable absorbing ...

Embodiment 3

[0058] This embodiment is further optimized on the basis of Embodiment 2, specifically:

[0059] Measure the power of ~3 micron and ~2.1 micron pulsed lasers respectively from behind the second dichroic mirror 4, and calculate the slope efficiency respectively, and adjust the power ratio of the 1150nmLD pump source and the 1950nmLD pump source to meet the conditions in Example 1, And the difference between the calculated two-slope efficiencies fluctuates below 2%, so as to realize synchronous and equal-efficiency output of ~3 micron and ~2.1 micron dual-wavelength pulsed lasers.

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Abstract

The present invention discloses a novel same-threshold equivalent dual-band mid-infrared pulsed laser and a laser output method, and relates to the technical field of mid-infrared lasers. The present invention includes a 1150nmLD pump source and a first dichroic mirror arranged in sequence along the horizontal direction. , a second dichroic mirror, a first focusing lens, a double-clad holmium-doped fluoride gain fiber, a first collimating mirror and a gold-plated mirror, and a 1950nmLD pump source arranged above the first dichroic mirror, the first Between the collimating mirror and the gold-plated reflector, a second focusing lens, an antimonene two-dimensional saturable absorbing material, and a second collimating mirror are sequentially arranged along the horizontal direction. The present invention can achieve ~3 microns and ~2.1 microns with the same threshold The output of the dual-band continuous laser, and by adjusting the power ratio of the 1150nmLD pump source and the 1950nmLD pump source, can realize the simultaneous output of ~3 micron and ~2.1 micron dual-wavelength pulsed laser, which can be widely used in multi-material Processing, medical surgery and other fields.

Description

technical field [0001] The invention relates to the technical field of mid- and near-infrared lasers, and more specifically relates to a novel equal-threshold equivalent dual-band mid-infrared pulse laser and a laser output method. Background technique [0002] With the continuous development of fiber laser technology, mid-infrared pulsed fiber laser has gradually attracted the attention of many scholars at home and abroad. Its potential applications mainly include military defense, laser minimally invasive surgery, mid-infrared spectroscopy, long-wave mid-infrared pump source, etc. . Due to the continuous maturity of commercial products of high-power semiconductor lasers, erbium-doped and holmium-doped fluoride fiber lasers with diode pump sources are the best in achieving high-energy and high-peak-power mid-infrared laser pulses. Generally speaking, there are two ways to realize this pulsed laser chain, namely, Q-switching and mode-locking. Among them, the mode-locked fib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/094H01S3/113
CPCH01S3/094042H01S3/094096H01S3/113
Inventor 李剑峰石逸文罗鸿禹李昆徐瑶赖宸东杨剑刘永
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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