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End-pumped 1.34 [mu] m and 0.9 [mu] m dual wavelength mode-locked laser based on transition metal chalcogenide as absorber

A mode-locked laser, transition metal technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of inability to obtain wide-spaced dual-wavelength mode-locked laser output and narrow modulation bandwidth.

Inactive Publication Date: 2020-08-11
华芯科技(天津)有限公司
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Problems solved by technology

[0004] In order to solve the problem that the modulation bandwidth of the traditional passive mode-locking element is narrow, and the wide-spaced dual-wavelength mode-locked laser output cannot be obtained with a traditional passive mode-locked element, the research on the dual-wavelength laser output based on a new broadband saturable absorber is very important.

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  • End-pumped 1.34 [mu] m and 0.9 [mu] m dual wavelength mode-locked laser based on transition metal chalcogenide as absorber

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0021] see figure 1 As shown, the present invention provides an end-pumped 1.34 μm and 0.9 μm dual-wavelength mode-locked laser based on a transition metal sulfide as a saturable absorber, including:

[0022] -The wavelength of the fiber-coupled semiconductor laser (1) includes 808nm and 880nm, the fiber core diameter includes but not limited to 200μm, 400μm, 600μm, 800μm, and the fiber numerical aperture includes but not limited to 0.16 and 0.22.

[0023] - The optical coupling system (2) is composed of lens groups with different focal lengths, and is used to focus the pump light emitted by the fiber-coupled semiconductor laser (1) into the laser crystal (3).

[0024] -Laser crystals (3) including but not limited to Nd:...

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Abstract

The invention discloses a 1.34 mu m and 0.9 mu m dual-wavelength mode-locked laser with an end pump based on a transition metal chalcogenide as an absorber. The laser comprises an optical fiber coupled semiconductor laser, an optical coupling system, a laser crystal, a resonant cavity output mirror, a coupling mirror, a concave surface total reflection mirror I, a concave surface total reflectionmirror II, a saturable absorber of transition metal chalcogenide based on the transition metal chalcogenide, and a resonant cavity total reflection mirror. A traditional saturable absorber is narrow in bandwidth, and wide-interval dual-wavelength mode-locked laser output is difficult to achieve at the same time through one traditional saturable absorber. As the saturable absorber based on the novel two-dimensional material-transition metal chalcogenide has a wide saturable absorption bandwidth, 1.34 [mu] m and 0.9 [mu] m dual-wavelength mode-locked laser operation can be realized.

Description

technical field [0001] The invention relates to a dual-wavelength laser, in particular to an end-pumped 1.34 μm and 0.9 μm dual-wavelength mode-locked laser based on a transition group metal sulfide as a saturable absorber. Background technique [0002] Widely spaced dual-wavelength mode-locked lasers have very important application value in the fields of optical communication, lidar, and nonlinear optics. In addition, due to the large wavelength span of lasers, which cover complex photon information, they are widely used in the fields of physics, chemistry, and life sciences. It has a very important application prospect in the study of ultrafast dynamics. There are two methods for realizing dual-wavelength mode-locked lasers: active mode-locking and passive mode-locking. Active mode-locking usually requires an acousto-optic or electro-optic modulator, making the laser complex and thus difficult to miniaturize. Compared with active solutions, passive mode-locking has more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/11H01S3/094H01S3/16H01S3/081
CPCH01S3/0816H01S3/094053H01S3/1118H01S3/1611H01S3/1673
Inventor 杨亮姜中元
Owner 华芯科技(天津)有限公司
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