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Passive mode-locked laser device

A passive mode-locking, laser technology, applied in the field of lasers, can solve the problems of narrow light absorption band, limited application and development of ultra-short pulse lasers, narrow wavelength range, etc.

Active Publication Date: 2015-04-15
HUNAN CREATE SCI & TECH
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  • Abstract
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Problems solved by technology

[0004] However, the light absorption band of the semiconductor material is narrow, and the wavelength range of the selective absorption of light by the semiconductor saturable absorber mirror is narrow, which limits the wavelength range of the mode-locked pulse generated, which greatly limits the application and development of ultrashort pulse lasers.

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  • Passive mode-locked laser device

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Embodiment Construction

[0026] The invention provides a passive mode-locked laser. The graphyne is used as a saturable absorber of a saturable absorber mirror. The light absorption band is wide, and the wavelength range of the output light pulse of the passive mode-locked laser can be widened.

[0027] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] see figure 1 , a passively mode-locked laser provided by an embodiment of the present invention includes a pumping light source 1, a pumping coupling device 2, and a resonant cavity sequentially arranged in the direction of the optical path;

[0029] The resonant cavity includes a light input cavity mirror 4, a gain medium 3, a first saturable absorption mirror 7 and a second saturable absorption mirror 8 that form oscillating light in the resonant cavity; ...

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Abstract

The invention discloses a passive mode-locked laser device which comprises a pumping light source, a pumping coupling device and a resonant cavity which are arranged along a light path in sequence, wherein the resonant cavity comprises a light input cavity mirror, a gain medium as well as a first saturable absorber mirror and a second saturable absorber mirror which form oscillating light in the resonant cavity; the first saturable absorber mirror is a reflective saturable absorber mirror which takes graphdiyne as a saturable absorption body; the second saturable absorber mirror which takes the graphdiyne as the saturable absorption body serves as a light output cavity mirror. According to the laser device, stable oscillation of light beams in the cavity is realized and maintained through the first saturable absorber mirror and the second saturable absorber mirror to obtain a continuous mode-locked pulse; the graphdiyne is taken as the saturable absorption body of the saturable absorber mirror, light can be selectively absorbed within a relatively wide wavelength range due to the light absorption bandwidth of the graphdiyne, and the wavelength range of an output pulse of the passive mode-locked laser device can be extended.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a passive mode-locked laser. Background technique [0002] Ultrashort pulse has excellent time-domain and frequency-domain characteristics, and has been widely concerned since its birth. Its applications have spread across scientific research, industry, military, environment, energy, communication and other fields that are closely related to people's lives, and have profoundly affected human beings. society. [0003] At present, the ideal ultrashort pulse source is a passively mode-locked laser realized by using a semiconductor saturable absorber mirror (Semiconductor Saturable Absorber Mirror, SESAM). A semiconductor saturable absorber mirror (SESAM) combines a semiconductor quantum well and a Bragg emitter mirror to perform saturable absorption and reflection on the oscillating light in the resonator to obtain a mode-locked pulse. [0004] However, the narrow light absorption ...

Claims

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Application Information

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IPC IPC(8): H01S3/098
Inventor 阙正湘张宏立
Owner HUNAN CREATE SCI & TECH
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