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Ultra-short pulse fiber laser seed source system based on single chip microcomputer feedback regulation

A technology of fiber lasers and ultrashort pulses, which is applied to lasers, laser components, phonon exciters, etc., and can solve problems such as increased resonant cavity loss, damage, and seed sources that cannot be turned on and started automatically

Pending Publication Date: 2019-02-19
光越科技(深圳)有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] In the passive mode-locked ultrashort pulse fiber laser seed source using a saturable absorber, such as a semiconductor saturable absorber SESAM, when the seed source is used, it can quickly self-start and enter the mode-locked state to output an ultrashort pulse laser signal, but Continuous use of the seed source for a long time will cause slight damage to the SESAM chip, the key component of the mode-locking, resulting in an increase in the loss of the entire resonator, and the seed source cannot be turned on and enters the mode-locked state; in addition, the ultra-short pulse fiber laser seed source Other passive components will also be slightly damaged after long-term continuous operation, which will increase the loss of the resonant cavity, causing the seed source to fail to start and enter the mode-locked state

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  • Ultra-short pulse fiber laser seed source system based on single chip microcomputer feedback regulation

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Embodiment Construction

[0019] The invention will be further described in detail according to specific embodiments and accompanying drawings.

[0020] A kind of ultra-short pulse fiber laser seed source system based on single-chip microcomputer feedback adjustment of the present invention includes doped gain fiber 4, fiber collimator 6, reflective wavelength division multiplexer 5, saturable absorber 7 or called reflective Semiconductor saturable absorber mirror SESAM, semiconductor saturable absorber mirror, large splitting ratio output optical coupler 2, optical isolator 1 or output optical isolator, chirped fiber Bragg grating 3, semiconductor pump laser 11, pump laser drive circuit 10 or constant current drive circuit, single-chip microcomputer control circuit 9, photoelectric receiving diode and its amplifying circuit 8.

[0021] The output transmission percentage of the chirped fiber Bragg grating 3 of the present invention needs to match the length of the doped gain fiber 4 to obtain a stable ...

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Abstract

The invention aims to provide an ultra-short pulse fiber laser seed source system based on single chip microcomputer feedback regulation. The system mainly comprises a pumping drive circuit, a singlechip microcomputer control circuit, a photoelectric receiving diode, a photoelectric receiving diode amplifying circuit, a single-mode semiconductor pumping laser, a mode-locked device, a fiber collimator, a wavelength division multiplexer, a gain fiber, a chirped fiber Bragg grating and an output light isolator. The mode-locked self-stating capability of an ultra-short pulse fiber laser can be effectively improved based on single chip microcomputer feedback regulation, the service lives of seed sources are effectively prolonged, and the application range of the system is widened in the fieldsof fine laser machining, fiber sensing measurement and the like.

Description

Technical field: [0001] The invention relates to a laser seed source in the field of laser technology, in particular to an ultrashort pulse fiber laser seed source system based on single-chip microcomputer feedback regulation. Background technique: [0002] Lasers play an increasingly important role in people's modern work and life, and have great economic value and social benefits. The ultrashort pulse fiber laser seed source can obtain high-power ultrashort pulse laser output through the master oscillator poweramplifier (MOPA, master oscillator poweramplifier) ​​method. This ultrashort pulse has good beam quality, compact structure and very high peak power, and is widely used It is used in materials processing, biomedicine, supercontinuum generation and remote sensing measurement and other fields. In the high power ultrashort pulse fiber laser system, the seed source is its core component. The implementation methods of the pulse seed source mainly include gain switching ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/11H01S3/13H01S3/0941H01S3/102
CPCH01S3/0941H01S3/1022H01S3/1106H01S3/1305
Inventor 袁易君龙跃金张剑宇曾文康杨武
Owner 光越科技(深圳)有限公司