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Semiconductor laser seed pulse principal oscillation magnifying full-fiber laser

A fiber laser and fiber amplifier technology, applied in the field of lasers, can solve the problems of large volume and poor stability, and achieve the effect of small volume, stable performance and reduced volume

Inactive Publication Date: 2007-12-05
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The purpose of the present invention is to provide a semiconductor laser seed pulse main oscillation amplification all-fiber laser, which solves the technical problems of large volume and poor stability in the background technology

Method used

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  • Semiconductor laser seed pulse principal oscillation magnifying full-fiber laser

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Embodiment Construction

[0025] The present invention uses a semiconductor laser coupled with an optical fiber as a seed light source, adopts an electrical modulation method to obtain a laser pulse output, the laser pulse width is adjustable, and the repetition frequency is adjustable. According to laser parameters, different lasers are selected and loaded with different modulations to obtain different Laser pulse output for wavelength, pulse width, repetition rate and single pulse energy.

[0026] Referring to FIG. 1 , the present invention mainly consists of a seed optical system 100 and a fiber amplifier 200 . The seed optical system 100 uses a semiconductor seed pulse laser, and the fiber amplifier 200 uses a doped fiber 203 as a gain medium for laser amplification. In order to prevent the return light of the optical fiber amplifier 200 from interfering with or damaging the seed optical system 100 , the seed optical system 100 and the optical fiber amplifier 200 are connected and isolated by a fib...

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Abstract

The invention relates to a laser of semiconductor laser seed pulse principal oscillation enlarge entire optical fiber, the output of the seed light system connects to the optical fiber amplifier with the optical fiber isolator. The seed light system includes the signal mixer, the bias current supply and the modulation supply oscillator which meets the signal mixer input end, the semiconductor laser chip which meets the signal mixer out-port, the out-port of semiconductor laser chip constitutes the out-port of the seed light system. The optical fiber amplifier includes the optical fiber optical coupler, the semiconductor laser which meets the input end of the optical fiber optical coupler, the doping optical fiber which meets the out-port of the optical fiber optical coupler, the another end of the dopes optical fiber constitutes the out-port of the optical fiber amplifier. The input end of optical fiber optical coupler constitutes the input end of the optical fiber amplifier. The invention has solved the technical question of big volume, bad stability in the background technology. The invention has used the entire optical fiber structure, the frequency of the output laser is adjustable, the pulse width is adjustable.

Description

technical field [0001] The invention relates to a laser, in particular to a semiconductor laser seed pulse main oscillation amplified all-fiber laser. Background technique [0002] High-energy short-pulse lasers have a wide range of applications in communications, laser ranging, industrial processing, imaging, lidar, and medicine. At present, there are three main technologies for obtaining high-energy short-pulse lasers: mode-locking, Q-switching, and seed injection amplification. [0003] Mode-locked and Q-switched lasers are bulky and have poor environmental tolerance. Especially for mode-locked lasers, very slight environmental changes may lose the lock. [0004] Seed-injected lasers also have the above-mentioned disadvantages because most of the seed light sources are low-energy mode-locked or Q-switched lasers. The amplifier part of the seed injection laser generally uses crystal rods or doped glass as the gain medium, which has a complex structure, low integration, ...

Claims

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Application Information

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IPC IPC(8): H01S3/00H01S5/00G02B6/00
Inventor 赵卫高存孝朱少岚王屹山陈国夫
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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