A mid-infrared all-fiber laser with multiple wavelengths and repetition frequency controllable

Abstract

The invention discloses a mid-infrared all-fiber laser with the same repetition frequency and controllable repetition frequency of multiple wavelengths, including 1 The second resonant cavity that outputs light at a wavelength that produces λ 2 wavelength output light from the third resonator and produces λ 3 and lambda 1 A fourth resonant cavity for outputting light at a wavelength; the third resonant cavity is located in the second resonant cavity, and the λ produced by the third resonant cavity 2 wavelength output light and the λ produced by the second resonator 1 The wavelength output light is mutually modulated; the fourth resonant cavity is located in the second resonant cavity, and the λ generated by the fourth resonant cavity 3 wavelength output light and λ 1 The wavelengths of output light are intermodulated.

Description

technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a mid-infrared all-fiber laser with multiple wavelengths and the same repetition frequency and controllable repetition frequency. Background technique [0002] The 3-8μm mid-infrared pulsed fiber laser source has important applications in military and civilian applications such as laser medical treatment, laser spectroscopy, material processing, pumping source for generating mid-infrared supercontinuum, and infrared countermeasures. [0003] At present, the most commonly used method to generate mid-infrared fiber laser is to use rare earth ion doped fiber as the gain medium to directly realize the radiation of mid-infrared laser. In recent years, the improvement of fiber drawing technology and the maturity of related fiber optic components have led to the rapid development of mid-infrared fiber lasers. However, there are relatively few reports in the mid-infrared band with w...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a mid-infrared all-fiber laser with multiple wavelengths and the same repetition frequency and controllable repetition frequency, and solve the problem that it is difficult for a single fiber laser to simultaneously generate multiple wavelengths with the same repetition frequency at 3 to 8 μm. The pulsed laser output and solve the current multi-wavelength pulse laser output with the same repetition frequency needs to combine multiple independent fiber lasers, which greatly increases the complexity of the system

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