All-fiber mode-locked fiber laser
A fiber laser and all-fiber technology, applied in lasers, laser components, phonon exciters, etc., can solve problems such as uncompact structure, low stability, and low damage threshold, and achieve compact structure, improved damage threshold, and The effect of high damage threshold
Inactive Publication Date: 2020-07-10
CHANGCHUN UNIV OF SCI & TECH
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However, the existing mode-locked fiber laser has a low damage threshold, low stability, and not compact structure
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[0027] Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. According to these detailed descriptions, those skilled in the art can clearly understand the present application and can implement the present application. Without departing from the principle of the present application, the features in different embodiments can be combined to obtain new implementations, or some features in certain embodiments can be replaced to obtain other preferred implementations.
[0028] see Figure 1~6 , the application provides an all-fiber mode-locked fiber laser, including sequentially connected laser emission components 1, wavelength division multiplexers 2, all-fiber saturable absorption components 3, couplers 4, gain fibers 5 and polarization-independent isolators 6 , the polarization-independent isolator 6 is connected to the wavelength division multiplexer 2;
[0029] The all-fiber saturable absorption co...
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Abstract
The invention belongs to the technical field of fiber lasers, and particularly relates to an all-fiber mode-locked fiber laser. An existing mode-locked fiber laser is low in damage threshold value, not high in stability and not compact in structure. The provided all-fiber mode-locked fiber laser comprises a laser emitting assembly, a wavelength division multiplexer, an all-fiber saturable absorption assembly, a coupler, a gain fiber and a polarization independent isolator which are connected in sequence, wherein the polarization independent isolator is connected with the wavelength division multiplexer; and the all-fiber saturable absorption assembly comprises a polarization controller and an optical fiber group, wherein the optical fiber group comprises a single-mode optical fiber, a single-cladding multimode optical fiber and an output single-mode optical fiber which are connected in sequence. Mode locking is achieved through the nonlinear multimode interference effect in the multimode optical fiber, traditional soliton output in the 1.5-micron waveband is obtained, and high-order harmonic mode locking is achieved. The all-fiber mode-locked fiber laser has an all-fiber structure,and is high in damage threshold, high in stability and compact in structure.
Description
technical field [0001] The present application belongs to the technical field of fiber lasers, and in particular relates to an all-fiber mode-locked fiber laser. Background technique [0002] Harmonic is a mathematical or physical concept, which refers to the part of a periodic function or a periodic waveform that can be expressed by a constant, a linear combination of a sine function and a cosine function that have the same minimum positive period as the original function. The 1.5μm harmonic pulsed fiber laser has broad application prospects in the fields of optical communication, material processing, optical frequency comb, biomedicine and nonlinear optics, and is the most active and creative branch of the laser field. Mode-locking is a technique used in optics to generate extremely short-duration laser pulses, usually in the picosecond (10 minus 12th power second) or even femtosecond (10 minus 15th power second) pulse length. The theoretical basis of this technology is t...
Claims
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IPC IPC(8): H01S3/067H01S3/07H01S3/11
CPCH01S3/067H01S3/07H01S3/1106
Inventor 金亮王铁斌徐英添张贺张宏伟潘伟
Owner CHANGCHUN UNIV OF SCI & TECH