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All-fiber structure high-energy rectangular laser pulse generation system and method

A technology of laser pulses and rectangular pulses, applied in the field of lasers, can solve problems such as the difficulty of directly outputting high-energy pulses, and achieve the effects of insensitivity to environmental disturbances, high conversion efficiency, and mature preparation processes

Active Publication Date: 2017-05-24
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0010] The purpose of the present invention is to solve the problem that it is difficult to directly output high-energy pulses in existing fiber lasers, and propose a system and method for generating high-energy rectangular laser pulses with an all-fiber structure

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  • All-fiber structure high-energy rectangular laser pulse generation system and method
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  • All-fiber structure high-energy rectangular laser pulse generation system and method

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Embodiment Construction

[0045] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0046] The invention provides a high-energy rectangular laser pulse generation system with an all-fiber structure, such as figure 1 As shown, it includes a pump source 1, a wavelength division multiplexer 2, an ytterbium-doped gain fiber 3, a novel saturable absorber 4, a polarization-independent isolator 5, an output coupler 6 and a polarization controller 7. A wavelength division multiplexer 2, an ytterbium-doped gain fiber 3, a new saturable absorber 4, a polarization-independent isolator 5, an output coupler 6, and a polarization controller 7 are sequentially connected through a single-mode fiber 8 in a closed loop. The pump source 1 is connected to the input end of the wavelength division multiplexer 2, and the output end of the output coupler 6 outputs a rectangular pulse.

[0047] Wherein, the pumping source 1 is a semiconductor laser or a fiber ...

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Abstract

The invention discloses an all-fiber structure high-energy rectangular laser pulse generation system and method and is to solve the technical problem that it is hard for an existing fiber laser to realize high-energy rectangular laser pulse output. The system comprises a pump source (1), a wavelength division multiplexer (2), an ytterbium-doped gain fiber (3), a novel saturable absorber (4), a polarization independent isolator (5), an output coupler (6) and a polarization controller (7), which are connected in sequence through single-mode fibers (1). The system has the advantages of simple structure, low cost and good stability and the like, can be directly used as picosecond and nanosecond pulse light sources and can also be used as a seed resource of a high-energy pulse amplifier. The provided high-energy rectangular laser pulse generation method has a very important guidance significance for design of the novel saturable absorber meeting specific requirements.

Description

technical field [0001] The invention belongs to the field of laser technology, and in particular relates to the design of a high-energy rectangular laser pulse generation system and method with an all-fiber structure. Background technique [0002] High-energy ultrashort pulse fiber lasers have important applications in the fields of communication, sensing, precision machining, material processing, biomedicine, and national defense and military. Generally, mode-locking technology is used to obtain ultra-short pulses (pulse width is on the order of picoseconds or femtoseconds), and mode-locking technology can be mainly divided into two types: active mode-locking and passive mode-locking. Compared with active mode-locking, passive mode-locking technology has become a research hotspot and has important application value because it does not require additional modulators, has the advantages of simple and compact structure, and is easy to realize all-fiber conversion. [0003] The...

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Application Information

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IPC IPC(8): H01S3/10H01S3/11H01S3/067
CPCH01S3/06754H01S3/10007H01S3/1115
Inventor 杜文雄李和平申圣男张旨遥张尚剑刘永
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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