High-power pulse laser amplifier with high integration level

Abstract

The invention discloses a high-power pulse laser amplifier with a high integration level, which comprises a crystal lath gain module, two sets of roof prism arrays, two sets of tail fiber coupling LDpumping arrays and two corresponding pumping coupling modules, wherein the crystal lath gain module is used for providing gain for laser amplification; the tail fiber coupling LD pumping arrays are used for providing excitation for the crystal lath gain module; the roof prism arrays are located at the two ends of the crystal lath, arranged in the advancing direction of seed laser and used for controlling the path of a laser beam in the crystal lath; the pumping coupling modules are arranged in the advancing direction of a pumping beam and used for shaping the distribution of the pumping lightin the crystal lath; and the tail fiber coupling LD pumping array is composed of a plurality of fiber coupled output semiconductor lasers. The pulse laser amplifier is compact in structure and easy toadjust, and hundreds of watts level high-gain amplification can be achieved for picosecond laser through one gain module.

Description

technical field [0001] The invention relates to the technical field of pulse laser amplifiers, in particular to a highly integrated high-power pulse laser amplifier. Background technique [0002] High-power ultrafast lasers have the characteristics of controllable pulse width, adjustable repetition frequency, and high pulse energy. They are widely used in biomedicine, optical parametric oscillation, and biological microscopic imaging. An increasingly important tool in the system. [0003] However, whether it is a fiber laser, a semiconductor laser or a solid-state laser, the power to directly generate ultrafast pulse laser is relatively limited. In many applications, a suitable laser amplifier must be used to amplify the pulse seed source to meet actual needs. [0004] The existing high-power pulsed laser amplifiers are complicated to adjust, are not easy to adjust, and consume a lot of time. At the same time, it is impossible to use a gain module to achieve hundreds of wat...

AI Technical Summary

Problems solved by technology

[0007] (1) The seed light travels through the zigzag optical path in the x-z plane, and in the y-z plane, the seed laser beam reflected by the roof prism is confined to the slab and the next row of double-ended coupled pump light in the pump light array On the same optical axis, the pump beam is injected from the two bottom surfaces of the crystal slab near the end surface, and after being reflected by the slopes at both ends, multiple gain regions are formed in the slab to solve the problem that one gain module cannot be used in the prior art to achieve high The problem of gain amplification;

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