High power pulsed laser maladjustment proof resonant cavity

Abstract

This invention discloses one high power impulse laser anti-lose resonance chamber, which comprises total reflection lens, plane output lens and laser work medium, wherein, the total reflection lens is composed of right angle inner and outer tamper surfaces; the reflection lens is combination of right angle outer tamper reflection lens and right angle round inside surface; these two reflection lens center axis are overlapped with height of outer round tamper larger than that of inner round reflection lens for around 2mm.

Description

technical field [0001] The invention relates to a laser resonant cavity. Background technique [0002] The main problem in the design of high-energy laser devices is how to obtain the largest possible mode volume and good transverse mode discrimination ability to achieve high-energy single-mode operation, so as to extract energy efficiently from the active material while maintaining high beam quality. [0003] Commonly used laser resonators include stable cavity, unstable cavity and critical cavity. [0004] The main advantage of a stable cavity is that losses are extremely low. In all stable cavities, the geometric deflection loss of paraxial rays is zero, and the diffraction loss is usually negligibly small as long as the Fresnel of the cavity is not too small. But the stable cavity also has its inherent disadvantages: (1) The mold volume is small. For a typical stable cavity laser, the fundamental mode volume usually only occupies a small part of the volume of the act...

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Problems solved by technology

But the stable cavity also has its inherent disadvantages: (1) the mold volume is small

(2) When the Fresnel of the cavity is large, the diffraction losses of several lower-order transverse modes are so small that they can be ignored, so the resonant cavity actually loses the ability to select the transverse mode, which will inevitably lead to multi-mode operation, thereby degrading the beam quality

However, the total reflection mirror is formed by combining three conical mirrors, and the structure is complex. In use, three right-angled inner and outer conical mirrors are required to be coaxial, and the processing and manufacturing are relatively difficult.

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