Practical three-folding optical cavity apparatus of transverse flow CO2 laser

Abstract

A cross flow CO2 laser uses a three-segment optical cavity apparatus, and is composed of a front and a rear optical cavity bodies with same structure, wherein the optical cavity body includes a reflection mirror and integration regulating mechanism, a non-coaxial double-accordion pipe mechanism, a window mirror seat and rear inverse mirror seat regulating mechanism, an optical cavity mechanical locating and cavity mirror regulating mechanism, a optical cavity exterior cold water circulation mechanism. The two accordion pipes are sealing mounted on two surfaces of a middle integrated flange, wherein the shaft lines have space length with each other, and the other two ends of the accordion pipes are connected to a regulation flange and an end flange separately; the end flange connecting with the window mirror seat and rear inverse mirror seat regulating mechanism, the regulation flange connecting with the optical cavity case body, the reflection mirror and an absorption cold light plate being mounted on the middle integrated flange; the laser has professional design, simple structure, convenient regulation, longer service lifetime, less elements, dependable performance and stronger practicability, scientificaalness and operability. The cavity type can be changed simply without regulating cavities, by means of adding simple interface accessory and improving the foundation structure of light bridge based on the structure.

Description

technical field [0001] The present invention relates to a laser, specifically a cross-flow CO 2 Laser folded optical resonator device. Background technique [0002] In order to obtain the laser output of the low-order mode, the maximum activation length can be obtained as much as possible by using the mode selection feature of the long cavity. The experience at home and abroad shows that the folded cavity is a practical technology to improve the beam quality and increase the output power. [0003] However, the technical method of the multi-fold optical resonator commonly used at present can ensure that the laser can run for a long time, but because the structure of the multi-fold optical resonator is complex, the adjustment of the optical axis position of the resonator and the multi-mirror The adjustment of the cavity is quite difficult, because the technical requirements for the cooling of the folding mirror are relatively strict, so the implementation is relatively compli...

AI Technical Summary

Problems solved by technology

[0003] However, the technical method of the multi-fold optical resonator commonly used at present can ensure that the laser can run for a long time, but due to the complex structure of the multi-fold optical resonator, the adjustment of the optical axis position of the resonator and the multi-mirror The adjustment of the cavity is quite difficult, because the technical requirements for the cooling of the folding mirror are relatively strict, so the implementation is also relatively complicated. As for how to reduce the influence of parasitic modes, it is also a difficult problem.

In short, in order to fully ensure the quality, power and density of the output light of the laser, it is necessary to make a comprehensive overall consideration in terms of the structure of the optical cavity and the refractive index (N) of the optical cavity. Even the actual use has a certain degree of difficulty

These problems are the shortcomings and deficiencies of the multi-fold optical resonators currently used in various lasers.

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