Laser resonant cavity structure

Abstract

The invention provides a laser resonant cavity structure, comprising a front end plate (1), a rear end plate (2), a central tube (3), an optical bridge rod (4), a joint bearing (5) and a central tube spring (8). The invention is characterized in that the resonant cavity further comprises hangings (9) which can be fixed on a casing and which are respectively arranged outside the front end plate (1) and the rear end plate (2); the two ends of the central tube respectively pass through the neutral positions of the front end plate (1) and the rear end plate (2) and are connected with the hanging through the central tube spring which can only move axially along the central tube; the two ends of the central tube are respectively connected with the front end plate (1) and the rear end plate (2),one end is fixedly connected and the other end is connected in a relative sliding manner along the axial direction of the central tube. In the resonant cavity structure of the invention, the central tube and the end plate assembly are separated away from each other skillfully, thus structurally ensuring that the stability of the resonant cavity is not influenced when deformation occurs to the central tube, and simultaneously ensuring the stability of the resonant cavity in the transportation process, which also provides a guarantee for obtaining ideal, stable and reliable output laser beam.

Description

technical field [0001] The invention relates to a laser, in particular to a laser resonant cavity structure. Background technique [0002] The resonant cavity is one of the core units of the laser, which is mainly composed of a central tube, end plates, optical bridge rods and other components. The function of the resonant cavity is to select the light with a certain frequency and the same direction as the most preferential amplification, and suppress the light of other frequencies and directions. All photons that do not move along the axis of the resonant cavity quickly escape from the cavity and are no longer in contact with the working medium. The photons moving along the axis will continue to move forward in the cavity, and will continue to run back and forth through the reflection of the two mirrors to generate oscillations. During the operation, they will continue to meet the stimulated particles and generate stimulated radiation. The photons running along the axis wi...

AI Technical Summary

Problems solved by technology

This structure has the following two disadvantages: 1. When the central tube 3 is deformed due to the ambient temperature, although the central tube spring 8 has a stress that can offset the deformation, this force is limited. When the stress of the central tube spring 8 is not enough to offset When the force generated by the deformation of the central tube 3, the end plate will also be deformed, and the resonant cavity is unstable at this time

2. The V-shaped block 7 can fix the ball bearing 6. At the same time, the joint bearing 5 fixes the end plate on the casing, but at this time, it can only ensure the fixing of the front, rear, left, right and lower parts. When the casing is transported During the process, the fixation above the end plate cannot be guaranteed, thus affecting the stability of the resonant cavity

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