Pump temperature-control-free compact all-solid-state laser

By adopting the bonding design of polygonal structure gain crystals and non-doped crystals with polygonal slat gain crystals, the problems of low light-light conversion efficiency and temperature control of existing lasers are solved, and temperature-free control and high-efficiency beam quality over a wide temperature range are achieved.

CN119651336APending Publication Date: 2025-03-18HUBEI HUAZHONG PHOTOELECTRIC SCI & TECH CO LTD
8 Cites 0 Cited by

Patent Information

Application Number
CN202411759667.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-03
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

Existing large-energy pulse lasers have problems with low light-light conversion efficiency, poor beam quality, and the need for precise temperature control.

Method used

The polygonal structure gain crystal is used as the resonant cavity, and a single-wavelength pump light is used to fully reflect and transmit in the gain crystal. Combined with the bonding design of non-doped crystals and polygonal slat gain crystals, the combination of multiple resonant cavity mirrors and gain crystals in traditional lasers is avoided, the volume of the laser is reduced, and the amplified spontaneous radiation and self-excitation oscillation effects are suppressed through the design of special shape and size.

Benefits of technology

The temperature-free control of the LD array module is achieved within a wide temperature range of -45℃~60℃, which improves the light-light conversion efficiency and beam quality of the laser and ensures the stable operation of the laser.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a pumping temperature-control-free compact all-solid-state laser, and belongs to the technical field of solid-state lasers, the pumping temperature-control-free compact all-solid-state laser comprises an LD array, a coupling lens and a gain crystal which are sequentially arranged in the light path direction, laser emitted by the LD array comprises pumping light and signal light, and the transmission paths of the pumping light and the signal light in the gain crystal are the same; the gain crystal comprises a frame-shaped area defined by a first plane, a second plane, a third plane, a fourth plane, a fifth plane and a sixth plane, and light emitted by the LD array is totally reflected and output in the frame-shaped area. The single-wavelength pump light is utilized to carry out total reflection transmission in the polygonal gain crystal, the absorption length of the pump light is greatly increased, temperature-control-free control over the LD array module within the wide temperature range of-45 DEG C to 60 DEG C can be achieved, and the light-light conversion efficiency and the light beam quality of the laser can be improved through the collinear transmission form of the pump light and the signal light.
Need to check novelty before this filing date? Find Prior Art