Lateral multi-end symmetry pumped alkali vapor laser MOPA (master oscillator power amplifier) system

Abstract

The invention discloses a lateral multi-end symmetry pumped alkali vapor laser MOPA (master oscillator power amplifier system). A tunable semiconductor laser power amplification system comprises a semiconductor laser, an amplifier, two isolators, two planar total reflective mirrors, two half wave plates, two half-transparent half-reflecting mirrors, a high-transparent low-reflecting mirror, a rubidium vapor saturation absorbing tank and an optical detector; a seed light system comprises a focusing lens, a polarization splitting lens, a temperature control box, a rubidium vapor tank, a concave full-reflecting mirror and a planar output coupling mirror; the master oscillator power amplifier MOPA system comprises a planar full-reflecting mirror, a laser diode array, a beam expanding mirror, a transparent quartz tube and a rubidium vapor tank. The one-way absorption efficiency of alkali metal vapor to pumping light is improved, and stable output of seed light can be ensured due to a stable plano-concave resonant cavity; vapor deposition can be avoided, and the service life of the vapor tank is prolonged; by adopting a lateral multi-end symmetry beam coupling mode, a high matching degree of pumping light and an expanded seed light mode can be ensured, and high-quality and high-efficiency amplification light can be obtained.

Description

technical field [0001] The present invention relates to a vapor laser MOPA system, in particular to a lateral multi-terminal symmetrically pumped alkali metal vapor laser MOPA (master oscillator power amplifier) ​​system. Background technique [0002] Diode-pumped alkali metal vapor lasers DPALs (diode-pumped alkali vopor lasers) are new laser devices with high-efficiency and high-power near-infrared laser output with high beam quality. These near-infrared lasers are used in laser cooling, directional energy transmission, material processing, etc. In recent years, it has aroused great interest and in-depth research of researchers, and has made great progress. The use of MOPA system is an effective way to increase the power of alkali metal vapor laser while ensuring the beam quality and avoiding thermal effects. At present, a series of progress has been made in the vertical pumping and horizontal single-end pumping alkali metal vapor laser MOPA systems in experiments. There ...

AI Technical Summary

Problems solved by technology

The use of MOPA system is an effective way to increase the power of alkali metal vapor laser while ensuring the beam quality and avoiding thermal effects. At present, a series of progress has been made in the vertical pumping and horizontal single-end pumping alkali metal vapor laser MOPA systems in experiments. There are no relevant experimental results for multi-terminal symmetrical pumping

Images