MICROWAVE GAS LASER AND MICROWAVE DISCHARGE PUMPING METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To enhance the laser output and oscillation efficiency by subjecting a laser gas medium to uniform discharge pumping without raising or distributing the gas temperature on the optical axis of laser. SOLUTION: A microwave oscillated from a magnetron 10 is introduced directly to the perpendicular intersection 24a of a T branch rectangular cavity resonator 24 through an antenna 11 and 5o a discharge section 24b to form a microwave field of TE10 mode having substantially constant strength vertically to the optical axis of laser light. A laser gas medium 14 is subjected to discharge pumping by the microwave field to produce a laser output. Furthermore, shift in the resonance frequency caused by the design error of T branch rectangular cavity resonator 24 is corrected by fine adjustment of the insertion length of tuning blocks 13a, 13b or a reflector.