GAS LASER WITH TUNABLE RADIATION SPECTRUM Russian patent published in 1995 - IPC

FIELD: laser systems. SUBSTANCE: optical resonator of gas laser has two-arm V-shaped configuration. Reflecting diffraction grid 7 and flat output mirror 6 are positioned on its ends. Diffraction grid is placed in focal plane of spherical mirror 5 in agreement with autocollimation circuit. Active medium with excitation system are positioned between spherical and flat mirrors. Device of spatial selection of lines of radiation spectrum is matching with excitation system formed by two flat sectionalized high-frequency electrodes 4 arranged in parallel opposite to each other. Electrode sections are fabricated in the of conductive tracks located along optical axis of resonator, insulated from each other and positioned in match with paths of optical rays of each line of spectrum. EFFECT: enhanced operational efficiency and stability. 1 dwg, 1 tbl