A fast-axial-flow rf-discharge-excited CO laser has been scaled up to produce an output power of more than 1 kW at room temperature (280–290 K). The discharge section is composed of eight discharge tubes, to which rf power is capacitively coupled. An output power of 1220 W is obtained with an Xe-added mixture, with corresponding electrical conversion efficiency and specific output of 7.9% and 1.8 W/cm3, respectively. Scaling characteristics of the scheme are discussed. The temperature dependence of the output, the output stability, and the beam properties are also reported.
© 1996 Optical Society of America
Original Manuscript: August 18, 1995
Published: January 15, 1996
Kouki Shimizu, Manabu Taniwaki, and Shunichi Sato, "1-kW, room-temperature, fast-axial-flow CO laser excited by a radio-frequency discharge," Opt. Lett. 21, 125-127 (1996)