Development of CO2 laser excited by 2.45-GHz microwave discharge

Junichi Nishimae; Kenji Yoshizawa

doi:10.1117/12.18504

1 June 1990 Development of CO₂ laser excited by 2.45-GHz microwave discharge

Junichi Nishimae, Kenji Yoshizawa

Proceedings Volume 1225, High-Power Gas Lasers; (1990) https://doi.org/10.1117/12.18504
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

A new technique to excite a CO₂ laser by 2.45GHz microwave discharge is developed. Microwave plasma produced by the technique is so stable and homogeneous that any additional means to effectuate laser action such as fast circulation of laser gas and external magnetic field are not necessary. Utilizing the technique, a compact diffusion cooled CO₂ laser with 40cm active length is constructed. A magnetron available for microwave ovens is used as the power source of the laser. Average output power of 116W and maximum conversion efficiency of 18% in CW mode, peak output power of 1.2kW in pulse mode are obtained. Output beam with good focusibility is extracted by applying an unstable-waveguide hybrid resonator.

Citation Download Citation

Junichi Nishimae and Kenji Yoshizawa "Development of CO₂ laser excited by 2.45-GHz microwave discharge", Proc. SPIE 1225, High-Power Gas Lasers, (1 June 1990); https://doi.org/10.1117/12.18504

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