Copper density measurement of a large-bore CVL

Kazuo Hayashi; Etsuo Noda; Yasushi Iseki; Ikuo Watanabe; Setsuo Suzuki; Osami Morimiya

doi:10.1117/12.58972

1 May 1992 Copper density measurement of a large-bore CVL

Kazuo Hayashi, Etsuo Noda, Yasushi Iseki, Ikuo Watanabe, Setsuo Suzuki, Osami Morimiya

Proceedings Volume 1628, Intense Laser Beams; (1992) https://doi.org/10.1117/12.58972
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

The ground state and the lower laser level copper densities were measured in a large-bore copper vapor laser (CVL). The beam diameter was 80 mm, the discharge length 1500 mm, and the output power about 100 W at an operation of a repetition frequency 5 kHz. A new laser-absorption method has been developed to measure the copper ground state density. The measured copper density of the ground state was 1 to approximately 5 X 1021 m-3 and the radial profile was hollow. The profile can be explained from the radial gas temperature profile. The lower laser level (metastable state) densities were measured by the ordinary laser-absorption method. The density of the lower laser level for green emission was about 1 X 1018 m-3 and that for yellow emission was about 3 X 1017 m-3 at the center. The lower laser level densities were higher at the center than near the wall in contrast with the ground state density.

Citation Download Citation

Kazuo Hayashi, Etsuo Noda, Yasushi Iseki, Ikuo Watanabe, Setsuo Suzuki, and Osami Morimiya "Copper density measurement of a large-bore CVL", Proc. SPIE 1628, Intense Laser Beams, (1 May 1992); https://doi.org/10.1117/12.58972

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