A 10-cm Discharge-Length He-ZnII White Light Laser

Wakao Sasaki; Kimihiko Itani; Tatehisa Ohta

doi:10.1117/12.951239

1 June 1989 A 10-cm Discharge-Length He-ZnII White Light Laser

Wakao Sasaki, Kimihiko Itani, Tatehisa Ohta

Proceedings Volume 1041, Metal Vapor Laser Technology and Applications; (1989) https://doi.org/10.1117/12.951239
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

We demonstrate a unique, efficient white light laser source realized by the He-Zn mixture with substantially short discharge length of 10 cm. The white laser light can be made up of only two wavelengths at simultaneous oscillation --- 492.4 nm (4f²Fo712_4d²D_5/2) and 610.2 nm (5d ²D 512 -5 2p0_3/2 The ideal white color region for human eyes lies just between these two wavelengths in the chromaticity diagram. Therefore, such a compact white light laser will be useful for some specific purposes such as a white color standard. Moreover, we have analyzed the proper relation between the electron energy and the discharge sustaining voltage which appears as a function of the Zn vapor pressure measured at the terminal of the tube, considering the Druyvesteyn distribution of electron energy. Then we succeeded to operate a He-Zn laser tube in white light with 10-cm discharge length. The derived output beam was estimated to be about 0.5 mW.

Citation Download Citation

Wakao Sasaki, Kimihiko Itani, and Tatehisa Ohta "A 10-cm Discharge-Length He-ZnII White Light Laser", Proc. SPIE 1041, Metal Vapor Laser Technology and Applications, (1 June 1989); https://doi.org/10.1117/12.951239

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