Positive Column Type UV (325nm) He-Cd+ Lasers

Kyoichi DEKI; Shinji SUGIOKA; Keiichi UJIIE; Hiroshige HATA; Hiroyoshi KITANO

doi:10.2184/lsj.22.834

Positive Column Type UV (325nm) He-Cd⁺ Lasers

Kyoichi DEKI, Shinji SUGIOKA, Keiichi UJIIE, Hiroshige HATA, Hiroyoshi KITANO

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Keywords: 325nm He-Cd⁺ laser, Automatic alignment control, He pressure sensor, Laser noise reduction, Isotope shif

JOURNAL FREE ACCESS

1994 Volume 22 Issue 10 Pages 834-842

DOI https://doi.org/10.2184/lsj.22.834

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Abstract

A simple automatic alignment control of the optical axis of the laser cavity, astable He pressure sensor, and the reduction of laser noise are described for newly developd 325nm He-Cd⁺ lasers. Furthermore, the isotope shift of 325nm Cd⁺ transition is estimated from the axial mode profile observed with a Fabry-Prot interferometer and from curve fitting calculations. The estimated value for the spacing of alacent even isotopes is about 1.5GHz.

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