FM Eliminated Ch4 Locked Frequency Stabilization of 3.39 μM He-Ne Laser in Dual Feedback Control

Masataka Nakazawa, Jun Ichi Nakamura, Toshimitsu Musha

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The frequency of the 3, 39 μm He-Ne laser was locked to the CH4 saturated absorption line by means of integral-proportional feedback control, i.e., dual feedback control. The frequency modulation was applied by a vibrating mirror placed outside a laser cavity, obtaining a modulation-free laser beam with a stabilized frequency. The long-term stability achieved under integral feedback control was about ±1.1 X 10-11, which was further improved to ±1.35 X 10-12 under dual feedback control. The Allan variance measured by the photomixing technique was 1, 77 X I0-12 at an averaging time 100 s.

Original languageEnglish
Pages (from-to)854-859
Number of pages6
JournalIEEE Journal of Quantum Electronics
Volume16
Issue number8
DOIs
Publication statusPublished - 1980 Aug
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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