He--Ne ring laser with locked longitudinal modes

Journal Article · Sun Jun 01 04:00:00 EDT 1975 · Sov. Phys. - Tech. Phys. (Engl. Transl.), v. 20, no. 6, pp. 770-773

OSTI ID:4055234

Petrun'kin, V Y; Nikolaev, V M; Galkin, S L

The primary purpose of these experiments on a He--Ne ring laser with locked longitudinal modes at 0.63 $mu$, is to determine the factors that influence the beat frequency of the oppositely directed waves and to compare the frequency characteristics of phase-locked multimode and single-mode operations. Locking of the longitudinal modes is achieved by modulating the cavity loss at a frequency near the intermode frequency. The experimental results show the advantages of the mode-locked regime over the single-mode regime. In the mode- locked regime the beat frequency is less sensitive to small changes (of the order of thermal changes) in the cavity. The capture band for oppositely directed waves is narrower; in the phase-locked regime this band is governed by back- scattering solely from surfaces near the two spike meeting points. (AIP)

• Research Organization: M. I. Kalinin Polytechnical Institute, Leningrad
• NSA Number: NSA-33-023182
• OSTI ID: 4055234
• Journal Information: Sov. Phys. - Tech. Phys. (Engl. Transl.), v. 20, no. 6, pp. 770-773, Journal Name: Sov. Phys. - Tech. Phys. (Engl. Transl.), v. 20, no. 6, pp. 770-773; ISSN SPTPA
• Country of Publication: United States
• Language: English

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