Investigation of fluctuations of the frequency of a helium-neon laser emitting at λ = 0.63 μ in the technical part of the spectrum

G. A. Milushkin, B. I. Troshin


Abstract: The results are given of an experimental investigation of the spectral density of fluctuations of the frequency of two single-mode lasers. The output frequencies of these lasers were shifted relative to one another by an automatic control system. The known characteristics of the control system were used in a linear-approximation calculation of the spectral density of the laser frequency under free-oscillation conditions. The spectral properties of some of the mechanical elements of the laser unit were investigated.

UDC: 621.373.8:621.376

PACS: 42.55.Lt, 42.60.By, 42.60.Jf, 42.60.Lh

Received: 09.03.1973
Revised: 28.05.1973

 English version: Soviet Journal of Quantum Electronics, 1974, 4:1, 48–50