We developed three types of frequency stabilized semiconductor lasers (LD) source or optical synthesizers using ¹²C₂H₂ or H¹³C¹⁴N absorption lines. This paper reports on the three methods below: (1) A frequency stabilized LD source controlled by sinusoidal LD current modulation reduced to lowest possible values. The maximum frequency deviation was +/- 5 MHz. And a frequency stability of 9 X 10^-10 (DOT) (tau) ^-1/2 (0.1 s 12C₂H₂ absorption line and a frequency stability of less than 1.0 X 10^-9 (10 s 13C¹⁴N absorption line were obtained from the beat method. (2) An optical synthesizer using two LDs and a newly developed frequency control method. The frequency synthesized range was +/- 2 GHz from the absorption frequency. A short-term frequency stability of about 2 X 10^-9 (DOT) (tau) ^-1/2 (0.1 s -10 (10 s

Date Published: 30 April 1993
PDF: 10 pages
Proc. SPIE 1837, Frequency-Stabilized Lasers and Their Applications, (30 April 1993); doi: 10.1117/12.143666

Published in SPIE Proceedings Vol. 1837:
Frequency-Stabilized Lasers and Their Applications
Y. C. Chung, Editor(s)