Iodine stabilized laser with three internal mirrors
Abstract
The construction and operation of an He/Ne-20 laser stabilized by saturated absorption in (I-129)2 vapor are described. The laser is of fused silica construction with internal mirrors. The interaction of the iodine absorber with the oscillating mode is modified by the use of a three-mirror cavity with a control system employing simultaneously first- and third-harmonic error sensing. Measurements are presented of the frequency stability of the laser and its wavelength against the Kr-86 standard. If the Rowley-Hamon model of the krypton line profile is assumed and the defined wavenumber is assigned to the mean of the peak and the centroid, the measured wavelength of the m hyperfine component is 632991 327 plus or minus 0.7 fm.
- Publication:
-
Applied Optics
- Pub Date:
- June 1975
- DOI:
- 10.1364/AO.14.001303
- Bibcode:
- 1975ApOpt..14.1303C
- Keywords:
-
- Frequency Stability;
- Helium-Neon Lasers;
- Iodine;
- Mirrors;
- Optical Resonators;
- Additives;
- Cavity Resonators;
- Frequency Measurement;
- Gas Mixtures;
- Signal Stabilization;
- Signal To Noise Ratios;
- Systems Engineering;
- Lasers and Masers;
- LASERS: HE-NE