Shape of saturated absorption peaks in a He--Ne//sup 127/I/sub 2/ laser (633 nm)
Journal Article
·
· Opt. Spectrosc. (Engl. Transl.); (United States)
OSTI ID:6721267
On the basis of a comparison of calculated data on the frequency shifts of a laser stabilized by saturated absorption in iodine: data obtained by allowing for collisions in iodine vapor under different approximations with experimental data: we have refined the mechanism of formation of collisional asymmetry of iodine peaks of saturated absorption and the profile shape of the peaks. The best agreement is obtained for the profile whose antisymmetric component has a dispersion shape, and whose symmetric component differs appreciably from the Lorentzian shape in that it has a sharper top. The main contribution to the asymmetry is made by elastic collisions with a large scattering angle. The sharpening of the top of the peak may be due to strong saturation of the absorption of the Gaussian beam and possibly also to the slow-molecule effect.
- Research Organization:
- United Technologies Research Center, Silver Lane, E. Hartford, Connecticut 06108
- OSTI ID:
- 6721267
- Journal Information:
- Opt. Spectrosc. (Engl. Transl.); (United States), Journal Name: Opt. Spectrosc. (Engl. Transl.); (United States) Vol. 64:3; ISSN OPSUA
- Country of Publication:
- United States
- Language:
- English
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