Diffracted light spectroscopy of the 3.39 µm CH4system
| Autor: | J. M. Lenormand, A. Le Floch, R. Le Naour, P. Brun |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
Diffraction
Physics Absorption spectroscopy Gas laser business.industry Nonlinear optics Condensed Matter Physics Laser Atomic and Molecular Physics and Optics Spectral line law.invention Optics law Physics::Accelerator Physics Electrical and Electronic Engineering business Spectroscopy Beam (structure) |
| Zdroj: | IEEE Journal of Quantum Electronics. 19:1474-1476 |
| ISSN: | 0018-9197 |
| DOI: | 10.1109/jqe.1983.1071756 |
| Popis: | A differential analysis of the line shapes of the intracavity saturated absorption peak of methane, observed simultaneously on both the output beam of the laser and on the diffracted beam, points out frequency shifts on the order of several tens of kHz, and also asymmetries of opposite signs. The value and sign of the shift on the principal output beam depends essentially on the cavity geometry. A "critical geometry," analogous to that found for the classical Lamb dip, is proposed for elimination of these important shifts related to the Gaussian character of the beams and for obtaining symmetric line profiles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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