Dicke coherent narrowing in two-photon and Raman spectroscopy of thin vapor cells
Journal Article
·
· Physical Review. A
- Laboratoire de Physique des Lasers, UMR7538 du CNRS et de l'Universite Paris 13, 99 Avenue JB Clement, F 93430 Villetaneuse (France)
The principle of coherent Dicke narrowing in a thin vapor cell, in which sub-Doppler spectral line shapes are observed under a normal irradiation for a {lambda}/2 thickness, is generalized to two-photon spectroscopy. Only the sum of the two wave vectors must be normal to the cell, making the two-photon scheme highly versatile. A comparison is provided between the Dicke narrowing with copropagating fields, and the residual Doppler broadening occurring with counterpropagating geometries. The experimental feasibility is discussed on the basis of a first observation of a two-photon resonance in a 300-nm-thick Cs cell. Extension to the Raman situation is finally considered.
- OSTI ID:
- 20718664
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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