Two-photon resonant four-wave mixing in atomic sodium vapour
Abstract
Using the 4 d- and 5 s-states of sodium, two different types of two-photon resonance enhanced four-wave mixing have been observed. In the first type 2 v L = v IR + v pIR radiation near 2.34 μm and UV radiation near 320 nm has been detected. In the second type v P - v S = v L + v IR the UV radiation produced in the first parametric process acted as a pump for stimulated electronic Raman scattering via the 4 p-state of sodium. Resonantly enhanced by the two-photon transition 3 s 4 s, radiation near 1.18 μm was produced in this scheme. The realisation of a tunable coherent IR source based on these four-wave mixing processes is discussed.
- Publication:
-
Applied Physics
- Pub Date:
- April 1978
- DOI:
- Bibcode:
- 1978ApPhy..15..427H
- Keywords:
-
- Atomic Energy Levels;
- Infrared Lasers;
- Optical Resonance;
- Sodium Vapor;
- Wave Interaction;
- Coherent Light;
- Dye Lasers;
- Electron Scattering;
- Infrared Radiation;
- Laser Pumping;
- Raman Spectra;
- Tuning;
- Lasers and Masers;
- PACS 42.65 C;
- 42.65 C