Observation of Coherent Transients in Ultrashort Chirped Excitation of an Undamped Two-Level System
Journal Article
·
· Physical Review Letters
The effects of coherent excitation of a two-level system with a linearly chirped pulse are studied theoretically and experimentally [in Rb (5s-5p)] in the low field regime. The coherent transients are measured directly on the excited state population on an ultrashort time scale. A sharp step corresponds to the passage through resonance. It is followed by oscillations resulting from interferences between off-resonant and resonant contributions. We finally show the equivalence between this experiment and Fresnel diffraction by a sharp edge.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40277058
- Journal Information:
- Physical Review Letters, Vol. 87, Issue 3; Other Information: DOI: 10.1103/PhysRevLett.87.033001; Othernumber: PRLTAO000087000003033001000001; 026128PRL; PBD: 16 Jul 2001; ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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