Coherence and interference in laser coupled atomic systems
Abstract
Electromagnetically induced transparency and coherent population trapping in multi-level atomic systems have various applications in nonlinear optics and spectroscopy. We study four-wave mixing and light amplification in simple three-level and four-level atoms coupled by one or two strong coherent fields. When two strong lasers drive the same transition between the two states, the doubly dressed states are generated and can be explored by a weak probe laser or by the nearly degenerate four-wave mixing. When the two strong lasers couple different transitions, coherent population trapping is realized, which can be utilized to achieve lasing without inversion and enhance the third order nonlinear susceptibility. We will report our experimental studies of light amplification and four-wave mixing in rubidium atomic systems based on laser induced atomic coherence and interference.
- Publication:
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APS Southeastern Section Meeting Abstracts
- Pub Date:
- November 1998
- Bibcode:
- 1998APS..SES..ED05S