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Using phase dynamics in EIT to probe ground state relaxation in rubidium vapor
Using phase dynamics in EIT to probe ground state relaxation in rubidium vapor
- Source :
- Journal of Modern Optics. 56:975-979
- Publication Year :
- 2009
- Publisher :
- Informa UK Limited, 2009.
-
Abstract
- We have studied a time response of electromagnetically induced transparency (EIT) in a rubidium vapor to a rapid variation of optical phase. We have observed a very fast growth of the absorption when the phase of the optical field has been abruptly changed, followed by a slow return to the level of steady-state absorption. The recovery time decreases with increasing optical power. A simple theoretical analysis shows that under our experimental conditions the low power limit of the recovery time is determined by the ground relaxation time. In our case it is defined by a time-of-flight of rubidium atoms through laser beam. The obtained value of the ground state relaxation time is in a good agreement with result of direct measurements by ‘relaxation in the dark’ method. Our technique based on phase dynamics in EIT can be used for investigation of the ground state relaxation and the fast control of EIT.
- Subjects :
- Materials science
Electromagnetically induced transparency
business.industry
Relaxation (NMR)
Phase (waves)
Physics::Optics
chemistry.chemical_element
Optical power
Optical field
Atomic and Molecular Physics, and Optics
Rubidium
Optics
chemistry
Atomic physics
Ground state
business
Absorption (electromagnetic radiation)
Subjects
Details
- ISSN :
- 13623044 and 09500340
- Volume :
- 56
- Database :
- OpenAIRE
- Journal :
- Journal of Modern Optics
- Accession number :
- edsair.doi...........70e87ae8983d1111260856e605f95fa7
- Full Text :
- https://doi.org/10.1080/09500340902836275