Polarization orthogonalizer for a pair of laser beams with nearly equal frequencies
- Authors
- Yim, Sin Hyuk; Yoon, T. H.; Cho, D.
- Issue Date
- 12월-2008
- Publisher
- AMER INST PHYSICS
- Keywords
- light polarisation; Michelson interferometers; optical beam splitters; rubidium
- Citation
- REVIEW OF SCIENTIFIC INSTRUMENTS, v.79, no.12
- Indexed
- SCIE
SCOPUS
- Journal Title
- REVIEW OF SCIENTIFIC INSTRUMENTS
- Volume
- 79
- Number
- 12
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/122255
- DOI
- 10.1063/1.3040499
- ISSN
- 0034-6748
- Abstract
- We have demonstrated a device to produce an overlapping pair of orthogonally polarized laser beams with a 3 GHz frequency offset out of a single laser beam containing the two frequency components with the same linear polarization. Our design is based on a Michelson interferometer formed by a polarizing beam splitter and two quarter-waveplates. Such a device can be used to make the polarization states of a carrier and a sideband produced through modulation mutually orthogonal. An orthogonally polarized pair of coherent laser beams can be used for an interferometric measurement of a small displacement in a heterodyne scheme or to produce a large-contrast coherent population trapping signal from alkali metal atoms. As a demonstration we used the device to achieve 40% contrast for a coherent population trapping signal from a rubidium vapor cell.
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Collections - College of Science > Department of Physics > 1. Journal Articles
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