Production of a coherent pair of light beams with a microwave frequency difference from a single extended-cavity diode laser
- Authors
- Yim, Sin Hyuk; Cho, D.
- Issue Date
- 2월-2010
- Publisher
- AMER INST PHYSICS
- Keywords
- laser cavity resonators; laser mode locking; laser modes; light coherence; optical modulation; radiation pressure; semiconductor lasers
- Citation
- REVIEW OF SCIENTIFIC INSTRUMENTS, v.81, no.2
- Indexed
- SCIE
SCOPUS
- Journal Title
- REVIEW OF SCIENTIFIC INSTRUMENTS
- Volume
- 81
- Number
- 2
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/117106
- DOI
- 10.1063/1.3309782
- ISSN
- 0034-6748
- Abstract
- We produced a pair of coherent laser beams with a 3-GHz frequency difference by optically phase locking two modes from a single, multimode extended-cavity diode laser. This method is complementary to either a direct modulation or an optical phase locking of two independent lasers. A large differential frequency shift between the two modes of the laser allows efficient phase locking. We developed a simple theory to account for the large differential frequency shift. Allan deviation of the beat frequency when the two modes are phase-locked drops as an inverse of the measurement time and it reaches 10(-14) when the time is 1 h. Coherent population trapping spectroscopy of Rb atoms using the phase-locked beams resulted in a spectrum as narrow as that of the case using direct modulation by a stable frequency synthesizer.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Science > Department of Physics > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.