Optoelectronic oscillator stabilized to an intra-loop atomic filter with a coherent population trapping resonance
- Authors
- Yim, Sin Hyuk; Cho, D.
- Issue Date
- 7월-2012
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Optoelectronic oscillator; Atomic clock; Coherent population trapping
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.61, no.1, pp.17 - 21
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 61
- Number
- 1
- Start Page
- 17
- End Page
- 21
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/108112
- DOI
- 10.3938/jkps.61.17
- ISSN
- 0374-4884
- Abstract
- We report the construction and characterization of an optoelectronic oscillator stabilized to an intra-loop 85Rb cell with a 3.036-GHz coherent population trapping (CPT) resonance. We use an extended-cavity diode laser (ECDL) as a light source and directly modulate its injection current by using the beating signal filtered by the CPT resonance. Use of the ECDL guarantees stability of the carrier frequency and eliminates a bulky and power-consuming external modulator. We also adjust the cavity length and operate the ECDL in multimode in order to achieve a high modulation efficiency. To further improve the oscillator's frequency stability, we incorporate a negative feedback system based on a CPT dispersion. The Allan deviation of the oscillator frequency is 3 x 10(-10) at a 100-s integration time.
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Collections - College of Science > Department of Physics > 1. Journal Articles
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