Optoelectronic oscillator stabilized to an intra-loop atomic filter with a coherent population trapping resonance

Sin Hyuk Yim; D. Cho

doi:10.3938/jkps.61.17

Optoelectronic oscillator stabilized to an intra-loop atomic filter with a coherent population trapping resonance

Sin Hyuk Yim, D. Cho

Department of Physics

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

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 × 10^-10 at a 100-s integration time.

Original language	English
Pages (from-to)	17-21
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	61
Issue number	1
DOIs	https://doi.org/10.3938/jkps.61.17
Publication status	Published - 2012 Jul

Keywords

Atomic clock
Coherent population trapping
Optoelectronic oscillator

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.3938/jkps.61.17

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title = "Optoelectronic oscillator stabilized to an intra-loop atomic filter with a coherent population trapping resonance",

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 × 10-10 at a 100-s integration time.",

keywords = "Atomic clock, Coherent population trapping, Optoelectronic oscillator",

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AU - Yim, Sin Hyuk

AU - Cho, D.

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N2 - 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 × 10-10 at a 100-s integration time.

AB - 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 × 10-10 at a 100-s integration time.

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KW - Coherent population trapping

KW - Optoelectronic oscillator

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Optoelectronic oscillator stabilized to an intra-loop atomic filter with a coherent population trapping resonance

Abstract

Keywords

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