Phase correlation during two-photon resonance process in an active cavity

Zifan Zhou; Nicholas J. Condon; Devin J. Hileman; Shih C. Tseng; Selim M. Shahriar

doi:10.1364/AO.380614

Phase correlation during two-photon resonance process in an active cavity

Zifan Zhou^*, Nicholas J. Condon, Devin J. Hileman, Shih C. Tseng, Selim M. Shahriar

^*Corresponding author for this work

Electrical and Computer Engineering

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

4 Scopus citations

Abstract

In this paper, we experimentally demonstrate a strong correlation between the frequencies of the Raman pump and the Raman probe inside an optically pumped Raman laser. We show that the correlation is due to rapid adjustment of the phase of the dipoles that produce the Raman gain, following a sudden jump in the phase of the Raman pump. A detailed numerical model validates this interpretation of the phase correlation. The width of the spectrum of the beat between the Raman pump and the Raman laser is significantly narrowed due to this correlation. As a result, the minimum measurable change in the cavity length, for a given linewidth of the Raman pump laser, is substantially reduced. Therefore, this finding is expected to enhance the sensitivity of such a laser in various metrological applications (e.g., accelerometry).

Original language	English (US)
Pages (from-to)	866-872
Number of pages	7
Journal	Applied optics
Volume	59
Issue number	3
DOIs	https://doi.org/10.1364/AO.380614
State	Published - Jan 20 2020

Funding

Air Force Office of Scientific Research (FA9550-18-01-0401, FA9550-18-P-0003); National Aeronautics and Space Administration (80NSSC18P2077); Defense Security CooperationAgency(PO4440778007). Funding. Air Force Office of Scientific Research (FA9550-18-01-0401, FA9550-18-P-0003); National Aeronautics and Space Administration (80NSSC18P2077); Defense Security Cooperation Agency (PO4440778007).

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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title = "Phase correlation during two-photon resonance process in an active cavity",

abstract = "In this paper, we experimentally demonstrate a strong correlation between the frequencies of the Raman pump and the Raman probe inside an optically pumped Raman laser. We show that the correlation is due to rapid adjustment of the phase of the dipoles that produce the Raman gain, following a sudden jump in the phase of the Raman pump. A detailed numerical model validates this interpretation of the phase correlation. The width of the spectrum of the beat between the Raman pump and the Raman laser is significantly narrowed due to this correlation. As a result, the minimum measurable change in the cavity length, for a given linewidth of the Raman pump laser, is substantially reduced. Therefore, this finding is expected to enhance the sensitivity of such a laser in various metrological applications (e.g., accelerometry).",

author = "Zifan Zhou and Condon, {Nicholas J.} and Hileman, {Devin J.} and Tseng, {Shih C.} and Shahriar, {Selim M.}",

note = "Publisher Copyright: {\textcopyright} 2020 Optical Society of America",

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T1 - Phase correlation during two-photon resonance process in an active cavity

AU - Zhou, Zifan

AU - Condon, Nicholas J.

AU - Hileman, Devin J.

AU - Tseng, Shih C.

AU - Shahriar, Selim M.

PY - 2020/1/20

Y1 - 2020/1/20

N2 - In this paper, we experimentally demonstrate a strong correlation between the frequencies of the Raman pump and the Raman probe inside an optically pumped Raman laser. We show that the correlation is due to rapid adjustment of the phase of the dipoles that produce the Raman gain, following a sudden jump in the phase of the Raman pump. A detailed numerical model validates this interpretation of the phase correlation. The width of the spectrum of the beat between the Raman pump and the Raman laser is significantly narrowed due to this correlation. As a result, the minimum measurable change in the cavity length, for a given linewidth of the Raman pump laser, is substantially reduced. Therefore, this finding is expected to enhance the sensitivity of such a laser in various metrological applications (e.g., accelerometry).

AB - In this paper, we experimentally demonstrate a strong correlation between the frequencies of the Raman pump and the Raman probe inside an optically pumped Raman laser. We show that the correlation is due to rapid adjustment of the phase of the dipoles that produce the Raman gain, following a sudden jump in the phase of the Raman pump. A detailed numerical model validates this interpretation of the phase correlation. The width of the spectrum of the beat between the Raman pump and the Raman laser is significantly narrowed due to this correlation. As a result, the minimum measurable change in the cavity length, for a given linewidth of the Raman pump laser, is substantially reduced. Therefore, this finding is expected to enhance the sensitivity of such a laser in various metrological applications (e.g., accelerometry).

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Phase correlation during two-photon resonance process in an active cavity

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