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Nonlinear optical phase shift obtained from two-level atoms confined in a planar microcavity

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Title: Nonlinear optical phase shift obtained from two-level atoms confined in a planar microcavity
Authors: Oka, Hisaki Browse this author
Fujiwara, Hideki Browse this author →KAKEN DB
Takeuchi, Shigeki Browse this author →KAKEN DB
Sasaki, Keiji Browse this author →KAKEN DB
Keywords: Bragg gratings
distributed Bragg reflectors
finite difference time-domain analysis
nonlinear optics
optical phase shifters
optical resonators
Issue Date: 1-Mar-2010
Publisher: American Institute of Physics
Journal Title: Journal of Applied Physics
Volume: 107
Issue: 5
Start Page: 054310
Publisher DOI: 10.1063/1.3327411
Abstract: We investigate the nonlinear optical phase shift obtained from a thin atomic layer confined in a distributed Bragg reflector (DBR) microcavity with reflection geometry. The optical response of the atom-cavity system is numerically analyzed using finite-difference time-domain method with the optical Bloch equations. The optimal position of atomic layer, at which a maximal phase shift of π is realized, drastically changes with the quality factor Q of the cavity. We show that for high Q the maximal phase shift of π can be obtained anywhere in the cavity field independently of atomic layer position. This result is in contrast to that obtained from a one-dimensional atom model in the limit of bad cavity, where a maximal phase shift of π is obtained only at the antinode of the cavity field. We also show that the independence of phase shift on atom position realized in high-Q regime is due to an interference effect in the surface layers of the DBR cavity.
Rights: Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 107, 054310 (2010) and may be found at
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 竹内 繁樹

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