Optical anisotropy induced by two intense laser fields in sodium vapor

K. Yamada; H. Takahashi

doi:10.1016/0030-4018(90)90537-4

Optical anisotropy induced by two intense laser fields in sodium vapor

K. Yamada, H. Takahashi

Department of Physics

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

Optical anisotropy of an atomic sodium system driven by two intense laser fields has been studied with polarization spectroscopy. The anisotropy has revealed various aspects of higher order optical processes such as a resonant three-photon transition and an ac Stark effect, and it could have been regarded as due to one of the transitions between "dressed states". We have measured the optical anisotropy which appears at frequencies where 2ω₁-ω₂ or 2ω₂-ω₁ are close to the sodium D lines. The peak anisotropy was shifted by an ac Stark effect caused by both laser fields. Signal lineshapes due to the anisotropy have been calculated in the vicinity of the D₁ line by using the modified Mollow theory. Agreement between the experiment and the calculations is satisfactory.

Original language	English
Pages (from-to)	307-310
Number of pages	4
Journal	Optics Communications
Volume	75
Issue number	3-4
DOIs	https://doi.org/10.1016/0030-4018(90)90537-4
Publication status	Published - 1990 Mar 1

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ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

Cite this

Yamada, K., & Takahashi, H. (1990). Optical anisotropy induced by two intense laser fields in sodium vapor. Optics Communications, 75(3-4), 307-310. https://doi.org/10.1016/0030-4018(90)90537-4

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AB - Optical anisotropy of an atomic sodium system driven by two intense laser fields has been studied with polarization spectroscopy. The anisotropy has revealed various aspects of higher order optical processes such as a resonant three-photon transition and an ac Stark effect, and it could have been regarded as due to one of the transitions between "dressed states". We have measured the optical anisotropy which appears at frequencies where 2ω1-ω2 or 2ω2-ω1 are close to the sodium D lines. The peak anisotropy was shifted by an ac Stark effect caused by both laser fields. Signal lineshapes due to the anisotropy have been calculated in the vicinity of the D1 line by using the modified Mollow theory. Agreement between the experiment and the calculations is satisfactory.

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10.1016/0030-4018(90)90537-4