Polarization Dependence of Stimulated Resonance Raman Scattering from a Single Crystal of Biphenyl-Capped Thiophene
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概要
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We demonstrate the polarization-dependent laser oscillation of a biphenyl-capped thiophene crystal based on stimulated resonance Raman scattering (SRRS) at room temperature. Under optical excitation at resonant absorption wavelengths, a platelet single crystal shows amplified spontaneous emission (ASE) with a full width at half maximum (FWHM) of ${\sim}5$ nm. This ASE intensity is increased at the polarization perpendicular to the crystal face [i.e., transverse magnetic (TM) mode]. When excitation wavelengths approach the absorption edge, the single crystal emits a pair of further narrowed emission lines (FWHM $<$ 0.5 nm) due to a transition into the SRRS regime. The intensity of the SRRS line at 1455 cm-1 is selectively increased at the polarization parallel to the crystal face [i.e., transverse electric (TE) mode]. On the other hand, the SRRS line at 1596 cm-1 is propagated in the TM mode. This polarization-dependent SRRS phenomenon is related to the coherent molecular vibrations in the uniaxially oriented single crystal.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-01-15
著者
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Yanagi Hisao
Faculty Of Engineering Kobe University
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Kobayashi Shunsuke
Photonics Research Institute National Institute Of Advanced Industrial Science And Technology(aist)
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Sakata Isao
Graduate School Of Science And Technology Kobe University
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Yanagi Hisao
Faculty of Engineering, Kobe University, Rokkodai, Nada-ku, Kobe 657-8501, Japan
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Hotta Shu
Faculty of Textile Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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Kobayashi Shunsuke
Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
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Yoshiki Atsutoshi
Graduate School of Science and Technology, Kobe University, Rokkodai, Nada-ku, Kobe 657-8501, Japan
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