Optical Heterodyned Coherent Brillouin Spectroscopy (OHD-BIKES) Using Continuous-Wave (cw) Dye Lasers
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概要
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Steady-state coherent Brillouin spectroscopy using continuous wave(cw) lasers was demonstrated. Use of cw dye lasers and optically heterodyned detection, Brillouin-induced Kerr effect spectroscopy (cw-OHD-BIKES) was shown to have higher resolution power than conventional linear spectroscopy and pulsed-laser BIKES. The linewidth of the spectrum (FWHM 93 MHz in CS2) was limited by the stability of the dye lasers. Besides the Brillouin signals, coherent Rayleigh (quasi-elastic) spectrum was also observed in C6H6 and C6H5Cl. Compared to CARS-type spectroscopy, the cw-BIKES does not require the phase-matching condition and the spectrum can be observed without being masked by elastic Rayleigh scattering, so it might be useful for the study of low-energy excitations in anisotropic media, such as crystals.
- 1989-07-20
著者
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Abe Kohji
Department Of Applied Physics And Chemistry The University Of Electro-communications
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Higuchi Masahiko
Department Of Physics Faculty Of Science Shinshu University
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Shigenari Takeshi
Department O Engineering Physics The University Of Electro-communications
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Shigenari Takeshi
Department of Applied Physics and Chemistry, University of Electro-Communications, Chofu-shi, Tokyo 182
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Haga Taketomo
Department of Applied Physics and Chemistry, University of Electro-Communications, Chofu-shi, Tokyo 182
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Abe Kohji
Department of Applied Physics and Chemistry, University of Electro-Communications, Chofu-shi, Tokyo 182
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