Resonance Raman Scattering in CdS and ZnO by Tunable Dye Laser
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概要
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Second-order Raman effect has been investigated in CdS and ZnO at liguid He temperature by using a tunable exciting light source. An organic dye laser has been employed which is pumped by a nitrogen laser and produces continuously wavelength-variable light pulses of ∼10 kW peak power. Measured frequency dependence of the scattering cross-section near the resonance region is compared with existing theory. The result indicates that the dominant scattering mechanism in this region is successive scattering of the virtually created A exciton by two longitudinal optical phonons. With high density excitation (∼0.6 MW/cm^_2), the intensity ratio of the Raman line to the incident laser light has been found to decrease remarkably under the nearly resonant condition in CdS. This effect is attributed to the light absorption induced by intense electronic excitation of the material.
- 社団法人日本物理学会の論文
- 1972-11-05
著者
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Kushida Takashi
The Institute For Solid State Physics The University Of Tokyo:department Of Physics Osaka University
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Oka Yasuo
The Institute For Solid State Physics The University Of Tokyo
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Kushida Takashi
The Institute For Solid State Physics The University Of Tokyo
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