Laser induced gratings in CdS |
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| Authors: | H Kalt VG Lyssenko R Renner C Klingshirn |
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| Institution: | Physikalisches Institut der Universität, Robert-Mayer-Str. 2-4, D-6ooo Frankfurt am Main, Germany FR |
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| Abstract: | The diffraction from laser-induced gratings is observed in CdS at low temperature in the spectral region of the absorption edge. The excitation intensity is varied from about 100 W/cm2 to 1 MW/cm2. The reasons for the formation of gratings are a broadening of the excitonic absorption band, a new resonance due to two polariton transitions to the biexciton and the formation of an electron-hole plasma with increasing excitation intensities. |
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