Multiphoton absorption in direct gap sol
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S. S. Mitra; A. Vaidyanathan
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Article
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1981
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John Wiley and Sons
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English
β 611 KB
## Abstract The two photon absorption coefficient for several alkali halides and zincblende type semiconductors has been calculated by models developed by Keldysh, Braunstein and Basov. It is shown that the Keldysh formula is closely related to Braunstein's for allowedβallowed transitions, while Ba