Dynamical density matrix theory of multiphoton transitions in semiconductors
A dynamical theory of multiphoton transitions in semiconductors is developed using a density matrix approach. It is shown that, in dipole approximation, these transitions require a mixed parity of the basis stales and that band-diagonal coupling's of the electromagnetic field to Bloch electrons have to be included. The general theory is outlined using the simple, but solvable model of a diatomic tight-binding chain. Possible extensions and applications of the approach are discussed.
WOS:000072667600029
1998
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Swiss Fed Inst Technol, Dept Phys, IMO, CH-1015 Lausanne, Switzerland. Selbmann, PE, Swiss Fed Inst Technol, Dept Phys, IMO, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: ZD262
Cited Reference Count: 15
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