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Resonant excitonic optical Stark effect in GaSe (1989)

Hirlimann, C. ; Morhange, J. F. ; Kanehisa, M. A. ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 55 (1989), S. 2307-2309

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: The time-resolved nonlinear transmission of bulk ε-GaSe has been studied in the femtosecond regime when resonantly exciting the material in the vicinity of the exciton at room temperature. Two regimes are evidenced. At early time delay, a blue shift of the exciton with no linewidth broadening can be related to optical Stark effect, while at longer time delay the usual exciton screening and band-gap renormalization due to real electronic transitions is observed. At resonance, a dependence of the Stark shift with the amplitude of the exciting field is obtained, as predicted by a simple "dressed-atom'' model.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.102046

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