Femtosecond time-resolved coherence experiments

Aleksander K. Rebane, Christophe Sigel, Mikhail A. Drobizhev

Qi Luo, Xiangyang Yu, Zhiren Qiu +3 more

Anand T. N. Kumar

S. H. Lin, Benjamin Fain, C. Y. Yeh

We present a theory of time-resolved emission spectroscopy in the femtosecond region. It is shown that a femtosecond time-resolved emission spectrum consists of the contributions from the population and coherence of the system. Theoretical expressions for describing femtosecond time-resolved emission molecular spectra based on the use of the adiabatic approximation are derived. Detailed numerical calculations have been carried out to show the effect of the time evolution of the population and coherence on the time-resolved emission spectra.

Dai‐Sik Kim, Jagdeep Shah, Wilfried Schäfer +1 more

Abstract Recent results on femtosecond time‐integrated and time‐resolved four‐wave‐mixing experiments in intrinsic and modulation‐doped GaAs quantum wells are reported. A variety of new phenomena ranging from giant excitonic resonance for intrinsic samples, Fermi liquid behavior in modulation‐doped samples, and interesting temporal evolutions provide new insights into the physical process responsible for the coherent signals.

Hans Joachim Eichler, D. Langhans, F. Massmann