Experimental and Theoretical Studies in Optical Coherence Theory

Hiroya Sasaki, Riho Tanaka, Yasuaki Okano +4 more

The coherent control of optical phonons has been experimentally demonstrated in various physical systems. While the transient dynamics for optical phonons can be explained by phenomenological models, the coherent control experiment cannot be explained due to the quantum interference. Here, we theoretically propose the generation and detection processes of the optical phonons and experimentally confirm our theoretical model using the diamond optical phonon by the doublepump-probe type experiment.

R.W. Smith

GORDON J. TROUP, John M. R. Stone

Sergei N. Andrianov, Самарцев Виталий Владимирович, Nataliya B. Silaeva +1 more

The results of theoretical and experimental superradiance studies in a pyrene-doped biphenyl crystal are presented. The superradiance nature of photon emission under certain conditions is experimentally proved for this crystal system. Experimental data fit the theory. The influence of induced radiation and of electron-phonon coupling on optical superradiance is theoretically investigated using the nonequilibrium statistical operator method. Possible superradiance applications are discussed, including coherent nonlinear spectroscopy, coherent electromagnetic pulse generation, and superradiant echo.

Baris I. Erkmen, Jeffrey H. Shapiro

Optical coherence theory for the complex envelopes of passband fields has been concerned, almost exclusively, with correlations that are all phase insensitive, despite decades of theoretical and experimental work on the generation and applications of light with phase-sensitive correlations. This paper begins the process of remedying that deficiency, by developing coherence theory for classical scalar fields with phase-sensitive fluctuations. In particular, the Wolf equations are extended to phase-sensitive fields, paraxial free-space propagation effects are analyzed, and a normal-mode decomposition for scalar fields of arbitrary coherence is established. The extension of this theory to the field-operator description that is needed to characterize non-classical light beams is briefly discussed.

David Köhler