A theoretical and experimental investigation is made of the feasibility of wavefront reversal by four-wave interaction in a medium exhibiting Raman nonlinearity. Theoretical dependences of the reflection coefficient of the four-wave mixer on the gain increment, phase detuning, and pump asymmetry parameter are obtained for the case of plane waves. In experiments using a ruby laser and quasiplane waves the maximum reflection coefficient of the nonlinear mirror was 0.5%, which agreed with the theoretical estimate. An experimental investigation was made of the wavefront reversal quality, and possible methods of improving this are discussed.A theoretical and experimental investigation is made of the feasibility of wavefront reversal by four-wave interaction in a medium exhibiting Raman nonlinearity. Theoretical dependences of the reflection coefficient of the four-wave mixer on the gain increment, phase detuning, and pump asymmetry parameter are obtained for the case of plane waves. In experiments using a ruby laser and quasiplane waves the maximum reflection coefficient of the nonlinear mirror was 0.5%, which agreed with the theoretical estimate. An experimental investigation was made of the wavefront reversal quality, and possible methods of improving this are discussed.

Soviet Journal of Quantum ElectronicsFeb 28, 19823 citations

Nonlinear fiber loop mirror with optical feedback

Chao‐Xiang Shi

Optics CommunicationsApr 1, 199417 citations

Nonlinear Optics

Avijit Lahiri

Elsevier eBooksJan 1, 20163 citations

Coherent manipulation of the Raman-induced gratings in atomic media

Vasily G. Arkhipkin, S. A. Myslivets

We consider dynamically controllable periodic structures (gratings), resulting from Raman interaction of a weak probe field with a standing-wave pump and a second control laser field in four-level atomic media of $N$ type. The gratings under study are induced due to periodic spatial modulation of the Raman gain in a standing pump field and fundamentally differ from the ones based on electromagnetically induced transparency. We show that spectral and transmission properties of these gratings can be controlled with the help of an additional weak field (control field) by varying its intensity or frequency. Small variations of the control field intensity can change the system from opaque to transparent and vice versa and this structure can operate as an all-optical transistor. Such a structure can also be used as a tunable nonlinear mirror with amplification.We consider dynamically controllable periodic structures (gratings), resulting from Raman interaction of a weak probe field with a standing-wave pump and a second control laser field in four-level atomic media of $N$ type. The gratings under study are induced due to periodic spatial modulation of the Raman gain in a standing pump field and fundamentally differ from the ones based on electromagnetically induced transparency. We show that spectral and transmission properties of these gratings can be controlled with the help of an additional weak field (control field) by varying its intensity or frequency. Small variations of the control field intensity can change the system from opaque to transparent and vice versa and this structure can operate as an all-optical transistor. Such a structure can also be used as a tunable nonlinear mirror with amplification.

arXiv:1511.08306Physical Review AJan 8, 201619 citations

Relationship between stimulated fluorescence and stimulated resonance Raman scattering of dyes in a resonator

A. Lau, Kurt Lenz, P. P. Kircheva +3 more

An investigation was made of the visibility of stimulated Raman lines under conditions of molecular resonance. A cell containing the medium under study was placed inside a resonator whose parameters were varied by changing the reflection coefficients of the mirrors or altering the length. The observed deterioration in the visibility of the Raman lines when the resonator Q factor was increased and its length was decreased could be explained qualitatively by a decrease in the nonlinear transmission of the dye for the pump radiation.An investigation was made of the visibility of stimulated Raman lines under conditions of molecular resonance. A cell containing the medium under study was placed inside a resonator whose parameters were varied by changing the reflection coefficients of the mirrors or altering the length. The observed deterioration in the visibility of the Raman lines when the resonator Q factor was increased and its length was decreased could be explained qualitatively by a decrease in the nonlinear transmission of the dye for the pump radiation.

Soviet Journal of Quantum ElectronicsDec 31, 19792 citations

Nonlinear Optics

Wolfgang Demtröder

Springer eBooksJan 1, 20140 citations

N

type. The gratings under study are induced due to periodic spatial modulation of the Raman gain in a standing pump field and fundamentally differ from the ones based on electromagnetically induced transparency. We show that spectral and transmission properties of these gratings can be controlled with the help of an additional weak field (control field) by varying its intensity or frequency. Small variations of the control field intensity can change the system from opaque to transparent and vice versa and this structure can operate as an all-optical transistor. Such a structure can also be used as a tunable nonlinear mirror with amplification.