Topic
Phase conjugation
About: Phase conjugation is a research topic. Over the lifetime, 3694 publications have been published within this topic receiving 49099 citations.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this article, a holographic grating was placed in front of the SBS mirror and the first-order beam reflected by the grating to pump the Brillouin medium.
Abstract: Stimulated Brillouin scattering (SBS) of unmodified XeCl laser radiation in n‐hexane was investigated for building phase‐conjugating mirrors. It was found that the SBS mirror reflectivity could be improved by setting a holographic grating in front of the SBS mirror and by using the first order beam reflected by the grating to pump the Brillouin medium. Maximum energy and power reflectivities of 45% and 80%, respectively, were measured. The SBS mirror energy reflectivity was reduced by 45% by removing the grating. The phase conjugation fidelity of the backscattered radiation was close to one, with or without the grating.
11 citations
••
TL;DR: The dynamic properties of two-photon pumped blue lasing (similar to 470 nm) in the solution of an organic chromophore [2-acetyl-6-(dimethylamino)naphthalene], excited by similar to 160-fs laser pul...
Abstract: The dynamic properties of two-photon pumped blue lasing (similar to 470 nm) in the solution of an organic chromophore [2-acetyl-6-(dimethylamino)naphthalene], excited by similar to 160-fs laser pul ...
11 citations
••
TL;DR: In this article, the influence of self-focusing on wave-front reconstruction (conjugation) by stimulated scattering is discussed, and the diffraction efficiency of the dynamic holograms for stimulated scattering has been measured.
Abstract: Wave-front reconstruction (conjugation) by stimulated scattering has been shown experimentally to occur in the presence of two processes: (1) a directed scattered wave forming in the volume near the focus of a lens; (2) stimulated scattering amplification and diffraction from the amplifying amplitude hologram near the entrance window of the cell. Stimulated scattering saturation in the volume, playing the role of a dynamic hologram, leads to the breakdown of the reconstruction (conjugation) effect. The diffraction efficiency of the dynamic holograms for stimulated scattering has been measured. The influence of self-focusing on wave-front reconstruction (conjugation) by stimulated scattering is discussed.
11 citations
••
01 Jan 1987TL;DR: In this article, the photorefractive effect is introduced and the relevant physical properties of photore-fractive materials in applications such as optical storage and signal processing, two-and four-wave mixing and dynamic holography are reviewed.
Abstract: This paper gives an introduction to the photorefractive effect. The relevant physical properties of photorefractive materials in applications such as optical storage and signal processing, two- and four-wave mixing and dynamic holography are reviewed. It is shown that materials which show both large electrooptic effects and large photoconductivity, as e.g. KNbO3:Fe2+, are best suited for applications in real-time optical processing.
11 citations
••
TL;DR: A robust OPC simulation technique is reported that can account for long optical path lengths by sequentially inverting the electromagnetic fields and the ideal efficiency of OPC refocusing of light through scattering medium can be accurately determined.
Abstract: The phenomenon of Optical Phase Conjugation (OPC) can be rigorously simulated using the pseudospectral time-domain (PSTD) technique. However, with finite computational memory, it is infeasible to simulate light propagating long optical paths. We report a robust OPC simulation technique that can account for long optical path lengths by sequentially inverting the electromagnetic fields. Specifically, the ideal efficiency of OPC refocusing of light through scattering medium can be accurately determined.
11 citations