Abstract
Abstract The condition of the appearance of multivalued conjugate reflectivities was investigated in a real crystal by computer simulation. For this aim, we performed first the experiment to determine the intrinsic coupling strength and the phase shift of the photorefractive crystal KNbO3:Fe using both two-wave and four-wave mixing techniques. Reflectivities obtained by the experiment were compared with the theory and quantitative agreement was obtained. Using the values of the coupling strength and phase shift obtained from the experiment, the simulation study was performed. To obtain large coupling strengths and phase shift near 0°, the application of an external electric field was assumed in the simulation. In operation of moving grating technique we found the transition from singlevalued regions to multivalued regions in (K 2, K 4) space, where K 2 and K 4 are the intensity ratios of counter-pump beam to pump beam and probe beam to pump beam, respectively.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
