Abstract
The observation of double peaks of diffraction efficiency through the degenerate four-wave mixing process as a function of the biasing electric-field strength in a nematic liquid-crystal film is described. This behavior is due to the high optical nonlinearity of liquid-crystal media and the dramatic modulating effect of an ac voltage on the reorientational Freedericksz transition. The dependence of the peak occurrence on grating periods, electric fields, and optical intensities is presented. Theoretical calculations show the same characteristic behavior as do the experimental results.
Sign-in/Register to access full text options 
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.
