Abstract
In this paper, we study the dark decay dynamic behavior of field-induced photorefractive (PR) grating in a Mn:Fe:KTN crystal under different conditions. The spatial distribution and temporal evolutions of field-induced PR grating dark decay are visualized in situ and monitored quantitatively by means of digital holographic microscopy. Subsequently, the dark decay time of phase grating can be achieved according to the dynamic behavior, which can be improved drastically by a writing field and is insensitive to the grating period. The mechanism of enhanced lifetime of grating is interpreted by the potential well model. The external field enhances the growth of polar nanoregions, forming a potential well that binds the carriers, ultimately prolonging the dark decay time. This work provides an effect way for enhancing lifetime of PR grating, which can be very useful for a variety of applications, including PR storage and holographic optical elements.
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 callMore From: Journal of Materials Science: Materials in Electronics
Disclaimer: 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.
