Abstract
Tuning of the dielectric permittivity spectra of congruent LiNbO3:Mg single crystals in an external optical pump is investigated at room temperature by means of terahertz time-domain spectroscopy. Application of the optical pump leads to an appreciable tuning of the permittivity, which reaches up to 2.3%. We find that the change of refractive index has a linear relationship on scale with the applied light power. These findings are attributed to the internal space charge field of photorefraction caused by the excited free carriers.
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 callMore From: Journal of Infrared, Millimeter, and Terahertz Waves
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.
