NDLI: Study on signal crystal photo-elastic modulator based on lithium niobate piezoelectric and photo-elastic effect

Content Provider	IEEE Xplore Digital Library
Author	Dong-e Zhao You-hua Chen Zhi-bin Wang Yuan-yuan Chen Li-fu Wang Rui Zhang
Copyright Year	2012
Description	Author affiliation: Key Laboratory of Instrumentation Science and Dynamic Measurement, North University of China, Taiyuan 030051, China (Dong-e Zhao; You-hua Chen; Zhi-bin Wang; Yuan-yuan Chen; Li-fu Wang; Rui Zhang)
Abstract	In order to overcome the disadvantage of Kemp-type photo-elastic modulator such as low modulation efficiency, strict match size, bulky et al., we proposed a photo-elastic modulate mode which use LiNbO3 crystal piezoelectric properties to produce the effect of the photo-elastic. According to the theory of piezoelectric vibration and Crystal optics principle, we analyzed the crystal orientation dependence of physical properties, and derived the relations of displacement and retardation amplitudes over voltage amplitude, then, the cut-type and the optical path was been optimized. The device was designed with dimensions 41 mm×7.7 mm× 17.1 mm in x-, y- and z-direction, 0°cutting angle(x-cut), z-axis for the optical path and electrodes on the xz-surfaces offers basic modulation frequencies at 73.71kHz corresponding to the longitudinal oscillations in x- direction. Finally, the correlation experimental equipment was built for the experimental verification; the result shows that: the voltage amplitude to achieve a half-wave retardation amplitude is only ∼1.6 V for 633nm wavelength, the modulation voltage reduced ∼4 times Compared with the LiTaO3 signal crystal photo-elastic modulator whose cutting-type didn't been optimized . The SCPEM will have larger dynamic modulation range and lower modulation power dissipation; in addition, the light damage threshold of this SCPEM will be high, and modulation frequency can be further improved till hundreds of kHz or several MHz. It has important application prospect in the field of super-laser pulse modulation, super-speed interference modulation and so on.
Starting Page	223
Ending Page	228
File Size	1113069
Page Count	6
File Format	PDF
ISBN	9781467348140
DOI	10.1109/SPAWDA.2012.6464076
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-11-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vibrations Couplings Voltage measurement Tensile stress Photo-elastic modulator Lithium niobate Modulation Crystals Piezoelectric Effect Cutting-Type Lithium Niobate Single crystal
Content Type	Text
Resource Type	Article

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