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Optical phase shifting with acousto-optic devices
Author(s) -
Enbang Li,
Jianquan Yao,
Dao-Yin Yu,
Jiangtao Xi,
J.F. Chicharo
Publication year - 2005
Publication title -
optics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.30.000189
Subject(s) - optics , phase shift module , collimated light , polarization (electrochemistry) , phase modulation , phase (matter) , phased array optics , materials science , physics , phased array , insertion loss , computer science , laser , phase noise , telecommunications , chemistry , quantum mechanics , antenna (radio)
A novel optical phase-shifting method based on a well-known acousto-optic interaction is proposed. By using a pair of acousto-optic modulators (AOMs) and properly aligning them, we construct an optical phase shifter that can directly control the phase of a collimated beam. The proposed phase shifter is insensitive to the polarization of the incident beam when polarization-insensitive AOMs are used, and no calibration is necessary. The proposed approach is confirmed with experimental results.

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