Journal
OPTIK
Volume 124, Issue 13, Pages 1656-1659Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2012.05.003
Keywords
Phase modulate; Color centers; KTP crystal
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Funding
- National Natural Science Foundation of China [60890200, 10976017]
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The femtosecond laser-induced phase modulation based on ICTP crystal is demonstrated. The phase modulation in femtosecond laser irradiated area is deduced through Drude model and color centers model, and the phase shift was also measured by cyclic radial shearing interferometer. As a result, a phase modulator with 2 pi phase shift is achieved using a 2.5-mm-thick KTP crystal and femtosecond laser pulses, and the spatial distribution of phase shift was also given. Such approach will be of great potential values for optical cross-connect switching, laser beam steering, low-cost electro-optic sensor, adaptive optics, coherent beam combination. Crown Copyright (C) 2012 Published by Elsevier GmbH. All rights reserved.
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