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Free‐carrier and thermal grating effects in gallium phosphide
Author(s) -
Shimura T.,
Boothroyd S. A.,
Chrostowski J.
Publication year - 1992
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650051213
Subject(s) - gallium phosphide , grating , materials science , optics , free carrier , diffraction grating , indium phosphide , optoelectronics , thermal , diffraction , gallium arsenide , physics , meteorology
We report the first observation of the simultaneous creation and competition between a free‐carrier light‐induced diffraction grating and an accompanying thermal grating in gallium phosphide. The lifetimes of the two gratings are widely different and the nonlinear index n 2 = 1 × 10 −11 cm 2 /W for the free‐carrier grating is almost an order of magnitude larger than the thermal effect of a 100‐psec mode‐locked pulse. © 1992 John Wiley & Sons, Inc.