Temperature sensitivity of phase-matched second-harmonic generation in LiIO/sub 3

Measurements were made of the temperature dependence (between 23 and 65 degrees C) of the phase-matching angle theta /sub pm/ for type I frequency doubling of 1064-nm laser light in lithium iodate (LiIO/sub 3/). The measured value of d theta /sub pm//dT is -14.7+or-1 mu rad/ degrees C, which corresp...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 1990-08, Vol.26 (8), p.1394-1398
Main Authors: Webb, M.S., Velsko, S.P.
Format: Article
Language:English
Subjects:
Frequency conversion
Frequency measurement
Nonlinear optics
Optical frequency conversion
Optical harmonic generation
Optical sensors
Phase measurement
Temperature dependence
Temperature measurement
Temperature sensors
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Summary:Measurements were made of the temperature dependence (between 23 and 65 degrees C) of the phase-matching angle theta /sub pm/ for type I frequency doubling of 1064-nm laser light in lithium iodate (LiIO/sub 3/). The measured value of d theta /sub pm//dT is -14.7+or-1 mu rad/ degrees C, which corresponds to a thermal sensitivity beta /sub T/=0.24+or-0.02 cm/sup -1// degrees C for this process. Also calculated is a value of d theta /sub pm//dT using experimentally determined thermooptic data available in the literature. The calculated value of d theta /sub pm//dT is -31+or-18 mu rad/ degrees C using literature values of n and dn/dT for LiIO/sub 3/. The extreme sensitivity of the calculated value of d theta /sub pm//dT to small errors in the thermooptic coefficients may be the reason for this discrepancy.< >
ISSN:0018-9197
1558-1713
DOI:10.1109/3.59687