Gradient thermooptical effect in LiNbO3
crystals
Vlokh R., Krupych O., Kostyrko M., Netolya V., Trach I.
Institute of Physical Optics, 23 Dragomanov Str., 79005,
L’viv, Ukraine
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This paper is devoted to the studying of the influence of temperature
gradient on the refractive indexes of LiNbO3 crystals. In our
experiments, the temperature gradient was created in LiNbO3
crystals along the crystallophysical axes X and Y. The optical beam was
propagated along the Z-axis. The temperature gradient with maximum value
dT/dxk=2.25x104
K/m was induced. The distribution of induced bi-refringence was studied
by imaging polarimetry. The components of the third rank tensor that describes
the gradient thermooptical effect were calculated using experimental results.
Keywords: gradient thermooptical effect, temperature gradient,
lithium niobate, imaging polarimetry
doi 10.3116/16091833/2/3/154/2001 |
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