Optical and Ferroelectric Properties of KxNa1−xBa2Nb5O15
作者:
Archibald W. Smith,
Gerald Burns,
D. F. O'Kane,
期刊:
Journal of Applied Physics
(AIP Available online 1971)
卷期:
Volume 42,
issue 1
页码: 250-255
ISSN:0021-8979
年代: 1971
DOI:10.1063/1.1659576
出版商: AIP
数据来源: AIP
摘要:
The ferroelectric tungsten—bronze system KxNa1−xBa2Nb5O15is studied particularly in the regionx=0.7–0.9 where the crystals remain tetragonal down to at least 77°K. These crystals should have many applications in the quantum electronics field. The temperature and wavelength dependence of the two indices of refraction are reported as well as the temperature dependence of the linear electro‐optic constant and the nonlinear optical effect (second‐harmonic generation). These quantities are discussed in terms of a model that treats these ferroelectrics as biased paraelectrics, the biasing field being supplied by the spontaneous polarization. The agreement is fairly good. To demonstrate the usefulness of these materials anx=0.8 crystal was used for the efficient intracavity harmonic generation of 0.53‐&mgr; light using a 1.06 &mgr; Nd&sngbnd;YAG laser. The same crystal was used to phase lock the laser, thus increasing the harmonic power.
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