Abstract
The temperature dependence of the beat frequency and polarization
azimuth of fiber-guiding laser diode pumped Nd3+:YAG
microchip lasers emitting orthogonal linear polarization at two
frequencies is investigated, and we found a resemblance to the features
that result from the application of mechanical force. The
experimental observations are well described by the cavity model, which
indicates that temperature change induces weak phase anisotropy in
addition to the original phase anisotropy with general mutually
inclined axes of anisotropy. With a servo control to keep the beat
frequency constant, the beat and central laser frequencies are
simultaneously stabilized to within ±0.1 MHz and ±0.35 GHz,
respectively.
© 1999 Optical Society of America
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