Abstract
Continued advances in quasi-phase-matched second harmonic generation (QPM-SHG) waveguides have elicited interest in many different system applications. One of the more difficult control problems involves setting the waveguide temperature such that the phase-matching condition is satisfied at the laser wavelength. Temperature control using a temperature sensor is commonly used, but requires accurate characterization of the temperature dependence of the waveguide phasematching characteristics, and negligible drift of the phasematching properties as well as the temperature sensor and actuator thermal contacts to the waveguide.
© 1996 Optical Society of America
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