Abstract
Previous work on AlGaAs/GaAs leaky guides by Valera et al.1 showed nonlinearities in the form of both large (60% of total) and small (< 10%) decreases in output with increasing input power and showed abrupt output quenching at high inputs. Those measurements were taken at approximately 300 K with inputs of 0–50 mW at 825 nm. In the present work the output response of leaky AlGaAs/GaAs slab waveguides was characterized for inputs of 0–100 mW at 779-833 nm and temperatures of 295–405 K. Small (< 10%) nonlinearities in output were seen. These nonlinearities decreased in size with increasing temperature or decreasing wavelength. Output quenching was observed. The effect was more gradual and occurred at lower input powers when the guide was at high temperature or the input wavelength was low.
© 1995 Optical Society of America
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