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arXiv · 1508.06970

Efficient telecom to visible wavelength conversion in doubly resonant GaP microdisks

David P. Lake·Matthew Mitchell·Harishankar Jayakumar·Laís Fujii dos Santos·Davor Curic·Paul E. Barclay
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Abstract

Resonant second harmonic generation between 1550 nm and 775 nm with outside efficiency $> 4.4\times10^{-4}\, \text{mW}^{-1}$ is demonstrated in a gallium phosphide microdisk cavity supporting high-$Q$ modes at visible ($Q \sim 10^4$) and infrared ($Q \sim 10^5$) wavelengths. The double resonance condition was satisfied through intracavity photothermal temperature tuning using $\sim 360\,μ$W of 1550 nm light input to a fiber taper and resonantly coupled to the microdisk. Above this pump power efficiency was observed to decrease. The observed behavior is consistent with a simple model for thermal tuning of the double resonance condition.

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David P. Lake, Matthew Mitchell, Harishankar Jayakumar, Laís Fujii dos Santos, Davor Curic, Paul E. Barclay. 2016-01-12. Efficient telecom to visible wavelength conversion in doubly resonant GaP microdisks. https://doi.org/10.1063/1.4940242

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