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arXiv · 1509.09085

Thermal bistability-based method for real-time optimization of ultralow-threshold whispering gallery mode microlasers

Guoping Lin·Y. Candela·O. Tillement·Zhiping Cai·V. Lefèvre-Seguin·J. Hare
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Abstract

A method based on thermal bistability for ultralow-threshold microlaser optimization is demonstrated. When sweeping the pump laser frequency across a pump resonance, the dynamic thermal bistability slows down the power variation. The resulting line shape modification enables a real-time monitoring of the laser characteristic. We demonstrate this method for a functionalized microsphere exhibiting a submicrowatt laser threshold. This approach is confirmed by comparing the results with a step-by-step recording in quasi-static thermal conditions.

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Guoping Lin, Y. Candela, O. Tillement, Zhiping Cai, V. Lefèvre-Seguin, J. Hare. 2015-09-30. Thermal bistability-based method for real-time optimization of ultralow-threshold whispering gallery mode microlasers. https://doi.org/10.1364/ol.37.005193

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