Thermal bistability-based method for real-time optimization of ultralow-threshold whispering gallery mode microlasersReport as inadecuate




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1 LKB Lhomond - Laboratoire Kastler Brossel 2 University of Xiamen Department of Physics 3 ILM - Institut Lumière Matière Villeurbanne

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.

Keywords : Microcavities Laser resonators Neodymium Thermal effects Micro-optical devices





Author: Guoping Lin - Y. Candela - O. Tillement - Zhiping Cai - V. Lefèvre-Seguin - J. Hare -

Source: https://hal.archives-ouvertes.fr/



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