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arxiv: 1503.01923 · v3 · pith:F5FWJHCBnew · submitted 2015-03-06 · ⚛️ physics.optics · cond-mat.mes-hall

Local thermal resonance control of GaInP photonic crystal membrane cavities using ambient gas cooling

Sergei Sokolov (1) , Jin Lian (1) , Emre Y\"uce (1) , Sylvain Combri\'e (2) , Gaelle Lehoucq (2) , Alfredo De Rossi (2) , Allard P. Mosk (1) ((1) Complex Photonic Systems (COPS) , MESA+ Institute for Nanotechnology
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University of Twente Enschede The Netherlands (2) Thales Research & Technology Palaiseau France)
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classification ⚛️ physics.optics cond-mat.mes-hall
keywords ambientcrystalmembranephotoniccavitygainplaserlocal
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We perform spatially dependent tuning of a GaInP photonic crystal cavity using a continuous wave violet laser. Local tuning is obtained by laser heating of the photonic crystal membrane. The cavity resonance shift is measured for different pump positions and for two ambient gases: helium and nitrogen. We find that the width of the temperature profile induced in the membrane depends strongly on the thermal conductivity of the ambient gas. For He gas a narrow spatial width of the temperature profile of 2.8 um is predicted and verified in experiment.

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