Local thermal resonance control of GaInP photonic crystal membrane cavities using ambient gas cooling
| Abstract | We perform spatially dependent tuning of a GaInP photonic crystal cavityusing a continuous wave violet laser. Local tuning is obtained by laserheating of the photonic crystal membrane. The cavity resonance shift ismeasured for different pump positions and for two ambient gases: heliumand nitrogen. We find that the width of the temperature profile inducedin the membrane depends strongly on the thermal conductivity of theambient gas. For He gas a narrow spatial width of the temperatureprofile of 2.8 um is predicted and verified in experiment. |
|---|---|
| URL | |
| Authors | J. Lian, E. Yüce, S. Sokolov, A. {De Rossi}, S. Combrié, G. Lehoucq, A. P. Mosk |
| Year of publication | 2015 |
| Date published | 04/2015 |
| Journal | Appl. Phys. Lett. |
| Volume | 106 |
| Pages | 171113: 1-4 |
| Keywords | CROW, gas cooling, heat diffusion, Photonic crystal cavity, thermaltuning |