Optical and mechanical mode tuning in an optomechanical crystal with light-induced thermal effects
| Autor: | Navarro-Urrios, D., Gomis-Bresco, J., Capuj, N. E., Alzina, F., Griol, A., Puerto, D., Martínez, A., Sotomayor-Torres, C. M. |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Journal of Applied Physics 116, 093506 (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/1.4894623 |
| Popis: | We report on the modification of the optical and mechanical properties of a silicon 1D optomechanical crystal cavity due to thermo-optic effects in a high phonon/photon population regime. The cavity heats up due to light absorption in a way that shifts the optical modes towards longer wavelengths and the mechanical modes to lower frequencies. By combining the experimental optical results with finite-difference time-domain simulations we establish a direct relation between the observed wavelength drift and the actual effective temperature increase of the cavity. By assuming that the Young's modulus decreases accordingly to the temperature increase, we find a good agreement between the mechanical mode drift predicted using a finite element method and the experimental one. Comment: 16 pages, 5 figures |
| Databáze: | arXiv |
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