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Optical and mechanical mode tuning in an optomechanical crystal with light-induced thermal effects

AutorNavarro-Urrios, D. ; Gomis-Bresco, J. ; Capuj, N.; Alzina, Francesc ; Griol, A.; Puerto, D. ; Martínez, Alejandro; Sotomayor Torres, C. M.
Fecha de publicación2014
EditorAmerican Institute of Physics
CitaciónJournal of Applied Physics 116(9): 093506 (2014)
ResumenWe 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.
DescripciónUnder the terms of the Creative Commons Attribution (CC BY) license to their work.
Versión del editorhttp://dx.doi.org/10.1063/1.4894623
Identificadoresdoi: 10.1063/1.4894623
issn: 0021-8979
e-issn: 1089-7550
Aparece en las colecciones: (CIN2) Artículos
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