Temperature stabilization of optofluidic photonic crystal cavities

Karnutsch, Christian; Smith, Cameron L. C.; Graham, Alexandra; Tomljenovic-Hanic, Snjezana; McPhedran, Ross; Eggleton, Benjamin J.; O’Faolain, Liam; Krauss, Thomas F.; Xiao, Sanshui; Mortensen, N. Asger
June 2009
Applied Physics Letters;6/8/2009, Vol. 94 Issue 23, p231114
Academic Journal
We present a principle for the temperature stabilization of photonic crystal (PhC) cavities based on optofluidics. We introduce an analytic method enabling a specific mode of a cavity to be made wavelength insensitive to changes in ambient temperature. Using this analysis, we experimentally demonstrate a PhC cavity with a quality factor of Q≈15 000 that exhibits a temperature-independent resonance. Temperature-stable cavities constitute a major building block in the development of a large suite of applications from high-sensitivity sensor systems for chemical and biomedical applications to microlasers, optical filters, and switches.


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