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12 September 2005 Nonlinear optical tuning in a 2-D silicon photonic crystal
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Abstract
The real (Kerr) and imaginary (two photon absorption) parts of a third order optical nonlinearity are used to tune the long (1.6μm) and short (1.3μm) wavelength band edges of a stop gap in a two-dimensional silicon photonic crystal. The reflectance of the probe beam reveals information about the rise and fall times of the switching. More detailed investigations show the different time response of reflectance for different optical modes excited by the pump beam. We present a model based on simple "pertubation" formalism that can explain how any mode of photonic crystals is affected by general, weak refractive index pertubations.
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Stefan L. Schweizer, Ralf Boris Wehrspohn, Hong-Wee Tan, and Henry M. van Driel "Nonlinear optical tuning in a 2-D silicon photonic crystal", Proc. SPIE 5926, Tuning the Optical Response of Photonic Bandgap Structures II, 59260C (12 September 2005); https://doi.org/10.1117/12.616985
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