Enhancement of nonlinear absorption of polystyrene (PS) was investigated using 3D PS photonic crystals (PCs) with Z-scan technique. The Z-scan experiment was carried out at 532 nm in the picosecond (ps) regime. The transmittance of the PC was found to get modified because of the nonlinear absorption of PS particularly when 532 nm is near the photonic stop band (PSB) edge of PC. Calculations show that the field gets enhanced by 1.4 times the input field intensity within the crystal when the 532 nm wavelength falls at the PSB edge while keeping the crystal at an angle of 35°. © 2012 Elsevier B.V. All rights reserved.

B M Krishna Mariserla

Department of Physics

IIT Jodhpur

K.S. Alee

B. Ashok

D.N. Rao

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Photonics and Nanostructures - Fundamentals and Applications

Experimental verification of enhanced electromagnetic field intensities at the photonic stop band edge of 3D polystyrene photonic crystals using Z-Scan technique

Journal	Photonics and Nanostructures - Fundamentals and Applications
ISSN	15694410