Interferometric technique for the measurement of photonic band structure in colloidal crystals

Title:Interferometric technique for the measurement of photonic band structure in colloidal crystals
Journal:Optics Letters
Coden:OPLED
Issue:Vol. 20, No. 14
Issue Date:15 July 1995
Pages:1571-1573
Author:I. Inanc Tarhan , Martin P. Zinkin , George H. Watson
Address:Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716

Abstract: Under suitable conditions polystyrene microsphere colloids form photonic crystals capable of diffracting visible light, analogous to x-ray diffraction from atomic crystal planes. The lattice spacings of these crystals can be tailored to satisfy the Bragg condition along a certain direction for a particular desired wavelength. A modified Mach-Zehnder interferometer has been developed for accurately measuring relative phase shifts of light propagating in photonic crystals to determine the dispersion resulting from photonic band structure near the band edges.

(Copyright) 1995 Optical Society of America
Rct Date:Received January 11, 1995
PACS:Type: M-Method. Year: 95. Class nos. 07.60.Ly
Country:US-United States
Keywords:Number: 06. COLLOIDS; DISPERSION RELATIONS; PHASE SHIFT; VISIBLE RADIATION; BAND STRUCTURE; MACH-ZEHNDER INTERFEROMETER