TITLE

Ultrafast three-dimensional tunable photonic crystal

AUTHOR(S)
Xiaoyong Hu; Qi Zhang; Yuanhao Liu; Bingying Cheng; Daozhong Zhang
PUB. DATE
September 2003
SOURCE
Applied Physics Letters;9/29/2003, Vol. 83 Issue 13, p2518
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We demonstrate a continuously tunable photonic crystal with several picoseconds response, which is fabricated through a self-assembly formation method of polystyrene spheres. The large optical nonlinearity originates from the delocalization of the conjugated π-electron along polymer chains. The pump and probe scheme is adopted to measure the transmission changes based on the optical Kerr effect. The dynamic shift of the photonic band gap is studied. It is found that the band gap shifts about 13 nm when the input peak intensity is 40.4 GW/cm[sup 2], which is in agreement with the theoretical predictions. © 2003 American Institute of Physics.
ACCESSION #
10894483

 

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