Influence of index contrast in two dimensional photonic crystal lasers

Jørgensen, Mette Marie; Petersen, Sidsel Rübner; Christiansen, Mads Brøkner; Buß, Thomas; Smith, Cameron L. C.; Kristensen, Anders
June 2010
Applied Physics Letters;6/7/2010, Vol. 96 Issue 23, p231115
Academic Journal
The influence of index contrast variations for obtaining single-mode operation and low threshold in dye doped polymer two dimensional photonic crystal (PhC) lasers is investigated. We consider lasers made from Pyrromethene 597 doped Ormocore imprinted with a rectangular lattice PhC having a cavity in the middle of the crystal structure. We demonstrate that the index contrast, neff,high/neff,low, is an essential parameter for achieving low threshold, and we identify a trade-off between low threshold and single-mode operation.


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