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Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Dec;74(6 Pt 1):061705. Epub 2006 Dec 26.

Enhanced photonic band edge laser emission in a cholesteric liquid crystal resonator.

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  • 1College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816, USA.


A highly efficient photonic band edge dye-doped cholesteric liquid crystal (CLC) laser is demonstrated. By sandwiching an active CLC cell within a resonator consisting of two passive CLC reflectors, the lasing efficiency is dramatically enhanced. Theoretical analysis using the improved 4x4 transfer matrix and scattering matrix shows that the band edge laser mode can be supported by the external CLC resonator and its optimal output can be achieved by a relatively thin active CLC layer and thin passive CLC reflectors. Theoretical analysis agrees well with the experimental results.

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