Angular dependent spontaneous emission in cholesteric liquid-crystal films

Anna M. Risse; Jürgen Schmidtke

doi:10.1117/12.2506756

1 March 2019 Angular dependent spontaneous emission in cholesteric liquid-crystal films

Anna M. Risse, Jürgen Schmidtke

Proceedings Volume 10941, Emerging Liquid Crystal Technologies XIV; 109410M (2019) https://doi.org/10.1117/12.2506756
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

Due to the presence of a polarization-sensitive photonic band gap, cholesteric liquid crystals (CLCs) strongly modify the emission of fluorescent guest molecules, which makes them promising candidates for coherent or incoherent light sources with unique polarization properties. We present a systematic study of the angular dependent spontaneous emission properties of CLC films doped with a fluorescent dye. Our main findings are: (1) wavelength intervals of almost complete emission suppression due to the emergence of a polarizationinsensitive band gap at large detection angles; (2) additional band-edge resonance peaks almost completely dominating emission in certain angular ranges; and (3) striking angular and wavelength dependent polarization variations.

Citation Download Citation

Anna M. Risse and Jürgen Schmidtke "Angular dependent spontaneous emission in cholesteric liquid-crystal films", Proc. SPIE 10941, Emerging Liquid Crystal Technologies XIV, 109410M (1 March 2019); https://doi.org/10.1117/12.2506756

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