Abstract

Microcavity resonance is demonstrated in nanocrystal quantum dot fluorescence in a one-dimensional (1D) chiral photonic bandgap cholesteric-liquid crystal host under cw excitation. The resonance demonstrates coupling between quantum dot fluorescence and the cholesteric microcavity. Observed at a band edge of a photonic stop band, this resonance has circular polarization due to microcavity chirality with 4.9 times intensity enhancement in comparison with polarization of the opposite handedness. The circular-polarization dissymmetry factor $g_e$ of this resonance is $\sim 1.3$. We also demonstrate photon antibunching of a single quantum dot in a similar glassy cholesteric microcavity. These results are important in cholesteric-laser research, in which so far only dyes were used, as well as for room-temperature single-photon source applications.

©2012 Optical Society of America

Hybrid fluorescent cholesteric materials with controllable light emission containing CdSe/ZnS quantum dots stabilized by liquid crystalline block copolymer

Miron A. Bugakov, Pavel S. Samokhvalov, Valery P. Shibaev, and Natalia I. Boiko
Opt. Mater. Express 11(7) 1842-1851 (2021)

Continuous wave mirrorless lasing in cholesteric liquid crystals with a pitch gradient across the cell gap

A. Muñoz, M. E. McConney, T. Kosa, P. Luchette, L. Sukhomlinova, T. J. White, T. J. Bunning, and B. Taheri
Opt. Lett. 37(14) 2904-2906 (2012)

Enhanced optical nonlinearity near the photonic bandgap edges of a cholesteric liquid crystal

Jisoo Hwang, N. Y. Ha, H. J. Chang, Byoungchoo Park, and J. W. Wu
Opt. Lett. 29(22) 2644-2646 (2004)

Polarization control of quantum dot emission by chiral photonic crystal slabs

Sergey V. Lobanov, Thomas Weiss, Nikolay A. Gippius, Sergei G. Tikhodeev, Vladimir D. Kulakovskii, Kuniaki Konishi, and Makoto Kuwata-Gonokami
Opt. Lett. 40(7) 1528-1531 (2015)

Photonic crystal waveguides intersection for resonant quantum dot optical spectroscopy detection

Xiaohong Song, Stefan Declair, Torsten Meier, Artur Zrenner, and Jens Förstner
Opt. Express 20(13) 14130-14136 (2012)