Maximized vertical photoluminescence from optical material with losses employing resonant excitation and extraction of photonic crystal modes

0509209 - FZÚ 2020 RIV DE eng J - Článek v odborném periodiku
Fait, Jan - Varga, Marián - Hruška, Karel - Remeš, Zdeněk - Jurka, Vlastimil - Kromka, Alexander - Rezek, Bohuslav - Ondič, Lukáš
Maximized vertical photoluminescence from optical material with losses employing resonant excitation and extraction of photonic crystal modes.
Nanophotonics. Roč. 8, č. 6 (2019), s. 1041-1050. ISSN 2192-8606. E-ISSN 2192-8614
Grant CEP: GA MŠMT LM2015087; GA MŠMT(CZ) EF16_019/0000760; GA ČR GJ16-09692Y
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: photonic crystal slab * leaky modes * nanocrystalline diamond * photoluminescence centers * light extraction
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 7.491, rok: 2019
Způsob publikování: Open access

Optical losses of a host material together with the total internal reflection phenomenon can significantly reduce photoluminescence external quantum efficiency of embedded light-emitters. This is not only the case for light emitting color centers in thin layers of nanocrystalline diamond, but also for Si nanocrystals in SiO2 matrices and for some types of perovskite materials. Here, we show that a significant boost (more than 100-fold enhancement) of the directional light emission efficiency from light-emitters in diamond can be achieved by using 2D photonic crystal slabs to extract the light emission into vertical direction (resonant extraction) and at the same time to couple the excitation beam into the structure. We have further shown that this so-called resonant extraction and excitation scheme provides the highest enhancement when the overlap between the electric field distribution of extraction leaky mode and the region of the excited light-emitters is maximized.

Trvalý link: http://hdl.handle.net/11104/0299961