Spectral tuning of diamond photonic crystal slabs by deposition of a thin layer with silicon vacancy centers

0549926 - FZÚ 2022 RIV DE eng J - Článek v odborném periodiku
Fait, Jan - Varga, Marián - Hruška, Karel - Kromka, Alexander - Rezek, B. - Ondič, Lukáš
Spectral tuning of diamond photonic crystal slabs by deposition of a thin layer with silicon vacancy centers.
Nanophotonics. Roč. 10, č. 15 (2021), s. 3895-3905. ISSN 2192-8606. E-ISSN 2192-8614
Grant CEP: GA MŠMT(CZ) EF16_019/0000760; GA ČR GA19-14523S
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760; AV ČR LQ100102001
Program: Prémie Lumina quaeruntur
Institucionální podpora: RVO:68378271
Klíčová slova: leaky modes * nanocrystalline diamond * photonic crystal slab * silicon vacancy * spectral tuning
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 7.923, rok: 2021
Způsob publikování: Open access

We demonstrate a new two-step method for fabricating diamond PhC slabs with leaky modes overlapping the emission line of the silicon vacancy (SiV) centers. In the first step, the PhC structure with leaky modes blue shifted from the SiV emission line is fabricated in a nanocrystalline diamond without SiV centers. A thin layer of SiV-rich diamond is then deposited over the PhC slab so that the spectral position of the PhC leaky modes is adjusted to the emission line of the SiV centers, thereby avoiding the need for nanoscale precision of the structuring method. An intensity enhancement of the zero-phonon line of the SiV centers by a factor of nine is achieved. The color centers in the thin surface layer are beneficial for sensing applications and their properties can also be further controlled by the diamond surface chemistry. The demonstrated PhC tuning method can also be easily adapted to other optical centers and photonic structures of different types in diamond and other materials.

Trvalý link: http://hdl.handle.net/11104/0325809