RT Journal Article
T1 Near-UV optical-cavities n Ga_2O_3 nanowires
A1 Alonso Orts, Manuel
A1 Chilla, Gerwin
A1 Hötzel, Rudolfo
A1 Nogales Díaz, Emilio
A1 San Juan, José M.
A1 Nó, Maria L.
A1 Eickhoff, Martin
A1 Méndez Martín, Bianchi
AB In this Letter, we report optical confinement in the near-ultraviolet (near-UV) range in Ga2O3 nanowires (NWs) by distributed Bragg reflector (DBR) nanopatterned cavities. High-contrast DBRs, which act as the end mirrors of the cavities of the desired length, are designed and fabricated by focused ion beam etching. The resonant modes of the cavities are analyzed by micro-photoluminescence measurements, analytical models, and simulations, which show very good agreement between each other. Experimental reflectivities up to 50% are obtained over the 350-410 nm region for the resonances in this wavelength range. Therefore, Ga2O3 NW optical cavities are shown as good candidates for single-material-based near-UV light emitters.
PB Optical Society of America
SN 0146-9592
YR 2021
FD 2021-01-15
LK https://hdl.handle.net/20.500.14352/7821
UL https://hdl.handle.net/20.500.14352/7821
LA eng
NO ©2021 Optical Society of AmericaThis work has been supported by MINECO projects M-ERA.NET PCIN-2017-106 and RTI2018-097195-BI00. M. A-O acknowledges financial support from MICINN (FPU contract No. FPU15/01982), including finance for his short stay at Bremen University. This work made use of the FIB facilities from the SGIKER of the UPV/EHU. The authors also thank the Air Force Office of Scientific Research (Grant: FA8655-20-1-7013).
NO Ministerio de Economía y Competitividad (MINECO) / M.ERA-Net
NO Ministerio de Innovación y  Ciencia (MICINN)
DS Docta Complutense
RD 19 may 2024