TY - JOUR
T1 - Low-Threshold Vertical Lasing from InP Nanowire Embedded in Cat's Eye Antenna
AU - Ren, Fang-Fang
AU - Xu, Weizong
AU - Ye, Jiandong
AU - Tan, Hoe
AU - Jagadish, Chennupati
PY - 2019
Y1 - 2019
N2 - Semiconductor nanowires have undergone a significant expansion and become a highly active research area within the nanoscience community. Nanoscopic light source is one of the most promising applications, miniaturizing the footprint of future optoelectronic devices. Besides, since semiconductor nanowires can provide both gain medium and photonic cavity, they are very promising as compact photonic lasers, but still suffering from high lasing threshold and poor directionality. As will be shown in this work, InP nanowire lasers with cats eye (CE) antenna were designed and fabricated. As compared to bare nanowire lasers, the emission efficiency and profile are largely improved in following aspects: (i) The far-field distribution shows a narrower emission angle, which indicates that the integrated CE antenna strongly governs the propagation direction of the nanowire emission. (ii) The degree of polarization is increased from 0.5 to 0.7, which is a direct result of the polarization sensitivity of the integrated split-gap CE antenna due to the cylindrical symmetry breaking. (iii) The internal quantum efficiency is enhanced, which verifies the distinct localization of optical energy densities in the nanowire. (iv) The lasing threshold is dramatically reduced, which is due to the surface plasmon-assisted confinement of luminescence within the InP gain medium
AB - Semiconductor nanowires have undergone a significant expansion and become a highly active research area within the nanoscience community. Nanoscopic light source is one of the most promising applications, miniaturizing the footprint of future optoelectronic devices. Besides, since semiconductor nanowires can provide both gain medium and photonic cavity, they are very promising as compact photonic lasers, but still suffering from high lasing threshold and poor directionality. As will be shown in this work, InP nanowire lasers with cats eye (CE) antenna were designed and fabricated. As compared to bare nanowire lasers, the emission efficiency and profile are largely improved in following aspects: (i) The far-field distribution shows a narrower emission angle, which indicates that the integrated CE antenna strongly governs the propagation direction of the nanowire emission. (ii) The degree of polarization is increased from 0.5 to 0.7, which is a direct result of the polarization sensitivity of the integrated split-gap CE antenna due to the cylindrical symmetry breaking. (iii) The internal quantum efficiency is enhanced, which verifies the distinct localization of optical energy densities in the nanowire. (iv) The lasing threshold is dramatically reduced, which is due to the surface plasmon-assisted confinement of luminescence within the InP gain medium
U2 - 10.1109/ICIPRM.2019.8819231
DO - 10.1109/ICIPRM.2019.8819231
M3 - Meeting Abstract
SP - 1
JO - Electron selective contact for high efficiency core-shell nanowire solar cell
JF - Electron selective contact for high efficiency core-shell nanowire solar cell
T2 - 2019 Compound Semiconductor Week
Y2 - 1 January 2019
ER -