Search Results - "Hark Hoe Tan"
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1
Liquid crystal based nonlinear fishnet metamaterials
Published in Applied physics letters (19-03-2012)“…We study experimentally the nonlinear properties of fishnet metamaterials infiltrated with nematic liquid crystals and find that moderate laser powers result…”
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2
Twinning Superlattice Formation in GaAs Nanowires
Published in ACS nano (24-09-2013)“…Semiconductor nanowires have proven a versatile platform for the realization of novel structures unachievable by traditional planar epitaxy techniques. Among…”
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3
Lasing from InP Nanowire Photonic Crystals on InP Substrate
Published in Advanced optical materials (01-02-2021)“…2D photonic crystal (PhC) lasing from an InP nanowire array still attached to the InP substrate is demonstrated for the first time. The undoped wurtzite InP…”
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4
The role of intersubband optical transitions on the electrical properties of InGaAs/GaAs quantum dot solar cells
Published in Progress in photovoltaics (01-06-2013)“…ABSTRACT We report on an experimental study of the intersubband optical response of an In0.5Ga0.5As/GaAs quantum dot solar cell (QDSC). By calculating the…”
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5
Large Square Resonator Laser With Quasi-Single-Mode Operation
Published in IEEE photonics technology letters (15-03-2009)“…A large square resonator with a size of 8.3 mum can support many resonant modes, including whispering gallery modes. The inclusion of trenches at judicious…”
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6
Spatially dense integration of micron-scale devices from multiple materials on a single chip via transfer-printing
Published in Optical materials express (01-10-2021)“…The heterogeneous integration of devices from multiple material platforms onto a single chip is demonstrated using a transfer-printing (TP) technique. Serial…”
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7
Infrared upconversion imaging in nonlinear metasurfaces
Published in Advanced photonics (01-05-2021)“…Infrared imaging is a crucial technique in a multitude of applications, including night vision, autonomous vehicle navigation, optical tomography, and food…”
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8
Plasmonic quantum dot solar cells for enhanced infrared response
Published in Applied physics letters (05-03-2012)“…Enhanced near infrared photoresponse in plasmonic InGaAs/GaAs quantum dot solar cells (QDSC) is demonstrated. Long wavelength light absorption in the…”
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9
Quantitative dopant distributions in GaAs nanowires using atom probe tomography
Published in Ultramicroscopy (01-09-2013)“…Controllable doping of semiconductor nanowires is critical to realize their proposed applications, however precise and reliable characterization of dopant…”
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10
Polarity driven simultaneous growth of free-standing and lateral GaAsP epitaxial nanowires on GaAs (001) substrate
Published in Applied physics letters (25-11-2013)“…Simultaneous growth of ⟨111⟩B free-standing and ±[110] lateral GaAsP epitaxial nanowires on GaAs (001) substrates were observed and investigated by electron…”
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11
Coupling Analysis of GaAs-Based Microdisk Lasers With Different External Claddings
Published in Journal of lightwave technology (15-11-2009)“…In this paper, we analyze the coupling of light from a GaAs microdisk laser into a waveguide. Starting from an air cladding, we examine several configurations…”
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12
Optically pumped room-temperature GaAs nanowire lasers
Published in Nature photonics (01-12-2013)“…Near-infrared lasers are important for optical data communication, spectroscopy and medical diagnosis. Semiconductor nanowires offer the possibility of…”
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13
Identifying carbon as the source of visible single-photon emission from hexagonal boron nitride
Published in Nature materials (01-03-2021)“…Single-photon emitters (SPEs) in hexagonal boron nitride (hBN) have garnered increasing attention over the last few years due to their superior optical…”
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14
Exploiting defects in TiO2 inverse opal for enhanced photoelectrochemical water splitting
Published in Optics express (21-01-2019)“…In this work, we report on defects generation in TiO2 inverse opal (IO) nanostructures by electrochemical reduction in order to increase photocatalytic…”
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15
An avalanche-and-surge robust ultrawide-bandgap heterojunction for power electronics
Published in Nature communications (25-07-2023)“…Avalanche and surge robustness involve fundamental carrier dynamics under high electric field and current density. They are also prerequisites of any power…”
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16
Nonlinear Generation of Vector Beams From AlGaAs Nanoantennas
Published in Nano letters (09-11-2016)“…The quest for nanoscale light sources with designer radiation patterns and polarization has motivated the development of nanoantennas that interact strongly…”
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17
In-Plane Coupling of Light From InP-Based Photonic Crystal Band-Edge Lasers Into Single-Mode Waveguides
Published in IEEE journal of quantum electronics (01-04-2007)“…In this paper, we analyze the coupling of light from photonic-crystal band-edge lasers into single-mode waveguides. Both active and passive devices lie in the…”
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18
Design and Room-Temperature Operation of GaAs/AlGaAs Multiple Quantum Well Nanowire Lasers
Published in Nano letters (10-08-2016)“…We present the design and room-temperature lasing characteristics of single nanowires containing coaxial GaAs/AlGaAs multiple quantum well (MQW) active…”
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19
Mode Profiling of Semiconductor Nanowire Lasers
Published in Nano letters (12-08-2015)“…We experimentally determine the lasing mode(s) in optically pumped semiconductor nanowire lasers. The spatially resolved and angle-resolved far-field emission…”
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20
Review on III-V Semiconductor Single Nanowire-Based Room Temperature Infrared Photodetectors
Published in Materials (19-03-2020)“…Recently, III-V semiconductor nanowires have been widely explored as promising candidates for high-performance photodetectors due to their one-dimensional…”
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