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- Agency for Science, Technology and ResearchSG90 papers
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17 papers · 1 filter
Enhancing Optical Readout from Diamond AFM Tips for Quantum Nanosensing
Sumin Choi, Victor Leong, Gandhi Alagappan +1
Color centers in diamond are promising candidates for quantum nanosensing applications. The efficient collection of the optical signal is the key to achieving high sensitivity and…
Lasing action in active dielectric nanoantenna arrays
Son Tung Ha, Yuan Hsing Fu, Naresh Kumar Emani +4
Directional lasing, with a low threshold and high quality factor, in active dielectric nanoantenna arrays is demonstrated. This is achieved through a leaky resonance excited in cou…
Coupled Mode Theory of Microtoroidal Resonators with a One-dimensional Waveguide
Thi Phuc Tan Nguyen, Leonid Krivitsky, Leong Chuan Kwek
We study the transmission of light through a system consisting of an arbitrary number of microtoroidal resonators coupled to a one-dimensional (1D) waveguide. The transmission…
Measurement of infrared optical constants with visible photons
Anna Paterova, Hongzhi Yang, Chengwu An +2
We demonstrate a new scheme of infrared spectroscopy with visible light sources and detectors. The technique relies on the nonlinear interference of correlated photons, produced vi…
A Metalens with Near-Unity Numerical Aperture
Ramon Paniagua-Dominguez, Ye Feng Yu, Egor Khaidarov +8
The numerical aperture (NA) of a lens determines its ability to focus light and its resolving capability. Having a large NA is a very desirable quality for applications requiring s…
Nonlinear infrared spectroscopy free from spectral selection
Anna Paterova, Shaun Lung, Dmitry Kalashnikov +1
Infrared (IR) spectroscopy is an indispensable tool for many practical applications including material analysis and sensing. Existing IR spectroscopy techniques face challenges rel…