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Toshu An on Muck Rack

Toshu An

As seen in: Nature
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Articles

An ultrafast diamond nonlinear photonic sensor - Nature Communications

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By Junjie U Guo, Takuto Ichikawa, Dwi Prananto, Toshu An, Paul Fons, Hidemi Shigekawa
| Nature Verified
Abstract The integration of light and materials technology is key to the creation of innovative sensing technologies. Sensing of electric and magnetic fields, and temperature with high spatio-temporal resolution is a critical task for the development of the next-generation of nanometer-scale quantum devices.
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Cooperative dynamic polaronic picture of diamond color centers - Nature Communications

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By Junjie U Guo, Paul Fons, Toshu An, Takuto Ichikawa, Dwi Prananto
| Nature Verified
Abstract Polarons can control carrier mobility and can also be used in the design of quantum devices. Although much effort has been directed into investigating the nature of polarons, observation of defect-related polarons is challenging due to electron-defect scattering. Here we explore the polaronic behavior of nitrogen-vacancy (NV) centers in a diamond crystal using an ultrafast pump-probe technique.
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Temperature-dependent second-harmonic generation from color centers in diamond

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By Muneaki Hase, Aizitiaili Abulikemu, Toshu An, Yuta Kainuma
| optica.org
Abstract Under infrared ultrashort pulse laser stimulation, we investigate temperature-dependent second-harmonic generation (SHG) from nitrogen-vacancy (NV)-introduced bulk diamond. The SHG intensity decreases in the temperature range of 20–300°C, due to phase mismatching caused by refractive index modification.
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