Výsledky vyhledávání - "Arumugam, Sri Ranjini"

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Tapered ultra-high Numerical Aperture optical fiber tip for Nitrogen Vacancy ensembles based endoscope in a fluidic environment

Autor: Duan, Dewen, Kavatamane, Vinaya Kumar, Arumugam, Sri Ranjini, Tzeng, Yan-Kai, Chang, Huan-Cheng, Balasubramanian, Gopalakrishnan

Publikováno v: Appl. Phys. Lett. 116, 113701 (2020)

Fixing a diamond containing a high density of Nitrogen-Vacancy (NV) center ensembles on the apex of a multimode optical fiber (MMF) extends the applications of NV-based endoscope sensors. Replacing the normal MMF with a tapered MMF (MMF-taper) has en

Externí odkaz: http://arxiv.org/abs/1912.11286

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Efficient nitrogen-vacancy centers' fluorescence excitation and collection from micrometer-sized diamond by a tapered optical fiber

Autor: Duan, Dewen, Du, Guanxiang, Kavatamane, Vinaya Kumar, Arumugam, Sri Ranjini, Tzeng, Yan-Kai, Chang, Huan-Cheng, Balasubramanian, Gopalakrishnan

Efficiently excite nitrogen-vacancy (NV) centers in diamond and collect their fluorescence significantly benefit the fiber-optic-based NV sensors. Here, using a tapered optical fiber (TOF) tip, we significantly improve the efficiency of the laser exc

Externí odkaz: http://arxiv.org/abs/1810.03320

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Enhancing fluorescence excitation and collection from the nitrogen-vacancy center in diamond through a micro-concave mirror

Autor: Duan, Dewen, Kavatamane, Vinaya Kumar, Arumugam, Sri Ranjini, Rahane, Ganesh, Tzeng, Yan-Kai, Chang, Huan-Cheng, Sumiya, Hitoshi, Onoda, Shinobu, Isoya, Junichi, Balasubramanian, Gopalakrishnan

Publikováno v: Appl. Phys. Lett. 113, 041107 (2018)

We experimentally demonstrate a simple and robust optical fibers based method to achieve simultaneously efficient excitation and fluorescence collection from Nitrogen-Vacancy (NV) defects containing micro-crystalline diamond. We fabricate a suitable

Externí odkaz: http://arxiv.org/abs/1804.04631

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