Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Yalla, Ramachandrarao"'
Publikováno v:
Journal of Nanophotonics (2024)
We experimentally demonstrate the fabrication of optical micro/nanofibers (MNFs) using chemical etching and gas-flame techniques. In the chemical etching technique, a two-step process involves 40% and 24% of hydrofluoric acid solutions for the first
Externí odkaz:
http://arxiv.org/abs/2408.01761
Publikováno v:
Opt Quant Electron 56, 1341 (2024)
We numerically report highly efficient coupling of single photons from a single dipole source (SDS) using a pair of nanostructures. The maximum coupling efficiency ({\eta}p) of 56%, into guided modes of a silica nanotip (SNT), is found when the SNT o
Externí odkaz:
http://arxiv.org/abs/2406.16097
Publikováno v:
Journal of Nanophotonics, 18, 026007 (2024)
We demonstrate the fabrication of an optical nanofiber tip (ONFT) using a two-step chemical etching technique. This technique employs 30% and 24% hydrofluoric (HF) acid for the first and second steps, respectively. In the first step, a silica single-
Externí odkaz:
http://arxiv.org/abs/2405.13627
Publikováno v:
Opt Quant Electron 56, 893 (2024)
We report numerically the efficient channeling of single photons from a single quantum emitter into guided modes of optical nanocapillary fibers (NCFs). The NCF is formed of a liquid core optical nanofiber with inner and outer diameters. We optimize
Externí odkaz:
http://arxiv.org/abs/2402.07552
Publikováno v:
J. Appl. Phys. 135, 123101 (2024)
We experimentally demonstrate the in-situ characterization of optical micro/nano fibers (MNFs).The MNF (test fiber, TF) is positioned on a microfiber (probe fiber, PF) and simulated for the scattering loss at various PF and TF diameters. The TF is fa
Externí odkaz:
http://arxiv.org/abs/2402.03400
Publikováno v:
J. Opt. 26, 065401 (2024)
We demonstrate the channeling of fluorescence photons from quantum dots (QDs) into guided modes of an optical nanofiber tip (ONFT). We deposit QDs on the ONFT using micro/nano fluidic technology. We measure the photon-counting and emission spectrum o
Externí odkaz:
http://arxiv.org/abs/2401.16891
We demonstrate a bright and polarized fiber in-line single photon source based on plasmon-enhanced emission of colloidal single quantum dots into an optical nanofiber. We show that emission properties of single quantum dots can be strongly enhanced i
Externí odkaz:
http://arxiv.org/abs/2206.13029
Autor:
Yalla, Ramachandrarao, Kojima, Y., Fukumoto, Y., Suzuki, H., Ariyada, O., Shafi, K. Muhammed, Nayak, Kali P., Hakuta, Kohzo
Publikováno v:
Appl. Phys. Lett. 120, 241102 (2022)
We experimentally demonstrate the integration of silicon-vacancy centers in nanodiamonds (SiV-NDs) with an optical nanofiber (ONF). We grow SiV-NDs on seed NDs dispersed on a quartz substrate using a microwave plasma-assisted chemical vapor depositio
Externí odkaz:
http://arxiv.org/abs/2205.01354
Publikováno v:
Appl. Phys. Lett. 120, 071108 (2022)
We demonstrate a one-sided cavity on an optical nanofiber (ONF) using a composite method. The one-sided composite cavity is created by mounting an asymmetric defect mode grating on an ONF. We design the one-sided composite cavity on an ONF to enhance
Externí odkaz:
http://arxiv.org/abs/2202.01408
Autor:
Yalla, Ramachandrarao, Hakuta, Kohzo
Publikováno v:
Appl. Phys. B 126, 187 (2020)
We report a novel approach to the design and implementation of a tunable cavity on an optical nanofiber (ONF). The key point is to create a composite photonic crystal cavity (CPCC), by combining an ONF and a chirped period defect mode grating. Using
Externí odkaz:
http://arxiv.org/abs/2007.03625