Zobrazeno 1 - 10
of 156
pro vyhledávání: '"Neisei Hayashi"'
Autor:
Kazuhiro Agatsuma, Kohei Suzuki, Takuya Sugimoto, Kazuki Matsuo, Kenjiro Takahashi, Eiji Sato, Neisei Hayashi, Katsuhiro Ishii, Yoshitaka Mori
Publikováno v:
Nuclear Fusion, Vol 64, Iss 9, p 096035 (2024)
For a commercial laser inertial fusion energy reactor, a highly repetitive operation in which many fuel pellets must be illuminated by laser spots. One of the most efficient ways to achieve this is to control the laser pointing by following fluctuati
Externí odkaz:
https://doaj.org/article/3f20169566f44871bc67345bdc69a541
Publikováno v:
IEEE Photonics Journal, Vol 8, Iss 3, Pp 1-7 (2016)
We experimentally demonstrate the observation of backward (i.e., opposite of the direction of the pump) guided-acoustic-wave Brillouin scattering (GAWBS) using the pump-probe technique and investigate the spectral dependence on the pump-probe light p
Externí odkaz:
https://doaj.org/article/c4bfc67f2ea443338f38035a2c5d90b9
Publikováno v:
IEEE Photonics Journal, Vol 8, Iss 3, Pp 1-7 (2016)
Exploiting the slope of the Brillouin gain spectrum, we develop a new configuration of Brillouin optical correlation-domain reflectometry, which can measure strain (or temperature) and optical loss distributions simultaneously with a high sampling ra
Externí odkaz:
https://doaj.org/article/78147eb4ecd043bc9ead3c9c1eea4c2c
Publikováno v:
IEEE Photonics Journal, Vol 7, Iss 1, Pp 1-7 (2015)
To perform distributed strain and temperature measurement, we have recently developed simplified Brillouin optical correlation-domain reflectometry (S-BOCDR), in which the light that is Fresnel reflected at the ends of the fiber under test (FUT) is u
Externí odkaz:
https://doaj.org/article/33a28a120c1543fcafe8b1b502647bdf
Publikováno v:
IEEE Photonics Journal, Vol 6, Iss 5, Pp 1-7 (2014)
We implement the strain and temperature sensors based on multimode interference in perfluorinated (PF) graded-index (GI) plastic optical fibers, and investigate their sensing performance at 1300 nm. We obtain strain and temperature sensitivities of -
Externí odkaz:
https://doaj.org/article/a85c57655b87431f9bc184d1eb720b4e
Publikováno v:
IEEE Photonics Journal, Vol 6, Iss 5, Pp 1-7 (2014)
We develop a simple and cost-efficient configuration of Brillouin optical correlation-domain reflectometry (BOCDR), the setup of which does not include an additional reference path used in standard BOCDR systems. The Fresnel-reflected light from an o
Externí odkaz:
https://doaj.org/article/c70f401fb7b540198bfb8d43a0f83a53
Publikováno v:
IEEE Photonics Journal, Vol 6, Iss 6, Pp 1-8 (2014)
We developed an alternative configuration of simplified Brillouin optical correlation-domain reflectometry, which can overcome the drawbacks of the original configuration. This system uses, as reference light, the light that is Fresnel reflected at a
Externí odkaz:
https://doaj.org/article/4f73fbb5fc0d4fe08c33299751f9ecc4
Publikováno v:
IEEE Photonics Journal, Vol 6, Iss 3, Pp 1-7 (2014)
We study the propagation behavior of the polymer optical fiber (POF) fuse at a power density up to several tens of $\hbox{kW/cm}^{2}$ (corresponding to subwatt power). The propagation velocity is raised in proportion to the power density, reaching 41
Externí odkaz:
https://doaj.org/article/c73b9e30d8d745ed86ac88b1aa22eac5
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 69:4496-4506
Laser scanners have emerged as a powerful instrument for high-precision 3-D geometry measurement. However, such attractive laser scanners have failed to address to drop of receiving power due to laser’s interaction with the surface of the object un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f154201ea01964f66e65fc42132db747
https://doi.org/10.1109/tim.2019.2946429
https://doi.org/10.1109/tim.2019.2946429
Publikováno v:
Optics and Photonics for Advanced Dimensional Metrology.
Amplitude-modulated continuous-wave laser scanner with focusing optics can realize extremely high-precision 3D measurement. Since amplitude-modulated continuous-wave scheme employs periodical modulation, the longitudinal resolution and the maximum un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1fe0e0b1ad9961d67bd33b04c99a59f
https://doi.org/10.1117/12.2553482
https://doi.org/10.1117/12.2553482