Zobrazeno 1 - 10
of 237
pro vyhledávání: '"Masatoshi Fujimoto"'
Publikováno v:
High-Power Laser Materials Processing: Applications, Diagnostics, and Systems X.
Structural monitoring during laser processing has recently been achieved with optical coherence tomography (OCT). Although a couple of industrial OCT monitoring systems have appeared, most are based on spectral-domain OCT, which uses an 800-nm band l
Autor:
Takayoshi Kuga, Hiroshi Satozono, Kazutaka Tomari, Koei Yamamoto, Kazuhiro Takahashi, Takashi Yasuda, Masatoshi Fujimoto, Koichiro Akiyama
Publikováno v:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV.
We developed a stable, compact, terahertz attenuated total reflected (ATR) spectrometer using an integrated prism, which unifies a terahertz emitter, a terahertz detector, and an ATR prism. Because the prism confines terahertz wave propagation within
Publikováno v:
Light: Advanced Manufacturing. 3:1
Autor:
Takashi Sakamoto, Masahiro Ueno, Mahiro Yamada, Shogo Yamagishi, Yuzo Sasaki, Masatoshi Fujimoto, Tadashi Sakamoto, Shogo Yagi, Seiji Toyoda, Kobayashi Junya
Publikováno v:
IEICE Transactions on Electronics. :250-256
Autor:
Masahiro Ueno, Shogo Yagi, Joji Yamaguchi, Mahiro Yamada, Yuzo Sasaki, Tadashi Sakamoto, Koei Yamamoto, Tadayuki Imai, Seiji Toyoda, Masatoshi Fujimoto, Takashi Sakamoto, Eiichi Sugai
Publikováno v:
SPIE Proceedings.
Using light-beam scanning technology based on a potassium tantalate niobate (KTa1-xNbxO3, KTN) single crystal, we constructed a wavelength-swept light source for industrial applications. The KTN crystal is placed in an external cavity as an electro-o
Publikováno v:
SPIE Proceedings.
Computed radiography (CR), which is one of the most useful methods for dental imaging and nondestructive testing, uses a phosphor imaging plate (IP) because it is flexible, reusable, and inexpensive. Conventional IP scanners utilize a galvanometer or
Autor:
Seiji Toyoda, Mahiro Yamada, Tadashi Sakamoto, Masahiro Ueno, Eiichi Sugai, Tadayuki Imai, Masatoshi Fujimoto, Takashi Sakamoto, Joji Yamaguchi, Shogo Yagi, Yuzo Sasaki, Koei Yamamoto
Publikováno v:
SPIE Proceedings.
We have developed a highly stable electro-optic KTa1-xNbxO3 (KTN) deflector by enhancing electron transportation through KTN crystal. The amount of current is increased with 405-nm light irradiation to rapidly generate a stable refractive-index chang
Publikováno v:
Analytical Sciences. 28:445-450
A low-energy, high-repetition-rate picosecond laser (40 µJ, 20 kHz, 258 nm) was used for multiphoton ionization (MPI) in gas chromatography/time-of-flight mass spectrometry to quantitatively determine dioxins (DXNs) and polycyclic aromatic hydrocarb
Publikováno v:
Measurement Science and Technology. 13:1698-1709
We present an imaging technique to visualize instantaneous intensity distributions of propagating femtosecond optical pulses by making use of the optical Kerr effect (OKE), which is called femtosecond time-resolved optical polarigraphy (FTOP). By mod
Publikováno v:
SPIE Proceedings.
We have developed a wavelength-swept laser source with ultrahigh phase stability. Potassium tantalate niobate (KTa 1- x Nb x O 3 , KTN) single crystal was employed as an electro-optic deflector for a high-speed wavelength sweep in the laser cavity. A