Takashige Omatsu

Summary

Affiliation: Chiba University
Country: Japan

Publications

  1. pmc Using optical vortex to control the chirality of twisted metal nanostructures
    Kohei Toyoda
    Graduate School of Advanced Integration Science, Chiba University, Chiba 263 8522, Japan
    Nano Lett 12:3645-9. 2012
  2. doi request reprint Metal microneedle fabrication using twisted light with spin
    Takashige Omatsu
    Graduate School of Advanced Integration Science, Chiba University, Chiba 263 8522, Japan
    Opt Express 18:17967-73. 2010
  3. doi request reprint Tunable 2-μm optical vortex parametric oscillator
    Taximaiti Yusufu
    Graduate School of Advanced Integration Science, Chiba University, Chiba 263 8522, Japan
    Opt Express 20:23666-75. 2012
  4. doi request reprint Optical vortex pumped mid-infrared optical parametric oscillator
    Katsuhiko Miyamoto
    Graduate School of Advanced Integration Science, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Express 19:12220-6. 2011
  5. doi request reprint Power scaling of a picosecond vortex laser based on a stressed Yb-doped fiber amplifier
    Mio Koyama
    Graduate School of Advanced Integration Science, Chiba University, Inage Ku, Chiba, Japan
    Opt Express 19:994-9. 2011
  6. ncbi request reprint Transfer of light helicity to nanostructures
    Kohei Toyoda
    Graduate School of Advanced Integration Science, Chiba University, Chiba 263 8522, Japan
    Phys Rev Lett 110:143603. 2013
  7. ncbi request reprint Picosecond master-oscillator, power-amplifier system based on a mixed vanadate phase conjugate bounce amplifier
    Naoki Shiba
    Department of Information and Image Sciences, Chiba University, Chiba, Japan
    Opt Express 16:16382-9. 2008
  8. doi request reprint Nanosecond vortex laser pulses with millijoule pulse energies from a Yb-doped double-clad fiber power amplifier
    Mio Koyama
    Graduate School of Advanced Integration Science, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Express 19:14420-5. 2011
  9. pmc Picosecond optical vortex pulse illumination forms a monocrystalline silicon needle
    Fuyuto Takahashi
    Graduate School of Advanced Integration Science, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Sci Rep 6:21738. 2016
  10. ncbi request reprint High power picosecond vortex laser based on a large-mode-area fiber amplifier
    Yuichi Tanaka
    Graduate School of Advanced Integration Science, Chiba University, Chiba, 263 8522, Japan
    Opt Express 17:14362-6. 2009

Collaborators

  • Katsuhiko Miyamoto
  • Yu Tokizane
  • Keisaku Yamane
  • Kohei Toyoda
  • Mio Koyama
  • Masahito Okida
  • Fuyuto Takahashi
  • Ryuji Morita
  • Yuichi Tanaka
  • Mizuki Watabe
  • Akram M Mahjoub
  • Taximaiti Yusufu
  • Akiko Suganami
  • Tetsuya Hirose
  • Kinji Imaizumi
  • Naoki Shiba
  • Hirofumi Hidai
  • Guzhaliayi Juman
  • David K Ferry
  • Michio Kida
  • Shun Takizawa
  • Yuichi Ochiai
  • Jonathan P Bird
  • Takuto Abe
  • Noboyuki Aoki
  • Takahiro Ouchi
  • Koji Ishibashi
  • Yuhei Iso
  • Alec Nicol
  • Hiroshi Kawahira
  • Yutaka Tamura
  • Hiroshi Shirasawa
  • Tomoyuki Madono
  • Hisahiro Matsubara
  • Nobuyuki Aoki
  • Yasunori Akutsu
  • Akira Aoki
  • Masaki Yamada
  • Hideki Hayashi
  • Shigetoshi Okazaki
  • Yutaka Muraki
  • Taro Toyota
  • Kengo Saito
  • Yuichi Watanabe
  • Norihisa Kobayashi
  • Kazuki Nakamura
  • Kouji Nawata
  • Yasuhito Morimoto
  • Kenji Furuki

Detail Information

Publications14

  1. pmc Using optical vortex to control the chirality of twisted metal nanostructures
    Kohei Toyoda
    Graduate School of Advanced Integration Science, Chiba University, Chiba 263 8522, Japan
    Nano Lett 12:3645-9. 2012
    ..g., atomic force microscopes), chemical reactions on plasmonic nanostructures, and planar metamaterials...
  2. doi request reprint Metal microneedle fabrication using twisted light with spin
    Takashige Omatsu
    Graduate School of Advanced Integration Science, Chiba University, Chiba 263 8522, Japan
    Opt Express 18:17967-73. 2010
    ..3 microm. We also demonstrated the fabrication of a two-dimensional 5 x 6 microneedle array. The needles were uniformly well shaped with an average length and tip diameter of about 10 and 0.5 microm, respectively...
  3. doi request reprint Tunable 2-μm optical vortex parametric oscillator
    Taximaiti Yusufu
    Graduate School of Advanced Integration Science, Chiba University, Chiba 263 8522, Japan
    Opt Express 20:23666-75. 2012
    ..8 mJ, which corresponds to a slope efficiency of 15%. The topological charges of the signal and idler output were investigated using a shearing interferometric technique employing a low-spatial-frequency transmission grating...
  4. doi request reprint Optical vortex pumped mid-infrared optical parametric oscillator
    Katsuhiko Miyamoto
    Graduate School of Advanced Integration Science, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Express 19:12220-6. 2011
    ..24-mJ vortex pulses with a topological charge of 1 can be created. The topological charges of the mid-infrared vortex pulses are observed by an interferometric technique in combination with second-harmonic frequency conversion...
  5. doi request reprint Power scaling of a picosecond vortex laser based on a stressed Yb-doped fiber amplifier
    Mio Koyama
    Graduate School of Advanced Integration Science, Chiba University, Inage Ku, Chiba, Japan
    Opt Express 19:994-9. 2011
    ..Frequency doubling of the vortex output was demonstrated using a nonlinear PPSLT crystal. A second-harmonic output power of up to 1.5 W was measured at a fundamental power of 11.2 W...
  6. ncbi request reprint Transfer of light helicity to nanostructures
    Kohei Toyoda
    Graduate School of Advanced Integration Science, Chiba University, Chiba 263 8522, Japan
    Phys Rev Lett 110:143603. 2013
    ..We also found that optical vortices with the same total angular momentum (defined as the sum of the orbital and spin angular momenta) are degenerate, and they generate nanoneedles with the same chirality and spiral frequency. ..
  7. ncbi request reprint Picosecond master-oscillator, power-amplifier system based on a mixed vanadate phase conjugate bounce amplifier
    Naoki Shiba
    Department of Information and Image Sciences, Chiba University, Chiba, Japan
    Opt Express 16:16382-9. 2008
    ..6)Y(0.4)VO(4) bounce amplifier. An average output power of 16.2 W with a peak power of 210 kW was achieved. A corresponding extraction efficiency of 23% was measured...
  8. doi request reprint Nanosecond vortex laser pulses with millijoule pulse energies from a Yb-doped double-clad fiber power amplifier
    Mio Koyama
    Graduate School of Advanced Integration Science, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Express 19:14420-5. 2011
    ..7 W. The optical-optical efficiency was measured to be 31%. The millijoule nanosecond vortex pulses will be potentially applied to novel material processing, such as metal microneedle fabrication...
  9. pmc Picosecond optical vortex pulse illumination forms a monocrystalline silicon needle
    Fuyuto Takahashi
    Graduate School of Advanced Integration Science, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Sci Rep 6:21738. 2016
    ..Such a monocrystalline silicon needle can be applied to devices in many fields, such as core-shell structures for silicon photonics and photovoltaic devices as well as nano- or microelectromechanical systems. ..
  10. ncbi request reprint High power picosecond vortex laser based on a large-mode-area fiber amplifier
    Yuichi Tanaka
    Graduate School of Advanced Integration Science, Chiba University, Chiba, 263 8522, Japan
    Opt Express 17:14362-6. 2009
    ..8.5 W picosecond output with a peak power of approximately 12.5 kW was obtained at a pump power of 29 W. 2009 Optical Society of America...
  11. pmc Light induced conch-shaped relief in an azo-polymer film
    Mizuki Watabe
    Graduate School of Advanced Integration Science, Chiba University, Chiba 263 8522, Japan
    Sci Rep 4:4281. 2014
    ..Such conch-shaped surface reliefs with chirality, in which functional chemical composites can be doped, enable new applications, such as planar chiral metamaterials, plasmonic holograms, and identification of chiral chemical composites. ..
  12. pmc GR-FET application for high-frequency detection device
    Akram M Mahjoub
    Graduate School of Advanced Integration Science, Chiba University, Chiba, 263 8522, Japan
    Nanoscale Res Lett 8:22. 2013
    ....
  13. doi request reprint Preparation and characterization of phospholipid-conjugated indocyanine green as a near-infrared probe
    Akiko Suganami
    Department of Bioinformatics, Graduate School of Medicine, Chiba University, Chiba 260 8670, Japan
    Bioorg Med Chem Lett 22:7481-5. 2012
    ..We also observed the tumor-specific biodistribution of LP-iDOPE of in vivo xenografts. These findings suggest that LP-iDOPE might be a promising tool for NIR optical imaging, photodynamic therapy, and photothermal therapy...
  14. ncbi request reprint Multicolored electrochromism in 4,4'-biphenyl dicarboxylic acid diethyl ester
    Kinji Imaizumi
    Department of Image and Materials Science, Graduate School of Advanced Integration Science, Chiba University, Chiba, 263 8522, Japan
    Phys Chem Chem Phys 13:11838-40. 2011
    ..The PCE-NiO cell achieved multi-coloration ranging from colorless to yellow and red, and also achieved high coloration efficiency and long term switching stability...