Dr. Takashi Fujii Profile

Dr. Takashi Fujii

at Central Research Inst of Electric Power Industry

SPIE Involvement:

Conference Program Committee | Author

Publications (23)

Proceedings Article | 7 October 2014 Paper

Paper

Stand-off detection and classification of CBRNe using a Lidar system based on a high power femtosecond laser

Jun Izawa, Takeshi Yokozawa, Takao Kurata, Akihiro Yoshida, Yasushi Mastunaga, Toshihiro Somekawa, Shuzo Eto, Naohiro Manago, Hideyuki Horisawa, Shigeru Yamaguchi, Takashi Fujii, Hiroaki Kuze

Proceedings Volume 9253, 92530C (2014) https://doi.org/10.1117/12.2067005

KEYWORDS: Aerosols, Laser induced breakdown spectroscopy, Femtosecond phenomena, Cesium, LIDAR, Weapons of mass destruction, Signal detection, Classification systems, High power lasers, Spectroscopy

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Proceedings Article | 19 November 2012 Paper

Paper

Evaluation of water vapor Raman lidar signals from clouds

Tetsuo Fukuchi, Takashi Fujii

Proceedings Volume 8526, 852610 (2012) https://doi.org/10.1117/12.977293

KEYWORDS: Clouds, Raman scattering, LIDAR, Signal attenuation, Raman spectroscopy, Laser scattering, Signal detection, Multiple scattering, Mie scattering, Nitrogen

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Proceedings Article | 19 November 2012 Paper

Paper

Meteorological observation with Doppler and Raman lidars and comparison with numerical weather simulations

Hidetoshi Tamura, Naoto Kihara, Takashi Fujii, Tetsuo Fukuchi, Koji Wada, Hiromaru Hirakuchi

Proceedings Volume 8526, 852611 (2012) https://doi.org/10.1117/12.977360

KEYWORDS: LIDAR, Doppler effect, Raman spectroscopy, Computer simulations, Data modeling, Environmental sensing, Meteorology, Atmospheric modeling, Systems modeling, Numerical simulations

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Proceedings Article | 8 June 2006 Paper

Paper

Generation of MeV proton with 30 mJ laser energy by optimizing focusing spot using deformable mirror

Takuya Nayuki, Takashi Fujii, Yuji Oishi, Kei Takano, Xiaofang Wang, Alexander Andreev, Koshichi Nemoto, Ken-ichi Ueda

Proceedings Volume 6018, 60180F (2006) https://doi.org/10.1117/12.669278

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Proceedings Article | 22 May 2006 Paper

Paper

Dependence on laser intensity and pulse duration in proton acceleration using ultrafast laser pulse

K. Nemoto, Y. Oishi, X. Wang, T. Nayuki, T. Fujii, A. Andreev

Proceedings Volume 6256, 625608 (2006) https://doi.org/10.1117/12.682246

KEYWORDS: Pulsed laser operation, Ions, Plasma, Laser energy, Deformable mirrors, Ultrafast lasers, Laser applications, X-rays, Thin films, Adaptive optics

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Proceedings Article | 12 December 2003 Paper

Paper

High-energy ions accelerated by 60-fs laser

Koshichi Nemoto, Takashi Fujii, Yuji Oishi, Takuya Nayuki

Proceedings Volume 5228, (2003) https://doi.org/10.1117/12.536883

KEYWORDS: Ions, Pulsed laser operation, Laser energy, Spectroscopy, Carbon, Optical filters, Copper, Laser irradiation, Image filtering, Femtosecond phenomena

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Proceedings Article | 21 March 2003 Paper

Paper

Simultaneous Raman and Mie-Rayleigh lidar measurement in the lower troposphere

Tetsuo Fukuchi, Takashi Fujii, Takuya Nayuki, Koshichi Nemoto

Proceedings Volume 4893, (2003) https://doi.org/10.1117/12.466077

KEYWORDS: Raman scattering, LIDAR, Raman spectroscopy, Backscatter, Scattering, Absorption, Profiling, Aerosols, Laser scattering, Signal detection

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Proceedings Article | 21 March 2003 Paper

Paper

Profiling of SO2, NO2, and O3 in the lower troposphere by multiwavelength differential absorption lidar

Takashi Fujii, Tetsuo Fukuchi, Takuya Nayuki, Hiroshi Hayami, Koshichi Nemoto, Nobuo Takeuchi

Proceedings Volume 4893, (2003) https://doi.org/10.1117/12.466157

KEYWORDS: NOx, Dye lasers, Profiling, Temperature metrology, LIDAR, Humidity, Absorption, Troposphere, Atmospheric monitoring, Laser energy

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SPIE Journal Paper | 1 January 2003

Differential absorption lidar system for simultaneous measurement of O₃and NO₂: system development and measurement error estimation

Tetsuo Fukuchi, Takuya Nayuki, Nianwen Cao, Takashi Fujii, Koshichi Nemoto, Hideto Mori, Nobuo Takeuchi

OE, Vol. 42, Issue 01, (January 2003) https://doi.org/10.1117/12.10.1117/1.1525274

KEYWORDS: Error analysis, Dye lasers, Backscatter, Absorption, Signal attenuation, LIDAR, Nd:YAG lasers, Crystals, Laser crystals, Second-harmonic generation

Proceedings Article | 9 January 2002 Paper

Paper

Simultaneous profiling of O3 and NO2 in the lower troposphere by multiwavelength differential absorption lidar

Tetsuo Fukuchi, Takuya Nayuki, Nianwen Cao, Takashi Fujii, Koshichi Nemoto, Hideto Mori, Nobuo Takeuchi

Proceedings Volume 4484, (2002) https://doi.org/10.1117/12.452770

KEYWORDS: NOx, Error analysis, Backscatter, Absorption, Signal attenuation, Dye lasers, LIDAR, Nd:YAG lasers, Profiling, Troposphere

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SPIE Journal Paper | 1 January 2002

Estimation of differential absorption lidar measurement error for NO2 profiling in the lower troposphere

Nianwen Cao, Takashi Fujii, Tetsuo Fukuchi, Naohiko Goto, Koshichi Nemoto, Nobuo Takeuchi

OE, Vol. 41, Issue 01, (January 2002) https://doi.org/10.1117/12.10.1117/1.1419191

KEYWORDS: Error analysis, Aerosols, Backscatter, Absorption, LIDAR, Atmospheric particles, Mass attenuation coefficient, Signal attenuation, Troposphere, Profiling

SPIE Journal Paper | 1 September 2001

Tropospheric O3 measurement by simultaneous differential absorption lidar and null profiling and comparison with sonde measurement

Tetsuo Fukuchi, Takashi Fujii, Nianwen Cao, Koshichi Nemoto, Nobuo Takeuchi

OE, Vol. 40, Issue 09, (September 2001) https://doi.org/10.1117/12.10.1117/1.1396839

KEYWORDS: Error analysis, Optical filtering, Absorption, Backscatter, LIDAR, Signal attenuation, Dye lasers, Profiling, Receivers, Telescopes

SPIE Journal Paper | 1 March 2001

Evaluation of differential absorption lidar (DIAL) measurement error by simultaneous DIAL and null profiling

Tetsuo Fukuchi, Takashi Fujii, Naohiko Goto, Koshichi Nemoto, Nobuo Takeuchi

OE, Vol. 40, Issue 03, (March 2001) https://doi.org/10.1117/12.10.1117/1.1347999

KEYWORDS: Error analysis, Absorption, LIDAR, Dye lasers, Receivers, Mirrors, Telescopes, Transmitters, Second-harmonic generation, Profiling

Proceedings Article | 13 February 2001 Paper

Paper

NO2 vertical concentration monitoring by DIAL with high accuracy

Nianwen Cao, Takashi Fujii, Tetsuo Fukuchi, Naohiko Goto, Koshichi Nemoto, Nobuo Takeuchi

Proceedings Volume 4153, (2001) https://doi.org/10.1117/12.417099

KEYWORDS: Error analysis, Aerosols, NOx, Atmospheric particles, Backscatter, Absorption, Mass attenuation coefficient, LIDAR, Signal attenuation, Dye lasers

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Proceedings Article | 13 February 2001 Paper

Paper

Tropospheric profiling of SO2 and O3 by multiwavelength DIAL

Tetsuo Fukuchi, Takashi Fujii, Naohiko Goto, Koshichi Nemoto, Nianwen Cao, Nobuo Takeuchi

Proceedings Volume 4153, (2001) https://doi.org/10.1117/12.417059

KEYWORDS: Error analysis, Absorption, Dye lasers, Optical filtering, Profiling, Backscatter, Telescopes, Aerosols, Signal attenuation, LIDAR

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Proceedings Article | 24 May 1999 Paper

Paper

Simulation of intensity profile in coordinate-transforming cavity

Koshichi Nemoto, Yuji Oishi, Tetsuo Fukuchi, Naohiko Goto, Takashi Fujii

Proceedings Volume 3611, (1999) https://doi.org/10.1117/12.349279

KEYWORDS: Mirrors, Phase conjugation, Reflection, Diffraction, Fabry–Perot interferometers, Laser resonators, Spherical lenses, Analytical research, Holograms, Resonators

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SPIE Journal Paper | 1 January 1999

Error analysis of SO2 measurement by multiwavelength differential absorption lidar

Tetsuo Fukuchi, Naohiko Goto, Takashi Fujii, Koshichi Nemoto

OE, Vol. 38, Issue 01, (January 1999) https://doi.org/10.1117/12.10.1117/1.602068

KEYWORDS: Error analysis, Ozone, Visibility, Absorption, LIDAR, Photons, Backscatter, Mass attenuation coefficient, Receivers, Atmospheric particles

Proceedings Article | 20 November 1996 Paper

Paper

Influence of fabrication precision on laser beam forming by fabricated optics

Koshichi Nemoto, Takashi Fujii, Naohiko Goto, Hideo Takino, Teruki Kobayashi, Norio Shibata, Kazuya Yamamura, Yuzo Mori

Proceedings Volume 2870, (1996) https://doi.org/10.1117/12.259944

KEYWORDS: Mirrors, Plasma, Gaussian beams, Laser beam propagation, Wavefronts, Surface finishing, Electrodes, Laser scattering, Scattering, Optical components

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Proceedings Article | 17 April 1995 Paper

Paper

Laser beam forming by fabricated aspherical mirror

Koshichi Nemoto, Takashi Fujii, Masahiro Nagano

Proceedings Volume 2375, (1995) https://doi.org/10.1117/12.206975

KEYWORDS: Mirrors, Evolutionary algorithms, Gaussian beams, Laser beam propagation, Laser systems engineering, Computer generated holography, Deformable mirrors, Image restoration, Analytical research, High power lasers

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Proceedings Article | 10 April 1995 Paper

Paper

Polarized fluorescence spectra of high-chromium-doped forsterite

Takashi Fujii, Masahiro Nagano, Koshichi Nemoto

Proceedings Volume 2379, (1995) https://doi.org/10.1117/12.206454

KEYWORDS: Luminescence, Chromium, Mirrors, Crystals, Laser crystals, Polarization, Germanium, Neodymium, Sensors, YAG lasers

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Proceedings Article | 1 June 1994 Paper

Paper

Laser beam-forming by deformable mirror

Koshichi Nemoto, Takashi Fujii, Naohiko Goto

Proceedings Volume 2119, (1994) https://doi.org/10.1117/12.172706

KEYWORDS: Mirrors, Deformable mirrors, Helium neon lasers, Optical simulations, Wavefronts, Computer generated holography, Distortion, Gaussian beams, Telescopes, CCD cameras

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SPIE Journal Paper | 1 November 1992

Development of a 10-kW solid state pulse power supply for copper vapor lasers

Takashi Fujii, Koshichi Nemoto, Rikio Ishikawa, Kazuo Hayashi, Etsuo Noda

OE, Vol. 31, Issue 11, (November 1992) https://doi.org/10.1117/12.10.1117/12.60048

KEYWORDS: Power supplies, Magnetism, Switching, Plasma, Capacitors, Solid state physics, Energy transfer, Energy efficiency, Copper vapor lasers, Solid state lasers

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Proceedings Article | 1 May 1991 Paper

Paper

Development of solid state pulse power supply for copper vapor laser

Takashi Fujii, Koshichi Nemoto, Rikio Ishikawa, Kazuo Hayashi, Etsuo Noda

Proceedings Volume 1412, (1991) https://doi.org/10.1117/12.43632

KEYWORDS: Power supplies, Magnetism, Solid state physics, Switching, Solid state lasers, Plasma, Capacitors, Solid state electronics, Copper vapor lasers, Metal vapor lasers

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Showing 5 of 23 publications

Conference Committee Involvement (7)

Lidar and Optical Remote Sensing for Environmental Monitoring XVII

2 December 2024 | Kaohsiung, Taiwan

Lidar Remote Sensing for Environmental Monitoring XVI

24 September 2018 | Honolulu, Hawaii, United States

Lidar Remote Sensing for Environmental Monitoring XV

4 April 2016 | New Delhi, India

Lidar Remote Sensing for Environmental Monitoring XIV

14 October 2014 | Beijing, China

Lidar Remote Sensing for Environmental Monitoring XIII

29 October 2012 | Kyoto, Japan

Showing 5 of 7 Conference Committees

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