Search Results:　 1-20 of 137

1

Synergetic effects of double laser pulses for the formation of mild plasma in water: toward non-gated underwater laser-induced breakdown spectroscopy.

Sakka Tetsuo , Tamura Ayaka , Nakajima Takashi , Fukami Kazuhiro , Ogata Yukio H

… We experimentally study the dynamics of the plasma induced by the double-laser-pulse irradiation of solid target in water, and find that an appropriate choice of the pulse energies and pulse interval results in the production of an unprecedentedly mild (low-density) plasma, the emission spectra of which are very narrow even without the time-gated detection. …

The Journal of chemical physics 136(17), 2012-05-00

IR CrossRef
2

A solder bridging rework study and an experimental investigation of the TuMR magnetic head

Roajanasiri Reangroaj , Afzulpurkar Nitin , Boonsang Siridech

… The use of double laser pulses yields better results than the use of single pulses. …

IEICE Electronics Express 9(21), 1683-1694, 2012

J-STAGE CrossRef
3

Optical-Pumping Double-Nuclear-Magnetic-Resonance System with a Gifford--McMahon Cryocooler

Goto Atsushi , Ohki Shinobu , Hashi Kenjiro , Shimizu Tadashi

… We have developed a system for performing optical-pumping and double-resonance NMR of semiconductors simultaneously or sequentially. … (1) A pickup coil and tank circuits for NMR can be built in a vacuum, which excludes rf discharges and/or arcing (breakdown) occurring in conventional systems employing a helium-gas atmosphere, allowing application of the stronger and more stable rf-pulses required for broad-line double-resonance NMR. …

Jpn J Appl Phys 50(12), 126701-126701-5, 2011-12-25

The Japan Society of Applied Physics
4

3C1534 Direct production of DNA double strand break induced by two-photon absorption of 266-nm femtosecond pulses(3C Molecular genetics & Gene expression, Development & Differentation, Radiobiology & Active oxygen,The 49th Annual Meeting of the Biophysical Society of Japan)

Akamatsu Ken , Murakami Hiroshi , Yamada Hidetaka

Biophysics 51(SUPPLEMENT_1), S116, 2011-08-15

CiNii Fulltext PDF - Open Access
5

A Method of 2 Pulses Switching for Single-Phase Voltage-Double PFC Converter with Partial Switching Circuit [in Japanese]

SAKUI Masaaki , HUANG Yong , AMEI Kenji , OHJI Takahisa

… A novel 2 pulses switching method for the power factor correction (PFC) single-phase voltage-doubler converter with the partial switching circuit is presented. …

IEEJ Transactions on Industry Applications 131(6), 862-863, 2011-06-01

J-STAGE CrossRef References (5)
6

Isolated attosecond pulse generation by monocycle pumping : the use of a harmonic region with minimum dispersion

Fang Shaobo , Tanigawa Takashi , Ishikawa Kenichi L. , Karasawa Naoki , Yamashita Mikio

… The detailed theoretical investigation into the spectral phase and intrinsic dispersion of high-order harmonics generated by monocycle pumping [a 1.93 fs (T0), 580 nm (λ0), 1.7-2.0 x 10^[15] W/cm2 (I0), Gaussian-shaped pulse] showed that it is significantly important for further shortening of isolated attosecond pulses to select the spectral region that has the minimum intrinsic group-delay dispersion and higher-order dispersion in the middle region of the plateau, other than that close to the cutoff where the harmonic intensity drops rapidly. …

Journal of the Optical Society of America B: Optical Physics 28(1), 1-9, 2011-01-01

IR CrossRef
7

ESR/NMR Development of double resonance system for observation of P nuclear spin state in low concentration Si:P and ESR measurement of dynamic nuclear polarization [in Japanese]

藤井裕 , 光藤誠太郎 , 水崎隆雄他

… We constructed an ESR/NMR double-resonance system for liquid-4He temperatures in order to detect a 31P-DNP-NMR signal from lightly doped (insulator) Si:P samples. … We also found that the magnitude of the nuclear spin polarization was changed by applying NMR pulses. …

遠赤外領域開発研究 : 福井大学遠赤外領域開発研究センター研究成果報告書 13, 95-102, 2011-00-00

IR
8

Development of a Double-Pass Thomson Scattering System in the TST-2 Spherical Tokamak

HIRATSUKA Junichi , EJIRI Akira , HASEGAWA Makoto , NAGASHIMA Yoshihiko , TAKASE Yuichi , TOJO Hiroshi , YAMAGUCHI Takashi , AMBO Takanori , KAKUDA Hidetoshi , SAKAMOTO Takuya , SHINO Ryota , SONEHARA Masateru , WAKATSUKI Takuma , WATANABE Osamu

… A double-pass Thomson scattering system, in which a laser pulse makes a round trip through the plasma, was constructed. … Using the same optics and a fast detection unit, we can resolve backward and forward scattering pulses in the signal. … Because these scatterings reflect velocity distribution along different directions, electron temperature anisotropy can be estimated from the double-pass Thomson scattering system. …

Plasma and Fusion Research 6, 1202133-1202133, 2011

J-STAGE CrossRef
9

Application of the Double Pulse Nd:YAG Laser Induced Breakdown Spectroscopy to On-site Analysis of Carbon in Steel [in Japanese]

Usui Yukio , Ishida Tomoharu , Fujimoto Kyoko

… The LIBS system that consisted of double pulse Nd:YAG laser, an echell spectroscope and an ICCD detector was constructed. … The highest emission intensity of carbon 193.09 nm line was obtained in the double pulse irradiation of the laser at wavelength 1064 nm with pulse energy of 100 mJ and 2 μs delay time of double pulses. …

Tetsu-to-Hagane 97(2), 76-80, 2011

J-STAGE CrossRef
10

Mechanism of heat-modification inside a glass after irradiation with high-repetition rate femtosecond laser pulses

Shimizu Masahiro , Sakakura Masaaki , Ohnishi Masatoshi , Shimotsuma Yasuhiko , Nakaya Takayuki , Miura Kiyotaka , Hirao Kazuyuki

… Accumulation of thermal energies by highly repeated irradiation of femtosecond laser pulses inside a glass induces the heat-modification whose volume is much larger than that of the photoexcited region. … It has been proposed that the heat-modification occurs in the region in which the temperature had overcome a threshold temperature during exposure of laser pulses. …

Journal of Applied Physics 108(7), 2010-10-00

IR CrossRef
11

Control of the discharge in a bubble between a micro-gap in liquid using high-voltage double pulses [in Japanese]

SORIMACHI Shohei , KANEMARU Makoto , IBUKA Shinji , ISHII Shozo

電気学会研究会資料. PST, プラズマ研究会 2010(61), 9-14, 2010-08-11

References (8)
12

Intense Pulsed Heavy Ion Beam Technology [in Japanese]

Masugata Katsumi , Ito Hiroaki

… A double coaxial type bipolar pulse generator was developed as the power supply of the BPA. … The generator was tested with dummy load of 7.5 ohm, bipolar pulses of -138 kV, 72 ns (1st pulse) and +130 kV, 70 ns (2nd pulse) were succesively generated. …

IEEJ Transactions on Fundamentals and Materials 130(10), 879-884, 2010

J-STAGE CrossRef
13

Improving Range Resolution of a Wind Measuring Lidar with Double-pulse Transmission(WSANE 2009 (Workshop for Space, Aeronautical and Navigational Electronics))

WAKAYAMA Toshio , SAKAMAKI Hiroshi , KOTAKE Nobuki

… The proposed method uses a waveform of transmission which consists of two pulses. … Width of each pulse determines the range resolution and interval between two pulses determines the accuracy of the velocity. …

Technical report of IEICE. SANE 109(265), 183-188, 2009-10-26

CiNii Fulltext PDF - Subscription References (1)
14

Characterization of atmospheric glow microdischarges using fast high-voltage double-pulses [in Japanese]

IGARASHI Koichi , KIKUCHI Jun , YOSHIDA Naoaki , IBUKA Shinji , ISHII Shozo

電気学会研究会資料. PST, プラズマ研究会 2009(73), 29-34, 2009-08-09

References (9)
15

Improvement in measurement accuracy of double-pulse Brillouin optical time-domain reflectometry with signal processing technology [in Japanese]

OISHI Kazushi , MATSUURA Satoshi , ADACHI Shoji , KOYAMADA Yahei

光ファイバのブリュアン散乱信号を用いて高精度な歪み/温度分布測定を実現するためには、ブリュアンスペクトラムのピーク周波数を精度よく検出することが重要である。距離分解能向上を目的として提案されたダブルパルスBOTDR(DP-BOTDR)は前方パルスと後方パルスによる後方散乱光が干渉することによって、スペクトラムは周期的変化成分を有する。信号処理技術を用いてこの周期的変化成分を抽出することで、距離分解 …

Technical report of IEICE. OFT 109(59), 75-78, 2009-05-21

CiNii Fulltext PDF - Subscription References (3) Cited by (1)
16

Temporal Integration of the Luminous Energy of the Double Pulses of Light

TAKIURA Takayuki

Tohoku psychologica folia 67, 32-48, 2009-03-31

IR
17

AC Phase Controlled Testing Apparatus Superimposed with Doubles Pulses and its Application [in Japanese]

KANDO Masaaki , INABA Taro

… Therefore AC phase controlled testing apparatus superimposed with high voltage double pulses has been developed in order to investigate effects of overvoltages to insulating materials and surge protection devices. … The developed device will control the double pulses at any phase angle with phase control circuits consisting of RC integrated circuits controlled by the triggering circuit of zero-cross AC power source. …

IEEJ Transactions on Power and Energy 129(3), 447-452, 2009-03-01

J-STAGE CrossRef References (14)
18

All-Optical Demultiplexing from 160 to 40/80 Gb/s Using Mach-Zehnder Switches Based on Intersubband Transition of InGaAs/AlAsSb Coupled Double Quantum Wells

AKIMOTO Ryoichi , CONG Guangwei , NAGASE Masanori , MOZUME Teruo , TSUCHIDA Hidemi , HASAMA Toshifumi , ISHIKAWA Hiroshi

… We demonstrated all-optical demultiplexing of 160-Gb/s signal to 40- and 80-Gb/s by a Mach-Zehnder Interferometric all-optical switch, where the picosecond cross-phase modulation (XPM) induced by intersubband excitation in InGaAs/AlAsSb coupled double quantum wells is utilized. … A bi-directional pump configuration, i.e., two control pulses are injected from both sides of a waveguide chip simultaneously, increases a nonlinear phase shift twice in comparison with injection of single pump beam with forward- and backward direction. …

IEICE Transactions on Electronics 92(2), 187-193, 2009-02-01

J-STAGE CrossRef References (18) Cited by (10)
19

Angularly-dispersed optical parametric amplification of optical pulses with one-octave bandwidth toward monocycle regime

Yamane K. , Tanigawa T. , Sekikawa T. , Yamashita M.

… We demonstrated experimentally the generation of 65-μJ, 5.8-fs optical pulses with an ultrabroad bandwidth (540-1000 nm) by the use of a double-pass angularly-dispersed non-collinear optical parametric amplifier. … We also confirmed up to the 95-μJ output from the amplifier when seed pulses were not pre-compensated for. …

Opt. Express 16(22), 18345-18353, 2008-10-27

IR CrossRef Cited by (1)
20

Coherent Control of Semiconductor Quantum Wire by High-Resolution and Stable Michelson Interferometer [in Japanese]

OKADA Takumi , KOMORI Kazuhiro , WANG Xue-Lun , OGURA Mutsuo , TSURUMACHI Noriaki

… We developed a high-resolution Michelson interferometer in order to stabilize the relative phase of double pulses by using a He-Ne two-frequency laser positioning system. …

IEEJ Transactions on Sensors and Micromachines 128(6), 285-291, 2008-06-01

J-STAGE CrossRef References (19)

Search Results:　 1-20 of 137

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Search Results:　 1-20 of 137