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 Results 1 - 20 of 89  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
(Joint) [detail]
Online Online EDF laser displacement sensor based on bending characteristics of cascaded-chirped long-period fiber grating
Koken Fukushima, Makoto Okano, Atsushi Wada, Satoshi Tanaka (NDA), Fumihiko Ito (Shimane Univ.) OFT2022-9
(Advance abstract in Japanese is available) [more] OFT2022-9
ED, IEE-BMS, IEE-MSS 2022-08-18
Tokyo Kikai-Shinko-Kaikan Bldg. B3-2 (Primary:On-site, Secondary:Online) A Test of a System for Monitoring the Concentration of Nitrate Ion in Plants by Laser-Induced Fluorescence Lifetime Measurement
Seiya Okazaki, Mayu Mori, Tomohisa Takaya (Toyama Pref. Univ.) ED2022-19
The nondestructive monitoring of the crop growth is effective for the succession of the agricultural knowledge accumulat... [more] ED2022-19
MWPTHz, EST, MW, EMT, OPE, IEE-EMT [detail] 2022-07-19
Hokkaido Asahikawa Civic Culture Hall
(Primary: On-site, Secondary: Online)
Fundamental Characteristic Measurements of Electroabsorption Modulator Integrated Laser Diode for Vector Modulation
Yuki Seto (Waseda Univ.), Keizo Ingaki (NICT), Tetsuya Kawanishi (Waseda Univ.) EMT2022-28 MW2022-52 OPE2022-31 EST2022-29 MWPTHz2022-26
We measured the fundamental characteristics of an EA modulator integrated laser diode for vector modulation of light. Di... [more] EMT2022-28 MW2022-52 OPE2022-31 EST2022-29 MWPTHz2022-26
(Joint) [detail]
Online Online FMCW measurement by using phase modulation of silicon photonics hybrid laser diode
Rio Kawana, Tomohiro Kita (Waseda Univ.) OCS2021-54 OFT2021-81 OPE2021-69
In autonomous driving, a distance measurement device using the FMCW method that can measure long distances with high acc... [more] OCS2021-54 OFT2021-81 OPE2021-69
pp.65-68(OCS), pp.60-63(OFT), pp.103-106(OPE)
ED, CPM, LQE 2021-11-25
Online Online Waveguide loss measurements in III-nitride laser structures
Kenta Ogasawara (KIT), Shigeta Sakai, Tadashi Okumura, Koichi Naniwae (Ushio Inc), Atsushi A. Yamaguchi (KIT) ED2021-21 CPM2021-55 LQE2021-33
InGaN is a semiconductor alloy material made of a mix of InN and GaN. InGaN can emit entire visible light by changing th... [more] ED2021-21 CPM2021-55 LQE2021-33
OFT 2021-10-14
Online Online [Poster Presentation] Real-time laser displacement measurement system using intensity correlation with phase-modulated signal -- range extension by detecting phase sign changes --
Hiroto Shimpo, Tamaki Ideno, Yosuke Tanaka (Tokyo Univ. of Agri. and Tech.) OFT2021-41
We have been studying a real-time laser displacement measurement system based on correlation between phase-modulated sig... [more] OFT2021-41
MWP 2021-05-26
Online Online [Invited Talk] Frequency shifted terahertz-wave generation pumped by fequency shifted feedback laser
Koji Suizu (Chiba Inst. Tech.) MWP2021-1
In the optical region distance measurement, frequency domain reflectometry (FDR measurement) using FSF laser (Frequency ... [more] MWP2021-1
US 2021-02-22
Online Online Study on normalized spectral entropy in defect detection of noncontact acoustic inspection
Kazuko Sugimoto, Tsuneyoshi Sugimoto (Toin Univ. of Yokohama) US2020-72
Noncontact acoustic inspection method is a non-contact non-destructive manner for remotely detecting and visualizing int... [more] US2020-72
(Joint) [detail]
Online Online EDF laser using cascaded-chirped long period fiber grating in sigma configuration and its application to temperature sensing
Koken Fukushima, Manuel Guterres Soares, Koki Nakaya, Atsushi Wada, Satoshi Tanaka (NDA), Fumihiko Ito (Shimane Univ.) OFT2020-56 OPE2020-76
We have constructed an EDF sigma laser (EDF$sigma$L) that employs a wavelength selection element consisting of a cascade... [more] OFT2020-56 OPE2020-76
ICD, HWS [detail] 2020-10-26
Online Online Laser-based Attacks on Ultrasonic Sensors
Tatsuya Suehiro, Taku Toyama, Junichi Sakamoto, Tsutomu Matsumoto (Yokohama National Univ.) HWS2020-28 ICD2020-17
We examine the instrumentation security threat of irradiating laser for a piezoelectric MEMS transducer in a MEMS ultras... [more] HWS2020-28 ICD2020-17
OPE, OCS, LQE 2020-10-23
Online Online Molecule-sensing scheme in which pair of distant comb-lines (delta 174 GHz) from all-optical semiconductor gate resonantly crosses acetylene-molecule's counterpart-pair of absorption lines.
Naoki Takahashi, Chaoyi Wang, Kyosuke Nagasaka, Yushi Suzuki, Kodai Ishida, Yoshiyasu Ueno (UEC) OCS2020-20 OPE2020-43 LQE2020-23
Portable dilute-gas-molecule-density measurement systems are bases for monitoring environmental load-gas densities in in... [more] OCS2020-20 OPE2020-43 LQE2020-23
OFT 2020-05-15
Aomori Aomori Tourist Information Center ASPAM
(Cancelled but technical report was issued)
EDF ring laser using cascaded-chirped long period fiber grating and its application to temperature sensing
Koken Fukushima, Bui Quoc Hung, Koki Nakaya, Manuel Guterres Soares, Atsushi Wada, Satoshi Tanaka (NDA), Fumihiko Ito (Shimane Univ.) OFT2020-1
We have proposed a novel erbium-doped fiber ring laser (EDFRL) using a cascaded-chirped long period fiber grating (C-CLP... [more] OFT2020-1
US 2020-02-28
Tokyo   Defect detection using resonance frequency identification by spatial spectral entropy for noncontact acoustic inspection -- Experimental result and analysis of a concrete slab of viaduct from a distance of 30m --
Kazuko Sugimoto, Tsuneyoshi Sugimoto (Toin Univ. of Yokohama), Noriyuki Utagawa, Chitose Kuroda (SatoKogyo) US2019-99
In noncontact acoustic inspection method, internal defects of composite materials, especially concrete was detected and ... [more] US2019-99
SANE 2019-11-28
Osaka OIT UMEDA Campus Case of laser measurement of slope surface by drone and aircraft.
Yohei Sato, Hiroyuki Morishima, Hiroshi Hara, Nobuhiro Ihara (JRC) SANE2019-73
In recent years, laser measuring instruments have been miniaturized and can be mounted on drones (UAV). In general, dron... [more] SANE2019-73
CPM, LQE, ED 2019-11-22
Shizuoka Shizuoka Univ. (Hamamatsu) Dislocation density dependence of optical gain and internal loss in UV-B region AlGaN active layer
Shunya Tanaka, Yuta Kawase (Meijo Univ.), Kosuke Sato (Asahi-Kasei/Meijo Univ.), Shinji Yasue, Shohei Teramura, Yuya Ogino (Meijo Univ.), Sho Iwayama (Meijo Univ./Mie Univ.), Motoaki Iwaya, Tetsuya Takeuchi, Satoshi Kamiyama (Meijo Univ.), Isamu Akasaki (Meijo Univ./Akasaki Research Center, Nagoya Univ.), Hideto Miyake (Mie Univ.) ED2019-55 CPM2019-74 LQE2019-98
The dependence of threshold pumping power density, optical gain, and internal loss on the dislocation density of AlGaN-b... [more] ED2019-55 CPM2019-74 LQE2019-98
(Joint) [detail]
Hokkaido   Frequency-characteristics measurements of optical frequency combs by beat notes technique
Tomoyuki Uehara, Kenichiro Tsuji (NDA) OFT2019-27
Optical frequency comb is used in many applications. In this research, we construct an optical frequency comb for precis... [more] OFT2019-27
LQE, LSJ 2019-05-31
Shiga   High-speed operation of a quantum cascade detector
Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Kazuue Fujita, Tadataka Edamura (HPK) LQE2019-19
We report a high-speed operation of a quantum cascade detector (QCD) which is a mid-infrared photodetector using intersu... [more] LQE2019-19
US 2019-02-22
Kanagawa   Non-contact Acoustic Inspection Method for Concrete Structures -- Long distance measurement for large bridge --
Itsuki Uechi, Tsuneyoshi Sugimoto, Kazuko Sugimoto, Shigeya Kawai (Toin Univ. of Yokohama), Noriyuki Utagawa, Chitose Kuroda (SatoKogyo Co., Ltd.), Akihiko Kawakami (JB Honshi Expressway) US2018-109
In this report, the measurement results of 2016 and 2017 on the lower surface of the floor slab of a large bridge were c... [more] US2018-109
Kyoto Doshisha Univ. [Poster Presentation] Evaluation of velocity anisotropy in the bovine meniscus by a laser ultrasound technique
Takumi Fukunaga, Masaki Kuraoka, Hirokazu Yasui, Mami Matsukawa (Doshisha Univ.) US2018-89
Measurements of the longitudinal wave velocities in bovine meniscus samples have been performed by using a laser ultraso... [more] US2018-89
ED, LQE, CPM 2018-11-30
Aichi Nagoya Inst. tech. A new method to evaluate the degree of potential fluctuation in InGaN quantum-well laser diodes by optical-pump stimulated-emission measurements
Itsuki Oshima, Yuma Ikeda, Shigeta Sakai, A. A. Yamaguchi (Kanazawa Inst. tec.), Yuya Kanitani, Shigetaka Tomiya (Sony) ED2018-49 CPM2018-83 LQE2018-103
It is well-known that the characteristics of InGaN quantum-well (QW) laser diodes are strongly affected by the potential... [more] ED2018-49 CPM2018-83 LQE2018-103
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