koji hashiguchi

ハシグチコウジ | koji hashiguchi

Affiliation and department：

Research field (2)： Semiconductors, optical and atomic physics , Analytical chemistry

Research keywords (6)：レーザー分光 , 微量水分 , キャビティリングダウン分光 , スペクトル解析 , 分子分光 , 量子情報処理プロジェクト

Research theme for competitive and other funds (7)：

2022 - 2026 CRDSを用いた同位体比の高精度測定技術の開発及び三重点への同位体比の影響評価
2022 - 2025 様々な環境での微量成分測定を可能にするリムーバブル共振器を用いたCRDS装置開発
2021 - 2024 Development of a method for gas concentration measurement with stability of a ppm-level linked to a frequency standard
2017 - 2020 High-sensitivity and high-resolution spectral measurement of trace moisture using wavelength-meter controlled CRDS system
2016 - 2019 ガス中微量水分計の小型・軽量・ロバスト化技術の研究

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Papers (11)：

Koji Hashiguchi, Minami Amano, Agata Cygan, Daniel Lisak, Roman Ciuryło, Hisashi Abe. Accurate determination of line intensity of H2O near 7181 cm-1 : SI-traceable measurement using primary trace-moisture standard in N2 gas. Journal of Quantitative Spectroscopy and Radiative Transfer. 2023. 311. 108784
H. Abe, M. Amano, K. Hashiguchi, D. Lisak, S. Honda, T. Miyake. Improvement of spectral resolution in a miniaturized trace-moisture sensor using cavity ring-down spectroscopy: Performance evaluation using a trace-moisture standard in He. Sensors and Actuators A: Physical. 2023. 114146-114146
Koji Hashiguchi, Daniel Lisak, Agata Cygan, Roman Ciuryło, Hisashi Abe. Spectral analysis of H2O near 7180 cm-1 to accurately measure trace moisture in N2 gas: Evaluation of line shape profiles using Akaike Information Criterion. Japanese Journal of Applied Physics. 2021. 61. 1. 012003
Tomoya Akatsuka, Koji Hashiguchi, Tadahiro Takahashi, Noriaki Ohmae, Masao Takamoto, Hidetoshi Katori. Three-stage laser cooling of Sr atoms using the 5s5pP23 metastable state below Doppler temperatures. Physical Review A. 2021. 103. 2. 023331
H. Abe, K. Hashiguchi, D. Lisak, S. Honda, T. Miyake, H. Shimizu. A miniaturized trace-moisture sensor based on cavity ring-down spectroscopy. Sensors and Actuators A: Physical. 2021. 320. 112559-112559

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MISC (38)：

橋口幸治, 天野みなみ, CYGAN Agata, LISAK Daniel, CIURYLO Roman, 阿部恒. The gas dependence of the absorption spectra of trace moisture. 応用物理学会春季学術講演会講演予稿集(CD-ROM). 2023. 70th
阿部恒, 天野みなみ, 橋口幸治, LISAK D., 本田真一, 三宅伴季. Measurement of trace moisture in He gas using a miniaturized CRDS-based trace-moisture analyzer. 応用物理学会春季学術講演会講演予稿集(CD-ROM). 2023. 70th
阿部恒, 天野みなみ, 橋口幸治, 本田真一, 三宅伴季. Improvement of spectral resolution in a miniaturized CRDS-based trace-moisture analyzer. 応用物理学会春季学術講演会講演予稿集(CD-ROM). 2022. 69th
橋口幸治, LISAK Daniel, CYGAN Agata, CIURYLO Roman, 阿部恒. Evaluation of line shape profiles for spectral analysis of H₂O to accurately measure trace moisture. 応用物理学会春季学術講演会講演予稿集(CD-ROM). 2022. 69th
橋口幸治, 天野みなみ, CYGAN Agata, LISAK daniel, CIURYLO roman, 阿部恒. The pressure effect on the absorption spectra of trace moisture in N₂ gas. 応用物理学会秋季学術講演会講演予稿集(CD-ROM). 2022. 83rd

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Lectures and oral presentations (7)：

Improvement of the cavity in CRDS for high-precise measurement of trace moisture
(ITS10 2023)
WAVELENGTH-METER CONTROLLED CRDS SYSTEM FOR HIGH-SENSITIVE DETECTION OF TRACE MOISTURE
(TEMPMEKO2019 2019)
HIGH-SENSITIVITY MEASUREMENT OF TRACE MOISTURE IN N_2 USING WAVELENGTH-METER CONTROLLED CRDS SYSTEM
(TEMPMEKO2019 2019)
ガス中微量水分の高感度吸収スペクトル測定
(第78回応用物理学会秋季学術講演会 2017)
Humidity Standard and Measurement System of Trace Moisture
(Development of standards for indoor and outdoor air pollutants 2016)

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Professional career (1)：

Work history (2)：

Awards (1)：

Association Membership(s) (2)：

THE JAPAN SOCIETY OF APPLIED PHYSICS , 日本物理学会

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