RIDAI登録の業績一覧

JSTと共催　特許庁後援　東京理科大学　新技術説明会　2019年10月31日
徳永英司　ポッケルス効果を用いた新たな光変調法と界面物性探索法
発表資料

JSTと共催　特許庁後援　東京理科大学　新技術説明会　2018年11月13日
瀬戸啓介　光学顕微鏡の分解能を超え、複数成分の動きや変化・光刺激が観察できる測定装置
発表資料

JSTと共催　特許庁後援　東京理科大学　新技術説明会　2016年11月8日
瀬戸啓介　時分割ロックイン検出法による非線形性・応答遅れ計測　
発表資料

発表論文

2023年度
Kyohei Yamashita, Ryusei Hanaki, Ayaka Mori, Kengo Suzuki, Tatusya Tomo, Eiji Tokunaga
Reddening of the Unicellular Green Alga Euglena gracilis by Dried Bonito Stock and Intense Red Light Irradiation
Plants 13(4), 510 (2024).
Open Access download

Shiou Tanimoto, Akihiro Okada, Takayoshi Kobayashi and Eiji Tokunaga
Pockels Effect at the Interface betweenWater and Ti Electrode
Appl. Sci. 13, 10284 (2023).
Open Access download

Kyohei Yamashita, Koji Yamada, Kengo Suzuki and Eiji Tokunaga
Method for growing edible Euglena gracilis in an inexpensive medium with tomato juice to a high cell density equivalent to the density in KH medium,
Sustainable Food Technology 1, 709 - 721, (2023).
Royal Society of Chemistry (selected for backcover of the journal)
Open Access download

Mayu Hasegawa, Junpei Oi, Kyohei Yamashita, Keisuke Seto, Takayoshi Kobayashi, and Eiji Tokunaga
Observation of Coherent Perfect Absorption in Oil Film on Water Surface and Sensitive Detection of Refractive Index Anisotropy in the Film
Langmuir 39, 11357-11362 (2023).
Open Access download

Ayaka Mori, Kyohei Yamashita, Eiji Tokunaga
Reproduction of Visible Absorbance Spectra of Highly Scattering Suspensions within an Integrating Sphere by Monte Carlo Simulation
Photonics 10(7), 754 14pages (2023).
Open Access download

Nathalie Vermeulen, Daniel Espinosa, Adam Ball, John M Ballato, Phillippe Boucaud, Georges Boudebs, Cecilia L. A. V. Campos, Peter D Dragic, Anderson Gomes, Mikko J. Huttunen, Nathaniel Kinsey, R P Mildren, Dragomir Neshev, Lazaro Padilha, Minhao Pu, Ray Secondo, Eiji Tokunaga, Dmitry Turchinovich, Jingshi Yan, Kresten Yvind, Ksenia Dolgaleva, and E van Stryland
Post-2000 nonlinear optical materials and measurements: Data tables and best practices
Journal of Physics: Photonics (JPhys Photonics) 5, 035001 176 pages (2023).
Open Access download

Keisuke Seto, Takayoshi Kobayashi, Eiji Tokunaga
Theoretical description for nonlinear dynamic light scattering based on stimulated Raman effect (NLDLS-SRS)
J. Raman. Spectroscopy 54, 719-736 (2023)
Open Access download

Tetsuo Aono, Kyohei Yamashita, Masafumi Hashimoto, Yuji Ishikawa, Kentaro Aizawa and Eiji Tokunaga
Spatial Distribution of Flagellated Microalgae Chlamydomonas reinhardtii in a Quasi-Two-Dimensional Space
Micromachines 14(4), 813 (2023).
Open Access download

2022年度
Ichiro Shimizu, Kyohei Yamashita, and Eiji Tokunaga
Development of a Simple Fabrication Method for Magnetic Micro Stir Bars and Induction of Rotational Motion in Chlamydomonas reinhardtii
Micromachines 13(11), 1842 (2022).
Open Access download

Kazuaki Nakata, Takayoshi Kobayashi and Eiji Tokunaga,
Extremely large electro-optic effect of TPPS J-aggregates in the PVA or PVP polymer matrix and aqueous solution
Phys. Chem. Chem. Phys. 24, 12513-12527 (2022).
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Keisuke Seto, Takayoshi Kobayashi, and Eiji Tokunaga,
Algorithm of auto-balancing noise-canceling based on noise correlation for high-speed balancing, high-dynamic range, and robustness against DC-offset drift
Rev. Sci. Instrum. 93, 043105 13pages (2022).
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Mayu Hasegawa, Junpei Oi, Kyohei Yamashita, Keisuke Seto, Takayoshi Kobayashi, and Eiji Tokunaga,
Coherent Perfect Absorption in a Transparent Polymer Film on a Transparent Substrate Utilizing Total Internal Reflection by Grazing Incidence
Appl. Sci. 12, 3633 11pages (2022).
Open Access download

徳永英司
　水を利用した光変調器
光アライアンス　33巻４号　頁16―20　(2022年4月)

2021年度
徳永英司
　 (私の研究室)徳永研究室　予想外の驚きに満ちた光の研究
理大科学フォーラム　第39巻1号(通巻427号　2022年2月)　pp.54-55

Akihiro Okada, Takayoshi Kobayashi,and Eiji Tokunaga,
Interfacial Pockels Effect of Solvents with a Larger Static Dielectric Constant Than Water and an Ionic Liquid on the Surface of a Transparent Oxide Electrode,
Appl. Sci. 12, 2454 12pages (2022).
Open Access download

Ayaka Mori, Kyohei Yamashita, Yunosuke Tabata, Keisuke Seto, and Eiji Tokunaga,
Absorbance spectroscopy of light scattering samples placed inside an integrating sphere for wide dynamic range absorbance measurement, Review of Scientific Instruments 92, 123103 (2021).
Open Access download

Satoshi Imura, Takayoshi Kobayashi, and Eiji Tokunaga
More Than 50-Fold Enhanced Nonlinear Optical Response of Porphyrin Molecules in Aqueous Solution Induced by Mixing Base and Organic Solvent
Appl. Sci. 11, 4892 12pages (2021).
Open Access download

愛媛新聞関東えひめ人で徳永が紹介されました　2021年4月30日

2020年度
Yurina Nishi, Ryosuke Watanabe, Subaru Sasaki, Akihiro Okada, Keisuke Seto, Takayoshi Kobayashi and Eiji Tokunaga
Electric-Field Induced Shift in the Plasmon Resonance Due to the Interfacial Pockels Effect of Water on a Silver Surface
Appl. Sci. 11, 2152 17pages (2021).
Open Access download

Keisuke Seto, Takayoshi Kobayashi and Eiji Tokunaga
Noise cancellation of white pulsed light with pulse-to-pulse observation of probe and reference pulses in spectral pump/probe measurement
J. Phys. Commun. 4, 125009 16pages (2020).
Open Access download

Kyohei Yamashita, Ryoma Tagawa, Yoshikazu Higami, and Eiji Tokunaga
Noninvasive and Safe Cell Viability Assay for Breast Cancer MCF-7 Cells Using Natural Food Pigment
Biology 9, 227 (2020) 14pages
Open Access download

Keisuke Seto, Hiromu Yamada, Takayoshi Kobayashi, and Eiji Tokunaga,
Proof‐of‐Principle Experiment of the Pseudorandom Multiplexing of White‐Pump Light for Spectral Photothermal Microscopy
annalen der physik 2020, 2000241, 8 pages
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Junko Usukura, Selvakumar V. Nair, and Eiji Tokunaga
Accurate modeling of electron-hole binding in CuCl. II. Biexciton wavefunction
Phys. Rev. B 102, 075203 1-10 (2020).
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Selvakumar V. Nair, Junko Usukura, and Eiji Tokunaga
Accurate modeling of electron-hole binding in CuCl. I. Exciton states
Phys. Rev. B 102, 075202 1-8 (2020).
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Kyohei Yamashita and Eiji Tokunaga
Noninvasive and safe cell viability assay for Paramecium using natural pigment extracted from food
Scientific Reports 10, 10996 (2020). 11 pages
Open Access download

Masayuki Shirakawa, Takayoshi Kobayashi, and Eiji Tokunaga
Efficient Molecular Aggregation of Rhodamine 6G and Pseudoisocyanine by Light-Induced Force
Appl. Sci. 10, 3563 1-8 (2020).
Open Access download

徳永英司
界面ポッケルス効果を用いた巨大光変調と界面物性探索
化学工業第71巻7号 pp.393-400 (2020年7月)

徳永英司
　ナノ界面水に電場をかけて光をon/offする
理大科学フォーラム　第37巻5号(通巻419号　2020年10月)　pp.24-29

2019年度
Hiromichi Chima, Naoyuki Shiokawa, Keisuke Seto, Kohsei Takahashi, Naoto Hirosaki, Takayoshi Kobayashi, Eiji Tokunaga
Thermal Relaxation Spectra for Evaluating Luminescence Quantum Efficiency of CASN:Eu2+ Measured by Balanced-Detection Sagnac-Interferometer Photothermal Deflection Spectroscopy
Appl. Sci. 10, 1008 1-13 (2020).
Open Access download

プレスリリース：光吸収と熱緩和のスペクトルの差分を利用したエネルギー変換効率の測定に成功～測定ノイズを低減した熱緩和スペクトルの高感度な測定法がもたらした成果～
EurekAlert:Towards a Sustainable Future―Novel Technology to Measure Energy Conversion Efficiency
オプトロニクス社　2020年2月18日
 LinkedIn

Masayuki Shirakawa, Takayoshi Kobayashi, and Eiji Tokunaga
Solvent Effects in Highly Efficient Light-Induced Molecular Aggregation
Appl. Sci. 9, 5381 1-14 (2019).
Open Access download

Daisuke Hayama, Keisuke Seto, Kyohei Yamashita, Shunpei Yukita, Takayoshi Kobayashi, and Eiji Tokunaga
Giant Pockels effect in an electrode-water interface for a “liquid” light modulator
OSA Continuum 2, No. 12 pp.3358-3374 (2019).
Open Access download

プレスリリース：液体の水を利用した光変調器の開発に世界で初めて成功～界面ポッケルス効果を用いた巨大光変調の実現～
世界初水を利用した光変調器　フジサンケイビジネスアイ大学発日本人と技術　2019年12月25日
fabcross for エンジニア 2019年11月21日
オプトロニクス社　2019年11月21日
Electronics Weekly.com
LaserFocusWorld
PHYS.ORG

Kyohei Yamashita, Takafumi Yagi, Takumi Isono, Yusuke Nishiyama, Masafumi Hashimoto, Koji Yamada, Kengo Suzuki, and Eiji Tokunaga
Absorbance spectra of the hematochrome-like granules and eyespot of Euglena gracilis by scan-free absorbance spectral imaging A(x, y, λ) within the live cells
Journal of Plant Research, 132, Issue 3, pp 431-438 (2019).

Kyohei Yamashita, Koji Yamada, Kengo Suzuki, and Eiji Tokunaga
Noninvasive and safe cell viability assay for Euglena gracilis using natural food pigment
PeerJ 7:e6636(2019).
DOI 10.7717/peerj.6636
Open Access download

2018年度
徳永英司　相沢創　瀬戸啓介
半球プラズモニックヤヌス粒子の作製
月間ファインケミカル 48巻 3号 25-37頁(2019年 3月)

K. Seto, H. Yamada, T. Kobayashi, and E. Tokunaga,
Demonstration of wavelength-scan-free action spectroscopy in pump/probe measurement with supercontinuum pump light,
Optics Express 27, 6976-6995 (2019).
Open Access download

M. E. Sasin, A. G. Smolin, K.-H. Gericke, E. Tokunaga and O. S. Vasyutinskii,
Fluorescence anisotropy in indole under two-photon excitation in the spectral range 385?510 nm
Physical Chemistry Chemical Physics 20, 19922-19931 (2018).

Keisuke Seto, Takashi Tarumi, and Eiji Tokunaga,
Amplitude-phase cross talk as a deterioration factor of signal-to-noise ratio in phase-detection noise-cancellation technique for spectral pump/probe measurements and compensation of the amplitude-phase cross talk
Rev. Sci. Instrum. 89, 063111 1-15 (2018).

So Aizawa, Keisuke Seto, and Eiji Tokunaga,
External Field Response and Applications of Metal Coated Hemispherical Janus Particles
Appl. Sci. 8, 653 (2018).
Open Access download

プレスリリース：形状と表面の性質の両方に異方性のある双面粒子の汎用的作成法を開発 -世界で初めての半球プラズモニックヤヌス粒子を作製
 オプトロニクス社　2018年5月23日

 化学工業日報（東京）　2018年5月24日
科学新聞（東京）　2018年6月15日

2017年度　Langmuir 33, 14684-14690 (2017). も参照

2017年度
Shunpei Yukita, Yuto Suzuki, Naoyuki Shiokawa, Takayoshi Kobayashi, and Eiji Tokunaga
Mechanisms of the anomalous Pockels effect in bulk water
Optical Review 25, 205-214 (2018)
download
final version download

Kentaro Takagi, Selvakumar V. Nair, Jumpei Saito, Keisuke Seto, Ryosuke Watanabe, Takayoshi Kobayashi and Eiji Tokunaga,
Plasmon Modulation Spectroscopy of Noble Metals to Reveal the Distribution of the Fermi Surface Electrons in the Conduction Band
Applied Sciences (Appl. Sci.) 7, 1315 1-11 (2017).
Open Access download

So Aizawa, Keisuke Seto, and Eiji Tokunaga,
Orientation Control of Hemispherical Janus Particles and Metal Coating on the Selective Surface To Excite Surface Plasmon Polaritons in the Micro-Kretschmann Geometry
Langmuir 33(51), 14684-14690 (2017).
download
2018年度プレスリリース-世界で初めての半球プラズモニックヤヌス粒子を作製-参照

Kentaro Takagi, Selvakumar V. Nair, Ryosuke Watanabe, Keisuke Seto, Takayoshi Kobayashi and Eiji Tokunaga,
Surface plasmon polariton resonance of gold, silver, and copper studied in the Kretschmann geometry: dependence on wavelength, angle of incidence, and film thickness,
J. Phys. Soc. Jpn. 86, 124721 1-11 (2017).
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Hironori Kanemaru, Shunpei Yukita, Hajime Namiki, Yugo Nosaka, Takayoshi Kobayashi, and Eiji Tokunaga
Giant Pockels effect of polar organic solvents and water in the electric double layer on a transparent electrode,
RSC Advances 7, 45682 - 45690 (2017).
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2016年度
Masayuki Shirakawa, Kazuaki Nakata, Masaya Suzuki, Takayoshi Kobayashi and Eiji Tokunaga,
Nonlinear absorption spectroscopy of porphyrin J-aggregates in aqueous solution: evidence for control of degree of association by light induced force,
J. Phys. Soc. Jpn. 86, 044703 7pages (2017).
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プレスリリース：光誘起力による高効率分子会合体生成とその測定法開発について
 フジサンケイビジネスアイ大学発日本人と技術　2017年7月　
オプトロニクス社　2017年4月10日
 科学新聞　2017年4月28日　

Naoyuki Shiokawa and Eiji Tokunaga,
Quasi first-order Hermite Gaussian beam for enhanced sensitivity in Sagnac interferometer photothermal deflection spectroscopy,
Optics Express Vol. 24, No. 11, 11961-11974 (2016).
DOI:10.1364/OE.24.011961
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Yuto Suzuki, Kengo Osawa, Shunpei Yukita, Takayoshi Kobayashi, and Eiji Tokunaga,
Anomalously large electro-optic Pockels effect at the air-water interface with an electric field applied parallel to the interface,
Applied Physics Letters 108, 191103-1～5 (2016).
doi: 10.1063/1.4949273
download

Daichi Tanaka, Yudai Numata, Kazuya Nakagawa, Takayoshi Kobayashi, and Eiji Tokunaga,
Cross-shaped photoluminescence of excimers in perylene crystals,
Optical Review 23, 373-381 (2016).
DOI 10.1007/s10043-016-0214-x
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Takafumi Yagi, Kyohei Yamashita, Norihide Okada, Takumi Isono, Daisuke Momose, Shigeru Mineki, Eiji Tokunaga,
Hydrogen photoproduction in green algae Chlamydomonas reinhardtii sustainable over 2 weeks with the original cell culture without supply of fresh cells nor exchange of the whole culture medium
J. of Plant Research 129, 771-779 (2016)
DOI 10.1007/s10265-016-0825-0
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2015年度
Masaya Suzuki, Kazuaki Nakata, Reiko Kuroda, Takayoshi Kobayashi, Eiji Tokunaga,
Electrooptic Kerr effect of porphyrin H-aggregates in polymer films: Polymer specific spectral blue shift,
Chemical Physics 469-470, 88-96 (2016)
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Takumi Isono, Kyohei Yamashita, Daisuke Momose, Hiroki Kobayashi, Masashi Kitamura, Yusuke Nishiyama, Takahiro Hosoya, Hiroaki Kanda, Ayane Kudo, Norihide Okada, Takafumi Yagi, Kazuaki Nakata, Shigeru Mineki, Eiji Tokunaga,
Scan-free absorbance spectral imaging A(x,y,lambda) of single live algal cells for quantifying absorbance of cell suspensions,
PLOS ONE (2015) 10(6): e0128002 1-16
プレスリリース：無走査型単一細胞吸収分光イメージング法の開発について ~単一生細胞の 3 次元情報 A(x,y,λ)（空間分解吸収スペクトル）を一瞬で取得~
オプトロニクス社　2015年6月12日
 download
Open Access

Keisuke Seto, Toshiaki Tsukada, Yoshinao Okuda, Eiji Tokunaga, and Takayoshi Kobayashi,
Noise cancellation with phase-detection technique for pump-probe measurement and application to stimulated Raman imaging,
J. Opt. Soc. Am. A 32, 809-821 (2015) download

特許出願　発明者　瀬戸啓介　徳永英司　庭瀬暁隆
発明の名称：信号検出装置及び方法　
特願2016-38306　出願日：2016/2/29 出願人：東京理科大学

特許出願　発明者　原田良祐　徳永英司　相沢創　瀬戸啓介
発明の名称：金属被覆異形樹脂粒子及びその製造方法、金属被覆異形樹脂粒子の配列膜及びその製造方法、粒子群、並びに粒子配列膜の製造方法
特願2016-071706　出願日：2016/3/31 出願人：積水化成品工業株式会社

2014年度
Kazuaki Nakata, Eiji Tokunaga, Juan Du, Bing Xue, Jun Miyazaki, Keisuke Seto, and Takayoshi Kobayashi,
Sub-10 fs spectroscopy of K-TCNQ crystal for observation of intramolecular vibration modulation in melting of the Peierls dimer,
Phys. Rev. B90, 085119 1-5 (2014) download

Keisuke Seto, Yoshinao Okuda, Eiji Tokunaga, Takayoshi Kobayashi,
Multiplex stimulated Raman imaging with white probe-light from a photonic-crystal fiber and with multi-wavelength balanced detection,
J. Phys. D: Appl. Phys. 47, 345401 (2014). download

Yudai Numata, Selvakumar V. Nair, Kazuya Nakagawa, Heisuke Ishino, Takayoshi Kobayashi, Eiji Tokunaga,
Optical size effect of organic nanocrystals studied by absorption spectroscopy within an integrating sphere,
Chem. Phys. Lett. 601, 128-133 (2014). download

Keisuke Seto, Toshiaki Tsukada, Yoshinao Okuda, Eiji Tokunaga, and Takayoshi Kobayashi,
Development of a balanced detector with biased synchronous detection and　application to near shot noise limited noise cancelling of supercontinuum pulse light,
Rev. Sci. Instrum. 85, 023702-1～11 (2014). download

2013年度
Kazuya Nakagawa, Yudai Numata, Heisuke Ishino, Daichi Tanaka, Takayoshi Kobayashi, Eiji Tokunaga,
Excimer Luminescence From Nonresonantly Excited Pyrene and Perylene Molecules in Solution,
J. Phys. Chem. A 117, 11449-11455 (2013).download SI download

Daisuke Hasegawa, Kazuaki Nakata, Eiji Tokunaga, Kotaro Okamura, Juan Du, Takayoshi Kobayashi,
Vibrational Energy Flow between Modes by　Dynamic Mode Coupling in THIATS J-Aggregates,
J. Phys. Chem. A 117, 11441-11448 (2013).download

Keisuke Seto, Yoshinao Okuda, Eiji Tokunaga, and Takayoshi Kobayashi,
Development of a multiplex stimulated Raman microscope for spectral imaging through multi-channel lock-in detection,
Rev. Sci. Instrum. 84, 083705-1～9 (2013).download

2012年度
[解説]寺本高啓、徳永英司、小林孝嘉
マルチチャンネルダブルロックインアンプを用いた超高速実時間振動分光法
分光研究　Vol.61 No.6 pp.230-233

Naoyuki Shiokawa, Yuki Mizuno, Harumasa Tsuchiya, and Eiji Tokunaga,
Sagnac interferometer for photothermal deflection spectroscopy,
Opt. Lett. 37, (No.13) 2655-2657 (2012) download

Shunpei Yukita, Naoyuki Shiokawa, Hiroki Kanemaru, Hajime Namiki, Takayoshi Kobayashi, Eiji Tokunaga,
Deflection switching of a laser beam by the Pockels effect of water,
Appl. Phys. Lett. 100, (No.17) 171108-1～3 (2012).download

2011年度
[著書] Eiji Tokunaga and Kazuaki Nakata, Giant electrooptic effect in porphyrin J-aggregates in polymer film and in aqueous solution, pp.213-246, chap.8 in J-aggregates Vol.2, edited by Takayoshi Kobayashi, World Scientific, January 2012.

Juan Du, Kazuaki Nakata, Yongliang Jiang, Eiji Tokunaga, and Takayoshi Kobayashi, Spectral modulation observed in Chl-a by ultrafast laser spectroscopy, Optics Express 19, 22480-22485 (2011).download

K. Nakata, T. Kobayashi,　E. Tokunaga,
Electric field-controlled dissociation and association of porphyrin J-aggregates in aqueous solution,
Phys. Chem. Chem. Phys. 13, 17756-17767 (2011).download

Juan Du, Takahiro Teramoto, Kazuaki Nakata, Eiji Tokunaga, and Takayoshi Kobayashi, Real-time vibrational dynamics in chlorophyll a studied with a few-cycle pulse laser, Biophysical Journal 101, 995-1003 (2011).download

H. Ishino, S.V. Nair, K. Nakagawa, T. Kobayashi, E. Tokunaga,
Effect of light scattering on the transmission spectra of organic nanocrystals,
Appl. Phys. Lett. 99, 053304-1～3 (2011).download
[selected for APL: Organic Electronics and Photonics vol. 4, issue 8 (2011), free]

H. Ishino, S. Iwai, S. Iwamoto, T. Okumura, T. Nishimoto, S.V. Nair, T. Kobayashi, E. Tokunaga
Absorption and emission spectra of molecular excitons in single perylene nanocrystals,
Phys. Rev. B 84, 041303(R)-1～4 (2011).download

T. Teramoto, J. Du, Z. Wang, J. Liu , E. Tokunaga, T. Kobayashi,
Development of real-time vibrational spectroscopy of molecules in electronic excited states:towards mapping molecular potential energy hypersurfaces,
J. Opt. Soc. Am. B 28, No.5, 1043-1050 (2011).download

2010年度
H. Kanemaru, Y. Nosaka, A. Hirako, K. Ohkawa, T. Kobayashi,E. Tokunaga,　Electrooptic effect of water in the electric double layer at the interface of GaN electrode, Optical Review 17, 352 (2010). download

H. Ishino, S. Iwai, S. Iwamoto, T. Okumura, T. Kobayashi, E. Tokunaga, Nonlinear absorption microspectroscopy of single perylene nanocrystals with a multichannel double lock-in amplifier, Optical Review 17, 337 (2010). download

K. Nakata, T. Kobayashi, E. Tokunaga, Mechanism for giant electro-optic response of porphyrin J-aggregates in polymer film and in aqueous solution, Optical Review 17, 346 (2010). download

E. Tokunaga, N. Sato, J. Korenaga, T. Imai, S. Sato, H. Hamaguchi, Visible nonlinear band-edge luminescence in ZnSe and CdS excited by a mid-infrared free-electron laser, Optical Review 17, 341 (2010). download

2009年度

T. Katsumata, K. Nakata, T. Ogawa, K. Koike, T. Kobayashi, E. Tokunaga, Mechanism for giant electrooptic response of excitons in porphyrin J-aggregates: Molecular rearrangement model, Chem. Phys. Lett. 477, 150-155 (2009). download

2008年度

徳永英司　科学教養講座　「電圧による水の巨大な屈折率変化」　東京理科大　科学フォーラム　2009年1月号 pp.36-43　36 38 40 42

I. Tanaka, K. Shibata, E. Tokunaga, S. Tokito, Energy-transfer dynamics of blue-phosphorescent iridium and rhodium complexes doped in fluorescent molecules,　Journal of the Society for Information Display 16, 695-701 (2008).download

Y. Nosaka, M. Hirabayashi, T. Kobayashi, and E. Tokunaga, Gigantic optical Pockels effect in water within the electric double layer at the electrode-solution interface, Phys. Rev. B　77, 241401(R)-1～4 (2008). download
（Phys. Rev. BのEditor's Suggestionに選出されています。15報に1報程度の割合で、編集者や審査員により注目に値すると判断された論文が選出されます。)

プレスリリース：水の巨大なポッケルス効果の発見
 参考資料：水の巨大なポッケルス効果の発見
 新聞記事東京新聞　2008年7月15日朝刊　
新聞記事中日新聞　2008年7月15日夕刊
日経　技術系サイト　Tech-On 2008年6月30日
http://techon.nikkeibp.co.jp/article/NEWS/20080630/154121/　

S. Iwai, M. Tanaka, M. Mitsunaga, T. Kobayashi, and E. Tokunaga, Excited-state absorption spectra for optically forbidden f－f transitions in an Eu3+:Y2SiO5 crystal and Eu3+ aqueous solution, J. Opt. Soc. Am. B 25, 1046-1050 (2008).download

2007年度

K. Watanabe, D. Kumaki, T. Tsuzuki, E. Tokunaga, S. Tokito, Small molecule-based organic electrophosphorescent devices fabricated by spin coating, Journal of Photopolymer Science and Technology 20, 39-42 (2007)

Y. Nosaka and E. Tokunaga, Development of photoacoustic spectroscopy with a piezofilm, Appl. Opt.　46, 4289-4293, (2007).download errata

T. Kobayashi, A. Colonna, A.Yabushita, I. Iwakura, E. Tokunaga, Chirped molecular vibration after impulsive Raman excitation in a stilbene derivative molecule in solution, Ultrafast Phenomena XV, Springer Series in Chemical Physics 88, 279-281 (2007). download

特許出願「鋳型板、マイクロチップ、並びに鋳型板及びマイクロチップの製造方法」　特願2008-048724　（2008.2.28出願、理科大整理番号　T2007-079）

2006年度

M. Sugisaki, H.-W. Ren, S.V. Nair, E. Tokunaga, K. Nishi, Y. Masumoto, H.E. Ruda, Anistropic optical response of InP self-assembled quantum dots studied by pump-probe spectroscopy, Phy. Rev. B 75, 125315 1-9 (2007).download

E. Tokunaga, Y. Nosaka, M. Hirabayashi, T. Kobayashi, Pockels effect of water in the electric double layer at the interface between water and transparent electrode, Surf. Sci. 601, 735-741 (2007). download

徳永英司　「多チャンネルダブルロックインアンプによる微弱光分光システム」
第38回　光波センシング技術研究会　講演論文集　実用化が進む分光センシング p.49-56　（招待講演、主催　応用物理学会・光波センシング技術研究会）　2006年12月12日　
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2005年度

T. Ogawa, E. Tokunaga, and T. Kobayashi, Giant electrooptic response of excitons in porphyrin J-aggregates, Chem. Phys. Lett. 408, 186-191 (2005).download Errata

T. Kobayashi, K. Nishimura, and E. Tokunaga, Real-time spectroscopy of pseudoisocyanine J-aggregates with　sub-5fs lasers, J. Mol. Struct. 735-736, 179-187 (2005).

N. Ishii, E. Tokunaga, S. Adachi, T. Kimura, H. Matsuda, and T. Kobayashi, Two-dimensional spectroscopy by spectrally resolved real-time resonant coherent Raman scattering in polydiacetylene,　Ultrafast Phenomena XIV, Springer Series in Chemical Physics 79, 563-565 (2005).download

2004年度

K. Nishimura, E. Tokunaga, and T. Kobayashi,Sub-5-fs two-dimensional spectroscopy of pseudoisocyanine J-aggregates,Chem. Phys. Lett. 395, 114-119 (2004).download

N. Ishii, E. Tokunaga, S. Adachi，T. Kimura, H. Matsuda, and T. Kobayashi,Optical frequency- and vibrational time-resolved two-dimensional spectroscopy by real-time impulsive resonant coherent Raman scattering in polydiacetylene,　Phys. Rev. A 70, 023811, 7 pages (2004).download

新聞記事

(特許)　マルチチャンネル2次元分光方法　特許第3568847号 (2004.6月登録　特願平11-328918号,　特開2001-147160)

2001年度以前　主要論文

E. Tokunaga, A.L. Ivanov, S.V. Nair, and Y. Masumoto, Hopfield coefficients measured by inverse polariton series, Phys. Rev. B 63, No.23, 233203, 4 pages (2001).download

E. Tokunaga, K. Kurihara, M. Baba, Y. Masumoto and M. Matsuoka, Bipolariton coupling in biexciton optical decay: Degenerate and nondegenerate polariton emissions in CuCl,Phys. Rev. B 64, No.4, 045209, 20 pages (2001). download

E. Tokunaga, A.L. Ivanov, S.V. Nair, and Y. Masumoto, Biexciton wavefunction in bulk CuCl probed by inverse polariton series, Phys. Stat. Sol. (b) 221, 359-363 (2000).download

E. Tokunaga, A.L. Ivanov, S.V. Nair, and Y. Masumoto, Inverse exciton series in the optical decay of an excitonic molecule, Phys. Rev. B 59, R7837-R7840 (1999).download

K. Kurihara, E. Tokunaga, M. Baba, and M. Matsuoka, Lifetime measurement of high-wave-number biexcitons in CuCl, Phys. Rev. B 52, No.11, 8179-8183 (1995).download

E. Tokunaga, A. Terasaki, V.S. Valencia, T. Wada, H. Sasabe, and T. Kobayashi, Femtosecond phase spectroscopy of multi-level systems: Phthalocyanines, Appl. Phys. B 63, 255-264 (1996).download

E. Tokunaga, A. Terasaki, and T. Kobayashi, Femtosecond continuum interferometer for transient phase and transmission spectroscopy, J. Opt. Soc. Am. B 13, 496-513 (1996).download

E. Tokunaga, A. Terasaki, and T. Kobayashi, Femtosecond phase spectroscopy by use of frequency-domain interference, J. Opt. Soc. Am. B 12, 753-771 (1995).download

1993 新聞記事クラマース・クローニッヒ関係式の破れ

1992 新聞記事周波数領域干渉計

E. Tokunaga, A. Terasaki, and T. Kobayashi, Femtosecond time-resolved dispersion relations studied with a frequency-domain interferometer, Phys. Rev. A 47, No.6, R4581-R4584 (1993).download

E. Tokunaga, A. Terasaki, and T. Kobayashi, Induced phase modulation of chirped continuum pulses studied with a femtosecond frequency-domain interferometer, Opt. Lett. 18, No.5, 370-372 (1993).download

E. Tokunaga, A. Terasaki, and T. Kobayashi, Frequency-domain interferometer for femtosecond time-resolved phase spectroscopy, Opt. Lett. 17, No.16, 1131-1133 (1992).download