Nobuhiro Umemura

J-GLOBAL         Last updated: Nov 23, 2018 at 23:14
Nobuhiro Umemura
Chitose Institute of Science and Technology

Published Papers

K. Kato, S. G. Grechin, N. Umemura
Laser Physics   28    Sep 2018
© 2018 Astro Ltd. This paper reports on the new thermo-optic dispersion formula for LiB3O5that provides a good reproduction of the temperature dependent phase-matching conditions for second-harmonic generation, sum-frequency generation, and optica...
Nobuhiro Umemura, Jun Watanabe, Daisuke Matsuda, Tomosumi Kamimura
Japanese Journal of Applied Physics   56    Mar 2017
© 2017 The Japan Society of Applied Physics. We report the high-Accuracy Sellmeier and thermo-optic dispersion formulas for Li2B4O7, which provide an excellent reproduction of the temperature- dependent phase-matching conditions for second-harmoni...
Kiyoshi Kato, Nobuhiro Umemura, Valentin Petrov
Optics Communications   386 49-52   Mar 2017
© 2016 This paper reports the Sellmeier and thermo-optic dispersion formulas for CdGa2S4that provide excellent reproduction of the temperature-dependent phase-matching conditions in Hg0.35Cd0.65Ga2S4and Hg0.51Cd0.49Ga2S4for second-harmonic generat...
Ryosuke Nakamura, Yoshizumi Inagaki, Yoshizumi Inagaki, Hidefumi Hata, Hidefumi Hata, Norio Hamada, Nobuhiro Umemura, Tomosumi Kamimura
Applied Optics   55 9365-9369   Nov 2016
© 2016 Optical Society of America. Femtosecond time-resolved mid-infrared (MIR) spectroscopy based on chirped-pulse upconversion is a promising method for observing molecular vibrational dynamics. A quantitative study on nonlinear media for upconv...
Nobuhiro Umemura, Daisuke Matsuda
Optics Communications   367 167-173   May 2016
© 2016 Elsevier B.V. All rights reserved. We report the high accuracy thermo-optic dispersion formula for the ordinary wave of 5 mol% MgO doped congruent LiNbO3(MgO:LiNbO3), which reproduces well our experimental data for the temperature-dependent...


K. Kato, N. Umemura, T. Mikami, T. Mikami
Proceedings of SPIE - The International Society for Optical Engineering   7582    May 2010
This paper reports the high-accuracy Sellmeier and thermo-optic dispersion formulas for β-BaB2O4(β-BBO) that provide the excellent reproduction of our data for second-harmonic generation (SHG) and sum-frequency generation (SFG) down to 0.2048 and ...
Miyata Kentaro, Umemura Nobuhiro, Kato Kiyoshi
Several nonlinear crystals have been found to be simultaneously birefringent phase-matchable for two different upconversions in the blue and red ranges by using a Nd:YAG laser at 1.0642 μm and a parametric oscillator pumped by its second harmonic....
K. Kato, N. Umemura, K. Miyata
Proceedings - 2014 International Conference Laser Optics, LO 2014      Jan 2014
This paper reports the high-accuracy Sellmeier equations for LiInS2that provide excellent reproduction of our new experimental results for second-harmonic (SHG) and sum-frequency generation (SFG) in the 0.8018-10.5910μm range as well as the publis...
Takuma Mizuno, Daisuke Matsuda, Nobuhiro Umemura
Progress in Biomedical Optics and Imaging - Proceedings of SPIE   9347    Jan 2015
© 2015 SPIE. This paper reports the temperature-dependent phase-matching properties of 1.3mol% MgO doped stoichiometric LiNbO<inf>3</inf> (1.3mol%MgO:SLN) together with the new Sellmeier equations, which reproduce well our experimental results for...
Nobuhiro Umemura, Valentin Petrov, Valery V. Badikov, Kiyoshi Kato
Progress in Biomedical Optics and Imaging - Proceedings of SPIE   9347    Jan 2015
© 2015 SPIE. By pumping a yellow phase, 1.4-cm-long, θ=9.2° (φ=0°) cut BaGa<inf>4</inf>S<inf>7</inf> crystal with a Nd:YAG laser-pumped KTP and AgGaS<inf>2</inf> optical parametric oscillators (OPOs) and second-harmonic generation (SHG) of a frequ...

Conference Activities & Talks

加藤洌, 加藤洌, GRECHIN Sergey G, 三上拓哉, 梅村信弘
応用物理学会春季学術講演会講演予稿集(CD-ROM)   5 Mar 2018   
大沼佑亮, 中原康裕, 鈴木健翔, LI L., 梅村信弘
応用物理学会北海道支部/日本光学会北海道支部合同学術講演会講演予稿集   6 Jan 2018   
レーザー学会研究会報告   2018   
梅村信弘, 大沼佑亮, 松田大輔
応用物理学会春季学術講演会講演予稿集(CD-ROM)   1 Mar 2017   
梅村信弘, PETROV Valentin, 加藤洌, 加藤洌
応用物理学会春季学術講演会講演予稿集(CD-ROM)   1 Mar 2017