Research on ultrashort-wavelength vacuum ultraviolet generation by using stimulated Raman scattering

2013 Fiscal Year Final Research Report

• Project/Area Number: 24656048
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Applied optics/Quantum optical engineering
• Research Institution: Osaka University
• Principal Investigator: YOSHIMURA Masashi 大阪大学, 工学(系)研究科(研究院), 准教授 (60314382)
• Co-Investigator(Kenkyū-buntansha): MORI Yusuke 大阪大学, 大学院工学研究科, 教授 (90252618)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Keywords: セシウム・リチウム・ボレート / 非線形光学 / 真空紫外光 / 波長変換 / 誘導ラマン散乱 / アンチストークス光

Research Abstract

We have improved laser-induced damage tolerance of CsLiB6O10 (CLBO), and attempted to construct vacuum-ultraviolet (VUV) laser source below 190 nm as a new pump source of anti-Stokes (AS) stimulated Raman scattering (SRS). By using an Nd:YAG laser, the fifth harmonic and infrared (IR) OPO at 1697.9 nm were generated via several frequency conversion stages. At the final stage, VUV light below 190 nm was generated by sum-frequency generation with the fifth-harmonic and IR in a CLBO. A 189 nm output was produced with a conversion efficiency of 7.3% from the 213 nm input. Based on the experimental result, we have newly designed VUV laser system at 185 nm using a 20-W Nd:YAG laser with high-peak power density. Although we are currently constructing the final stage in the system, we estimate the average power over 100 mW at 185 nm and expect ultrashort-wavelength VUV radiation by SRS in H2 such as 1st, 3rd, and 8th AS lines at 172, 150, and 115 nm.

Research Products

• [Journal Article] Sub-180 nm generation with borate crystal (2014)
  • Author(s): C. Qu, M. Yoshimura, J. Tsunoda, Y. Kaneda, M. Imade, T. Sasaki, and Y. Mori
  • Journal Title: Optical Materials Volume: (In Press)
  • DOI: 10.1016/j.optmat.2014.01.021
  • Peer Reviewed
• [Journal Article] Ultraviolet laser-induced degradation of CsLiB_6O_<10> andβ-BaB_2O_4 (2014)
  • Author(s): K. Takachiho, M. Yoshimura, Y. Takahashi, M. Imade, T. Sasaki, and Y. Mori
  • Journal Title: Optical Materials Express Volume: Vol.4, Issue 3 Pages: 559-567
  • Peer Reviewed
• [Journal Article] 不純物・欠陥制御を用いた非線形光学結晶CsLiB_6O_<10>の紫外レーザー損傷耐性向上 (2013)
  • Author(s): 高千穂慧, 吉村政志, 増田一稀, 高橋義, 今出完, 佐々木孝友, 森勇介
  • Journal Title: レーザー研究 Volume: Vol.41, No.10 Pages: 830-834
  • Peer Reviewed
• [Journal Article] Al doping of CsLiB_6O_<10> for high resistance to ultraviolet-induced degradation (2013)
  • Author(s): K. Takachiho, M. Yoshimura, Y. Fukushima, Y. Takahashi, M. Imade, T. Sasaki, and Y. Mori
  • Journal Title: Applied Physics Express Volume: Vol.6, No.2 Pages: 022701-1-3
  • Peer Reviewed
• [Journal Article] Phase-matching properties at around 190 nm of various borate crystals (2012)
  • Author(s): C. Qu, M. Yoshimura, J. Tsunoda, K. Zhang, Y. Kaneda, M. Imade, T. Sasaki, and Y. Mori
  • Journal Title: Applied Physics Express Volume: Vol.5, No.6 Pages: 02601-1-3
  • Peer Reviewed
• [Presentation] 非線形光学結晶CLBO, BBOの紫外光誘起経時劣化特性 (2014)
  • Author(s): 高千穂慧, 吉村政志, 高橋義典, 今出完, 佐々木孝友, 森勇介
  • Organizer: 第61回応用物理学会春季学術講演会
  • Place of Presentation: 青山学院大学相模原キャンパ
  • Year and Date: 2014-03-18
• [Presentation] 波長変換結晶CLBO, BBOの紫外光誘起経時劣化特性 (2014)
  • Author(s): 高千穂慧, 高橋義典, 今出完, 吉村政志, 佐々木孝友, 森勇介
  • Organizer: レーザー学会学術講演会第34回年次大会
  • Place of Presentation: 北九州国際会議
  • Year and Date: 2014-01-22
• [Presentation] Recent progress in nonlinear optical crystal CsLiB_6O_<10> (2014)
  • Author(s): Y. Mori, M. Yoshimura, T. Sasaki, and Y. Takahashi
  • Organizer: International Symposium on Nanophotonics and Nanomaterials 2014 (ISONP2014)
  • Place of Presentation: Beijing, China
  • Year and Date: 2014-01-16
• [Presentation] Improvement of UV laser-induced degradation resistance of CsLiB_6O_<10> (2013)
  • Author(s): K. Masuda, M. Yoshimura, K. Takachiho, Y. Takahashi, M. Imade, T. Sasaki, and Y. Mori
  • Organizer: The 6th International Symposium on Lasers Scintillators and Non-Linear Optical Materials (ISLNOM-6)
  • Place of Presentation: Shanghai, China
  • Year and Date: 2013-10-22
• [Presentation] VUV generation below 200 nm with borate crystals (2013)
  • Author(s): C. Qu, M. Yoshimura, J. Tsunoda, Y. Kaneda, M. Imade, T. Sasaki, and Y. Mori
  • Organizer: The 6th International Symposium on Lasers Scintillators and Non-Linear Optical Materials (ISLNOM-6)
  • Place of Presentation: Shanghai, China
  • Year and Date: 2013-10-22
• [Presentation] Recent progress in nonlinear optical crystal CsLiB_6O_<10> (2013)
  • Author(s): Y. Mori, M. Yoshimura, T. Sasaki, Y. Takahashi
  • Organizer: The 6th International Symposium on Lasers Scintillators and Non-Linear Optical Materials (ISLNOM-6)
  • Place of Presentation: Shanghai, China
  • Year and Date: 2013-10-21
• [Presentation] VUV Light Generation with CsLiB6O10 and LiB_3O_5 (2013)
  • Author(s): C. Qu, M. Yoshimura, J. Tsunoda, Y. Kaneda, M. Imade, T. Sasaki, and Y. Mori
  • Organizer: JSAP-OSA Joint Symposia 2013
  • Place of Presentation: Doshisha University
  • Year and Date: 2013-09-18
• [Presentation] The correlation between optical properties and electrical properties of CsLiB_6O_<10> crystal (2013)
  • Author(s): Z. Lu, M. Yoshimura, Y. Takahashi, M. Imade, T. Sasaki, and Y. Mori
  • Organizer: JSAP-OSA Joint Symposia 2013
  • Place of Presentation: Doshisha University
  • Year and Date: 2013-09-18
• [Presentation] The correlation of point defects and UV induced degradation of CsLiB_6O_<10> (2013)
  • Author(s): K. Masuda, M. Yoshimura, K. Takachiho, Y. Takahashi, M. Imade, T. Sasaki and Y. Mori
  • Organizer: JSAP-OSA Joint Symposia 2013
  • Place of Presentation: Doshisha University
  • Year and Date: 2013-09-18
• [Presentation] Impurity control of CsLiB_6O_<10> for improving UV-induced damage tolerance (2013)
  • Author(s): K. Takachiho, M. Yoshimura, K. Masuda, Y. Takahashi, M. Imade, T. Sasaki, and Y. Mori
  • Organizer: 17th International Conference on Crystal Growth and Epitaxy - ICCGE-17
  • Place of Presentation: Warsaw, Poland
  • Year and Date: 2013-08-15
• [Presentation] 波長変換結晶CLBO, BBOの266nm紫外光損傷に関する研究 (2013)
  • Author(s): 吉村政志, 高千穂慧, 増田一稀, 高橋義典, 佐々木孝友, 森勇介
  • Organizer: レーザー学会第445回研究会「高機能固体レーザーとその応用」
  • Place of Presentation: 大阪
  • Year and Date: 2013-07-16
• [Presentation] 179 nm generation with borate crystal (2013)
  • Author(s): C. Qu, M. Yoshimura, J. Tsunoda, Y. Kaneda, M. Imade, T. Sasaki, and Y. Mori
  • Organizer: The 10th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR&OECC/PS) 2013
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 2013-07-06
• [Presentation] UV laser-induced degradation in CsLiB_6O_<10> (2013)
  • Author(s): K. Takachiho, M. Yoshimura, K. Masuda, Y. Takahashi, M. Imade, T. Sasaki, and Y. Mori
  • Organizer: The 10th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR&OECC/PS) 2013
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 2013-07-03
• [Presentation] Ultraviolet laser-induced degradation in CsLiB_6O_<10> (2013)
  • Author(s): M. Yoshimura, K. Takachiho, Y. Takahashi, T. Sasaki, and Y. Mori
  • Organizer: The 2nd Advance Lasers and Photon Sources (ALPS'13)
  • Place of Presentation: Yokohama, Kanagawa
  • Year and Date: 2013-04-25
• [Presentation] VUV light generation with borate crystals (2013)
  • Author(s): C. Qu, M. Yoshimura, J. Tsunoda, Y. Kaneda, M. Imade, T. Sasaki, and Y. Mori
  • Organizer: The 2nd Advance Lasers and Photon Sources (ALPS'13)
  • Place of Presentation: Yokohama, Kanagawa
  • Year and Date: 2013-04-24
• [Presentation] 非線形光学結晶CLBOの不純物制御と紫外光発生応用 (2013)
  • Author(s): 吉村政志, 高橋義典, 佐々木孝友, 森勇介
  • Organizer: レーザー学会学術講演会第33回年次大会
  • Place of Presentation: 姫路商工会議所, 兵庫
  • Year and Date: 2013-01-28
• [Presentation] Development of CsLiB_6O_<10> for vacuum-UV light generation (2012)
  • Author(s): M. Yoshimura, Y. Takahashi, T. Sasaki, and Y. Mori
  • Organizer: The Third China-Japan Crystal Growth and Technology Symposium
  • Place of Presentation: Hefei, China
  • Year and Date: 2012-10-20
• [Presentation] ボレート系結晶を用いた深紫外・真空紫外光発生 (2012)
  • Author(s): 吉村政志, 森勇介, 佐々木孝友
  • Organizer: 日本結晶成長学会バルク成長分科会第85回研究会
  • Place of Presentation: 大阪
  • Year and Date: 2012-05-25
• [Presentation] 189-nm wavelength generation with borate crystals (2012)
  • Author(s): C. Qu, M. Yoshimura, J. Tsunoda, Y. Kaneda, M. Imade, T. Sasaki, and Y. Mori
  • Organizer: Conference on Laser and Electro-Optics 2012 (CLEO2012)
  • Place of Presentation: San Jose, USA
  • Year and Date: 2012-05-11
• [Presentation] Al-doping in CsLiB_6O_<10> for high resistance against UV laser-induced damage (2012)
  • Author(s): K. Takachiho, M. Yoshimura, Y. Fukushima, Z. Lu, Y. Takahashi, T. Sasaki, and Y. Mori
  • Organizer: Conference on Laser and Electro-Optics 2012 (CLEO2012)
  • Place of Presentation: San Jose, USA
  • Year and Date: 2012-05-10
• [Book] Nonlinear Optical Borate Crystals (2012)
  • Author(s): M. Yoshimura, T. Sasaki, and Y. Mori
  • Publisher: Wiley-VCH