Search for the blue-detuned magic wavelength for the ytterbium optical lattice clock

• Project/Area Number: 23540472
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: YASUDA Masami 独立行政法人産業技術総合研究所, 計測標準研究部門, 研究室付 (50322045)
• Co-Investigator(Kenkyū-buntansha): AKAMATSU Daisuke 独立行政法人産業技術総合研究所, 計測標準研究部門, 主任研究員 (90549883)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2013: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
• Keywords: 光格子時計 / イッテルビウム / 絶対周波数計測 / 光周波数コム / 青方離調魔法波長 / 光コム

Research Abstract

In order to reduce the uncertainty of the ytterbium (Yb) optical lattice clock due to the optical lattice laser, we tried to search for the blue-detuned magic wavelength of Yb and obtained the following results; 1: We have succeeded in improving our Yb optical lattice clock, reducing the uncertainty to 1/10 of that of our 2009 measurement, which led to the adaption of the Yb optical lattice clock as one of the secondary representation of the second. 2: We have succeeded in measuring the frequency ratio of the Yb and Sr optical lattice clocks by directly comparing the optical frequencies by an optical frequency comb, which allows us to measure the light shift frequency with ten times smaller integration time compared to the measurement with a microwave frequency standard. 3: We have developed a blue laser source for inducing the light shift to the clock transition of Yb. We have obtained the 100 mW of 399 nm laser by a second harmonic generation of the amplified infrared laser diode.

Research Products

• [Journal Article] Frequency ratio measurement of 171Yb and 87Sr optical lattice clocks (2014)
  • Author(s): Daisuke Akamatsu, Masami Yasuda, Hajime Inaba, Kazumoto Hosaka, Takehiko Tanabe, Atsushi Onae, Feng-Lei Hong
  • Journal Title: Optics Express Volume: Vol.22 Pages: 7898-7905
  • Peer Reviewed
• [Journal Article] Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock towards a Candidate for the Redefinition of the Second (2012)
  • Author(s): Masami Yasuda, Hajime Inaba, Takuya Kohno, Takehiko Tanabe, Yoshiaki Nakajima, Kazumoto Hosaka, Daisuke Akamatsu, Atsushi Onae, Tomonari Suzuyama, Masaki Amemiya, Feng-Lei Hong
  • Journal Title: Applied Physics Express Volume: Vol.5 Issue: 10 Pages: 102401-102401
  • DOI: 10.1143/apex.5.102401
  • NAID: 10031117548
  • Peer Reviewed
• [Journal Article] 産総研におけるイッテルビウム光格子時計開発の現状 (2011)
  • Author(s): 安田正美, 河野託也, 保坂一元, 稲場肇, 中嶋善晶, 赤松大輔, 大苗敦, 洪鋒雷
  • Journal Title: 電気学会誌 Volume: ECT-11巻 Pages: 7-10
  • NAID: 10029662191
• [Journal Article] 産総研におけるイッテルビウム光格子時計開発の現状 (2011)
  • Author(s): 安田正美、河野託也、保坂一元、稲場肇、中嶋善晶、赤松大輔、大苗敦、洪鋒雷
  • Journal Title: 電気学会誌 Volume: ECT-11 Pages: 7-10
  • NAID: 10029662191
• [Presentation] Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock towards the Redefinition of the Second (2013)
  • Author(s): Masami Yasuda, Hajime Inaba, Takuya Kohno, Takehiko Tanabe, Yoshiaki Nakajima, Kazumoto Hosaka, Daisuke Akamatsu, Atsushi Onae, Tomonari Suzuyama, Masaki Amemiya, Feng-Lei Hong
  • Organizer: CLEO2013
  • Place of Presentation: San Jose Convention Center, San Jose, CA, USA
  • Year and Date: 2013-06-11
• [Presentation] 秒の再定義に向けたイッテルビウム光格子時計の絶対周波数測定 (2013)
  • Author(s): 安田正美, 稲場肇, 河野託也, 田邊健彦, 中嶋善晶, 保坂一元, 赤松大輔, 大苗敦, 鈴山智也, 雨宮正樹, 洪鋒雷
  • Organizer: 日本物理学界第68回年次大会
  • Place of Presentation: 広島大学(広島県)
  • Year and Date: 2013-03-26
• [Presentation] Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock for the Redefinition of the Second (2013)
  • Author(s): Masami Yasuda, Hajime Inaba, Takuya Kohno, Takehiko Tanabe, Yoshiaki Nakajima, Kazumoto Hosaka, Daisuke Akamatsu, Atsushi Onae, Tomonari Suzuyama, Masaki Amemiya, Feng-Lei Hong
  • Organizer: NICT Workshop on the Optical Frequency Standards
  • Place of Presentation: 情報通信研究機構(東京都)
  • Year and Date: 2013-02-07
• [Presentation] Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock towards the Secondary Representation of the Second (2012)
  • Author(s): Masami Yasuda, Hajime Inaba, Takuya Kohno, Takehiko Tanabe, Yoshiaki Nakajima, Kazumoto Hosaka, Daisuke Akamatsu, Atsushi Onae, Tomonari Suzuyama, Masaki Amemiya, Feng-Lei Hong
  • Organizer: 第5回極低温グループII原子国際会議
  • Place of Presentation: 情報通信研究機構(東京都)
  • Year and Date: 2012-10-11
• [Presentation] Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock at NMIJ (2012)
  • Author(s): Masami Yasuda, Hajime Inaba, Takuya Kohno, Takehiko Tanabe, Yoshiaki Nakajima, Kazumoto Hosaka, Daisuke Akamatsu, Atsushi Onae, Tomonari Suzuyama, Masaki Amemiya, Feng-Lei Hong
  • Organizer: 光コム, 光時計及び関連デバイスワークショップ
  • Place of Presentation: 産総研つくばセンター(茨城県)
  • Year and Date: 2012-10-03
• [Presentation] Progress of the 171Yb Optical Lattice Clock at NMIJ, AIST (2012)
  • Author(s): Masami Yasuda, Hajime Inaba, Takuya Kohno, Takehiko Tanabe, Yoshiaki Nakajima, Kazumoto Hosaka, Daisuke Akamatsu, Atsushi Onae, Tomonari Suzuyama, Masaki Amemiya, Feng-Lei Hong
  • Organizer: CLEO2012
  • Place of Presentation: San Jose Convention Center, San Jose, CA, USA
  • Year and Date: 2012-05-10
• [Presentation] 産総研におけるイッテルビウム光格子時計開発の現状 (2011)
  • Author(s): 安田正美, 河野託也, 保坂一元, 稲場肇, 中嶋善晶, 赤松大輔, 大苗敦, 洪鋒雷
  • Organizer: 電気学会・電子回路研究会
  • Place of Presentation: 早稲田大学(東京都)
  • Year and Date: 2011-09-06
• [Presentation] Current status of the 171Yb optical lattice clock at NMIJ, AIST (2011)
  • Author(s): Masami Yasuda, Takuya Kohno, Kazumoto Hosaka, Hajime Inaba, Yoshiaki Nakajima, Atsushi Onae, Feng-Lei Hong
  • Organizer: SPIE
  • Place of Presentation: San Diego Convention Center, San Diego, CA, USA
  • Year and Date: 2011-08-25
  • Invited
• [Presentation] Current status of the 171Yb optical lattice clock at NMIJ, AIST (2011)
  • Author(s): M. Yasuda, T. Kohno, K. Hosaka, H. Inaba, Y. Nakajima, A. Onae, F.-L. Hong
  • Organizer: SPIE(招待講演)
  • Place of Presentation: San Diego Convention Center, San Diego, CA, USA
• [Presentation] 産総研におけるイッテルビウム光格子時計開発の現状 (2011)
  • Author(s): 安田正美、河野託也、保坂一元、稲場肇、中嶋善晶、赤松大輔、大苗敦、洪鋒雷
  • Organizer: 電気学会・電子回路研究会
  • Place of Presentation: 早稲田大学（東京都）
• [Presentation] Progress of the 171Yb Optical Lattice Clock at NMIJ, AIST
  • Author(s): M. Yasuda, H. Inaba, T. Kohno, T. Tanabe, Y. Nakajima, K. Hosaka, D. Akamatsu, A. Onae, T. Suzuyama, M. Amemiya, F.-L. Hong
  • Organizer: CLEO2012
  • Place of Presentation: San Jose, USA
• [Presentation] Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock at NMIJ
  • Author(s): M. Yasuda, H. Inaba, T. Kohno, T. Tanabe, Y. Nakajima, K. Hosaka, D. Akamatsu, A. Onae, T. Suzuyama, M. Amemiya, F.-L. Hong
  • Organizer: 光コム、光時計及び関連デバイスワークショップ
  • Place of Presentation: 産総研つくばセンター（茨城県）
• [Presentation] Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock towards the Secondary Representation of the Second
  • Author(s): M. Yasuda, H. Inaba, T. Kohno, T. Tanabe, Y. Nakajima, K. Hosaka, D. Akamatsu, A. Onae, T. Suzuyama, M. Amemiya, F.-L. Hong
  • Organizer: 第5回極低温グループII原子国際会議
  • Place of Presentation: 情報通信研究機構（東京都）
• [Presentation] Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock for the Redefinition of the Second
  • Author(s): M. Yasuda, H. Inaba, T. Kohno, T. Tanabe, Y. Nakajima, K. Hosaka, D. Akamatsu, A. Onae, T. Suzuyama, M. Amemiya, F.-L. Hong
  • Organizer: NICT Workshop on the Optical Frequency Standards
  • Place of Presentation: 情報通信研究機構（東京都）
• [Presentation] 秒の再定義に向けたイッテルビウム光格子時計の絶対周波数測定
  • Author(s): 安田正美、稲場肇、河野託也、田邊健彦、中嶋善晶、保坂一元、赤松大輔、大苗敦、鈴山智也、雨宮正樹、洪鋒雷
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学（広島県）