Realization of High-Performance and Farinfrared/Teraherz Quantum Cascade Lasers through Electron-Scattering Control

• Project/Area Number: 20560040
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied optics/Quantum optical engineering
• Research Institution: Ritsumeikan University
• Principal Investigator: KASAHARA Kenichi Ritsumeikan University, 理工学部, 教授 (70367994)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2008: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
• Keywords: 量子カスケード / 光デバイス / テラヘルツ / 環境 / 生命科学 / 量子カスケードレーザ

Research Abstract

Control of electron scattering is a key to achieve high-performance and farinfrared/terahertz quantum cascade lasers (QCLs) which are expected as light sources applicable to environmental gas monitoring and life science. Information on the electron scattering can be obtained by investigating the line enhancement factor α and relative intensity noise (RIN) of QCLs. Measurement of α provided us the knowledge of the non parabolicity of subbands in the conduction band and the Bloch gain. We could gain information on nonradiative relaxation time through the measurement of RIN dependence on optical output power and temperatures. We also analyzed a diagonal transition miniband structure for realizing farinfrared/terahertz QCLs. Since electron-electron scattering is proportional to the fourth power and optical transition the square of the overlap of wave functions, it is possible to reduce electron-electron scattering by using the diagonal transition.

Research Products

• [Journal Article] Linewidth Enhancement Factor of Quantum Cascade Lasers with a Single Phonon Resonance-Continuum Depopulation Structure on a Peltier Cooler (2009)
  • Author(s): M.Ishihara、T.Morimoto、S.Furuta、K.Kasahara、N.Akikusa、K.Fujita, T.Edamura
  • Journal Title: Electron.Lett. 45 Pages: 1168-1169
  • Peer Reviewed
• [Journal Article] 量子カスケードレーザの相対雑音強度 (2009)
  • Author(s): 片岡誉,笠原健一、秋草直大、枝村忠孝
  • Journal Title: 信学技報 109 Pages: 41-44
• [Journal Article] Linewidth Enhancement Factor of Quantum Cascade Lasers with a Single Phonon Resonance-Continuum Depopulation Structure on a Peltier Cooler (2009)
  • Author(s): M.Ishihara, T.Morimoto, S.Furuta, K.Kasahara, N.Akikusa, K.Fujita, T.Edamura
  • Journal Title: Electron.Lett. Vol.45 Pages: 1168-1169
  • Peer Reviewed
• [Journal Article] First Direct Observation of the Small Linewidth Enhancement Factor of a Fabry-Perot Quantum Cascade Laser (2008)
  • Author(s): N.Kumazaki、Y.Takagi、M.Ishihara、K.Kasahara、N.Akikusa, T.Edamura
  • Journal Title: Jpn.J.Appl.Phys. 47 Pages: 1606-1608
  • NAID: 210000064302
  • Peer Reviewed
• [Journal Article] Detuning Characteristics of the Linewidth Enhancement Factor of a Mid-infrared Quantum Cascade Laser (2008)
  • Author(s): N.Kumazaki、Y.Takagi、M.Ishihara、K.Kasahara、A.Sugiyama、N.Akikusa, T.Edamura
  • Journal Title: Appl.Phys.Lett. 92
  • Peer Reviewed
• [Journal Article] Relative Intensity Noise Properties between a 5.2μm Quantum Cascade Laser and a 1.55μm Interband Semiconductor laser (2008)
  • Author(s): Y.Takagi, N.Kumazaki、M.Ishihara、K.Kasahara、A.Sugiyama、N.Akikusa, T.Edamura
  • Journal Title: Electron.Lett. 44 Pages: 860-861
  • Peer Reviewed
• [Journal Article] 量子カスケード・レーザの現状と展望 (2008)
  • Author(s): 笠原健一
  • Journal Title: 京都府中小企業技術センター技報 36 Pages: 45-48
• [Journal Article] Detuning Characteristics of the Linewidth Enhancement Factor of a Mid-infrared Quantum Cascade Laser (2008)
  • Author(s): N. Kumazaki, et al.
  • Journal Title: Appl. Phys. Lett. Vol. 92
  • Peer Reviewed
• [Journal Article] Relative Intensity Noise Properties between a 5.2 μm Quantum Cascade Laser and a 1.55 μM Interband Semiconductor laser (2008)
  • Author(s): Y. Takagi, et al.
  • Journal Title: Electron. Lett. Vol. 44 Pages: 860-861
  • Peer Reviewed
• [Journal Article] Spectral Behavior of the Linewidth Enhancement Factor of a Mid-infrared Quantum Cascade Laser (2008)
  • Author(s): N. Kumazaki, et al.
  • Journal Title: Jpn. J. Appl. Phys. Vol. 47 Pages: 6320-6326
  • Peer Reviewed
• [Presentation] ペルチェ動作量子カスケード・レーザの戻り光耐性評価 (2011)
  • Author(s): 井上智晴、片岡誉、笠原健一、藤田和上、秋草直大、枝村忠孝
  • Organizer: 平成23年度秋季第応用物理学関係連合講演会
  • Place of Presentation: 神奈川工科大学(神奈川県)
  • Year and Date: 2011-03-26
• [Presentation] ペルチェ動作量子カスケード・レーザの相対強度雑音の検討(II) (2010)
  • Author(s): 井上智晴、片岡誉、笠原健一、藤田和上、秋草直大、枝村忠孝
  • Organizer: 平成22年度秋季第応用物理学関係連合講演会
  • Place of Presentation: 長崎大学(長崎県)
  • Year and Date: 2010-09-17
• [Presentation] Photon noise of peltier-cooled 6.1-μm quantum cascade lasers with a single phonon resonance-continuum depopulation structure (2010)
  • Author(s): T.Kataoka、K.Kasahara、N Akikusa、K Fujita, T Edamura
  • Organizer: Photon 10
  • Place of Presentation: Southampton(UK)
  • Year and Date: 2010-08-25
• [Presentation] Photon noise of peltier-cooled 6.1-μm quantum cascade lasers with a single phon on resonance-continuum depopulation structure (2010)
  • Author(s): T.Kataoka, K Kasahara, N Akikusa, K Fujita, T Edamura
  • Organizer: Photon 10
  • Place of Presentation: Southampton(UK)
  • Year and Date: 2010-08-25
• [Presentation] ペルチェ動作量子カスケード・レーザの低電流域での相対強度雑音 (2010)
  • Author(s): 片岡誉、森本恭弘、古田俊、笠原健一、藤田和上、秋草直大、枝村忠孝
  • Organizer: 平成22年度春季第応用物理学関係連合講演会
  • Place of Presentation: 東海大学(神奈川県)
  • Year and Date: 2010-03-19
• [Presentation] ペルチェ動作量子カスケード・レーザの低電流域での相対強度雑音 (2010)
  • Author(s): 片岡誉, 森本恭弘, 古田俊, 笠原健一, 藤田和上, 秋草直大, 枝村忠孝
  • Organizer: 平成22年度春季第応用物理学関係連合講演会
  • Place of Presentation: 東海大学(神奈川)
  • Year and Date: 2010-03-19
• [Presentation] 量子カスケードレーザの相対雑音強度 (2009)
  • Author(s): 片岡誉, 笠原健一, 秋草直大, 枝村忠孝
  • Organizer: 電子情報通信学会技術研究報告
  • Place of Presentation: 機械振興会館(東京都)
  • Year and Date: 2009-12-11
• [Presentation] ペルチェ動作6.1μm量子カスケードレーザの相対強度雑音 (2009)
  • Author(s): 片岡誉、森本恭弘、古田俊、笠原健一、藤田和上、秋草直大、枝村忠孝
  • Organizer: 平成21年度秋季第応用物理学関係連合講演会
  • Place of Presentation: 富山大学(富山)
  • Year and Date: 2009-09-11
• [Presentation] ペルチェ動作6.1μm量子カスケードレーザの相対強度雑音 (2009)
  • Author(s): 片岡誉, 森本恭弘, 古田俊, 笠原健一, 藤田和上, 秋草直大, 枝村忠孝
  • Organizer: 平成21年度秋季第応用物理学関係連合講演会
  • Place of Presentation: 富山大学(富山県)
  • Year and Date: 2009-09-11
• [Presentation] 量子カスケード・レーザにおける利得スペクトルの考察 (2009)
  • Author(s): 森本恭弘, 他
  • Organizer: 平成20年度秋季応用物理学関係連合講演会
  • Place of Presentation: 愛知県中部
  • Year and Date: 2009-09-02
• [Presentation] Linewidth Enhancement Factor of 6.1-μm Quantum Cascade Laser at Near Room-Temperature (2009)
  • Author(s): M.Ishihara、T.Morimoto、S.Furuta、K.Kasahara、N.Akikusa、K.Fujita、T.Edamura
  • Organizer: CLEO Pacific Rim 2009
  • Place of Presentation: 上海(中国)
  • Year and Date: 2009-09-01
• [Presentation] Linewidth Enhancement Factor of 6.1-μm Quantum Cascade Laser at Near Room-Temperature (2009)
  • Author(s): M.Ishihara, T.Morimoto, S.Furuta, K.Kasahara, N.Akikusa, K.Fujita, T.Edamura
  • Organizer: CLEO Pacific Rim
  • Place of Presentation: Shanghai(China)
  • Year and Date: 2009-09-01
• [Presentation] サブバンド非放物線性と散乱を考慮した量子カスケード・レーザの線幅増大係数 (2009)
  • Author(s): 森本恭弘、古田峻、石原幹斗、片岡誉、笠原健一、秋草直大、枝村忠孝
  • Organizer: 平成21年度春季第応用物理学関係連合講演会
  • Place of Presentation: 筑波大学(茨城県)
  • Year and Date: 2009-04-02
• [Presentation] 室温動作DFB型量子カスケード・レーザの線幅増大係数の測定 (2009)
  • Author(s): 石原幹斗、古田峻、森本恭弘、笠原健一、秋草直大、藤田和上、枝村忠孝
  • Organizer: 平成21年度春季第応用物理学関係連合講演会
  • Place of Presentation: 筑波大学(茨城県)
  • Year and Date: 2009-04-02
• [Presentation] サブバンド非放物線性と散乱を考慮した量子カスケード・レーザの線幅増大係数 (2009)
  • Author(s): 森本恭弘, 他
  • Organizer: 平成21年度春季応用物理学関係連合講演会
  • Place of Presentation: 茨城県筑波大学
  • Year and Date: 2009-04-02
• [Presentation] 室温動作DFB型量子カスケード・レーザの線幅増大係数の測定 (2009)
  • Author(s): 石原幹斗, 他
  • Organizer: 平成21年度春季応用物理学関係連合講演会
  • Place of Presentation: 茨城県筑波大学
  • Year and Date: 2009-04-02
• [Presentation] 量子カスケード・レーザにおける利得スペクトルの考察 (2008)
  • Author(s): 森本恭弘、古田峻、石原幹斗、笠原健一、秋草直大、枝村忠孝
  • Organizer: 平成20年度秋季第応用物理学関係連合講演会
  • Place of Presentation: 中部大学(愛知県)
  • Year and Date: 2008-09-02
• [Presentation] Detuning Characteristics of the Linewidth Enhancement Factor of a Mid-infrared Quantum Cascade Laser (2008)
  • Author(s): N.Kumazaki、Y.Takagi、M.Ishihara、K.Kasahara、A.Sugiyama、N.Akikusa、T.Edamura
  • Organizer: Conf.on Laser and Electrooptics
  • Place of Presentation: San Jose (USA)
  • Year and Date: 2008-05-08
• [Presentation] Detuning Characteristics of the Linewidth Enhancement Factor of a Mid-infrared Quantum Cascade Laser JThA17, Poster Session III, 2008. (2008)
  • Author(s): N. Kumazaki, et al.
  • Organizer: CLEO 2008
  • Place of Presentation: San Jose, CA(USA)
  • Year and Date: 2008-05-07