Studies of high temperature operation THz QCLs by modulation barriers structure

• Project/Area Number: 15K18059
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Electron device/Electronic equipment
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: Lin Tsung-Tse 国立研究開発法人理化学研究所, 光量子工学研究領域, 研究員 (40585155)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 量子カスケードレーザー / テラヘルツ

Outline of Final Research Achievements

Here we utilize the modulation barriers active region designe with different barriers and wells height at one period of THz QCLs. In order to realize the difficult alternative consideration of barriers height at injection/extraction and emission layers. The wide-low barriers at emission layers reduce the non-radiative interface roughness (IR) scattering and keep the high optical gain. And the thin-high barriers improve the injection/extraction efficiency by the same IR scattering at injection/extraction layers. We demonstrate the first experimental results of high temperature operation THz QCLs designed by this kind of variable height structure. We also report the high output power THz QCLs with peak power 250 mW and average power 2.2 mW at low temperature; fabricate the compact potable 77K liquid nitrogen temperature Dewar condenser by THz QCLs with peak power 10 mW and average power 0.1 mW.

Research Products

• [Journal Article] テラヘルツ量子カスケードレーザーの進展 (2016)
  • Author(s): 平山 秀樹，寺嶋 亘，林 宗澤
  • Journal Title: レーザー研究 Volume: 44 Pages: 520-526
  • NAID: 130007957296
  • Peer Reviewed
• [Journal Article] The improvement of output power characteristics of THz QCLs in 77 K Dewar condenser (2015)
  • Author(s): 林 宗澤 , 寺嶋 亘 , 平山 秀樹
  • Journal Title: 信学技報, IEICE technical report Volume: 115 Pages: 37-40
• [Journal Article] テラヘルツ量子カスケードレーザーの進展と今後の展望 (2015)
  • Author(s): 平山 秀樹、寺嶋 亘、林 宗澤、佐々木 美穂
  • Journal Title: 応用物理 Volume: 84 Pages: 918-923
  • NAID: 10031104445
  • Peer Reviewed
• [Presentation] 高出力THz QCLの進展 (2017)
  • Author(s): 林 宗澤、 平山 秀樹
  • Organizer: NICT理研合同テラヘルツ研究交流会
  • Place of Presentation: NICT小金井本部 3号館1階（東京都小金井市）
  • Year and Date: 2017-02-27
• [Presentation] Recent Progress of GaN-based Terahertz Quantum Cascade Lasers (2016)
  • Author(s): Wataru Terashima, Tsung-Tse Lin and Hideki Hirayama
  • Organizer: 5th Russia-Japan-USA-Europe Symposium on Fundamental & Applied Problems of Terahertz Devices & Technologies
  • Place of Presentation: 東北大学片平さくらホール（宮城県仙台市）
  • Year and Date: 2016-10-31
  • Int'l Joint Research / Invited
• [Presentation] THz quantum cascade lasers toward high output power near liquid nitrogen temperature operation with Dewar condenser (2016)
  • Author(s): Tsung-Tse Lin, Wataru Terashima, and Hideki Hirayama
  • Organizer: The 41st International Conference on Infrared, Millimeter, and Terahertz Waves
  • Place of Presentation: Copenhagen, Denmark
  • Year and Date: 2016-09-25
  • Int'l Joint Research
• [Presentation] Progress of THz Quantum Cascade Lasers using Nitride Semiconductor (2016)
  • Author(s): H. Hirayama, W. Terashima, T. -T. Lin, S. Toyoda and N. Kamata
  • Organizer: 74th Device Research Conference
  • Place of Presentation: Newark, Delaware, USA
  • Year and Date: 2016-06-19
  • Int'l Joint Research / Invited
• [Presentation] Modulation Active Structure Design Indirect Injection Sheme THz QCLs (2016)
  • Author(s): Tsung-Tse Lin, Hideki Hirayama
  • Organizer: EMN meeting on terahertz
  • Place of Presentation: San Sebastian, Spain
  • Year and Date: 2016-05-14
  • Int'l Joint Research / Invited
• [Presentation] 77 K動作THz-QCLの高出力化の試み (2016)
  • Author(s): 林 宗澤, 寺嶋 亘,平山 秀樹
  • Organizer: 第63回 春季応用物理学会学術講演会
  • Place of Presentation: 東工大（東京、目黒）
  • Year and Date: 2016-03-19
• [Presentation] 77 KデュワータイプTHz-QCLの高出力化 (2015)
  • Author(s): 林 宗澤, 平山 秀樹
  • Organizer: 電子デバイス研究会(ミリ波・テラヘルツ波デバイス・システム)
  • Place of Presentation: 東北大（宮城、仙台）
  • Year and Date: 2015-12-21
• [Presentation] Indirect injection scheme THz QCLs with high operation temperature (2015)
  • Author(s): Tsung-Tse Lin, Hideki Hirayama
  • Organizer: EMN meeting on Vacuum Electronics
  • Place of Presentation: Las Vegas, USA
  • Year and Date: 2015-11-21
  • Int'l Joint Research / Invited
• [Presentation] 間接注入機構を用いたTHz QCL高温動作の進展 (2015)
  • Author(s): 林 宗澤、平山 秀樹
  • Organizer: 理研シンポジ ウム第3回「光量子工学研究」
  • Place of Presentation: 理研（埼玉、和光）
  • Year and Date: 2015-11-12
  • Invited
• [Presentation] モジュレーションバリア構造を用いた3.7THz 145 K量子カスケードレーザ (2015)
  • Author(s): 林 宗澤, 平山 秀樹
  • Organizer: 第76回応用物理学会学術講演会
  • Place of Presentation: 名古屋国際会議場（愛知、名古屋）
  • Year and Date: 2015-09-13
• [Presentation] Modulation barrier design AlxGa1-xAs/GaAs terahertz quantum cascade lasers (2015)
  • Author(s): Tsung-Tse Lin, Hideki Hirayama
  • Organizer: The 13th International Conference on Intersubband Transitions in Quantum Wells
  • Place of Presentation: Vienna, Austria
  • Year and Date: 2015-09-06
  • Int'l Joint Research
• [Presentation] AlGaAs/GaAs quantum cascade lasers with modulation Al composition barriers design lasing at 3.7 THz, 145 K (2015)
  • Author(s): Tsung-Tse Lin, Hideki Hirayama
  • Organizer: The Second International Symposium on Frontiers in THz Technology
  • Place of Presentation: Hamamatsu, Japan
  • Year and Date: 2015-08-30
  • Int'l Joint Research
• [Presentation] テラヘルツ量子カスケードレーザの最近の進展 (2015)
  • Author(s): 林 宗澤, 寺嶋 亘, 平山 秀樹
  • Organizer: 電気学会 電子・情報・システム部門大会
  • Place of Presentation: 長崎大（長崎、長崎）
  • Year and Date: 2015-08-26
• [Book] "(chapter) THz QCLs Design Toward Real Applications"Quantum Cascade Lasers (QCLs): Types and Applications (2016)
  • Author(s): Tsung-Tse Lin
  • Total Pages: 21
  • Publisher: Nova Science Publishers, Inc.
• [Book] "(chapter) THz QCLs Design Toward Real Applications" Quantum Cascade Laser (2016)
  • Author(s): Tsung-Tse Lin
  • Total Pages: 22
  • Publisher: InTech Publishers, Inc.