Low-noise quantum cascade lasers and optical antenna probe for near-field Raman spectroscopy
| Project/Area Number |
23560043
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Ritsumeikan University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 量子カスケードレーザ / 光アンテナ / 中赤外 / 近接場 / ラマン分光 / 量子カスケード・レーザ / 強度雑音 / 戻り光誘起雑音 |
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| Research Abstract |
The influence of external feedback on the relative intensity noise of a mid-infrared InGaAs/InAlAs distributed-feedback-quantum cascade lasers was quantitatively clarified for the first time. Next, towards the development of optical antenna probes, mid-infrared optical antennas were fabricated on a Si substrate. The FDTD method can calculate the electric field around an optical antenna, but it is not easy to experimentally discern its distribution normal to the antenna surface. So, a thin Al2O3 layer was deposited on a Si substrate through atomic layer deposition, and dumbbell-shaped slot antennas were made on this substrate. It was possible to grow a layer with the thickness being controlled to an accuracy of ~1 nm. By observing the change in the restrahlen reflection spectras, an understanding of the vertical field distribution could be gained. Obtained results are effective in achieving photo-detectors satisfying both high-sensitivity and high-speed in the mid-infrared range.
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Report
(4 results)
Research Products
(21 results)
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[Presentation] Observation of the enhancement of the electric field normal to the surface of mid-infrared slot antennas
Author(s)
K. Tsushima, S. Mori, Y. Nishimura, K. Hishii, K. Kasahara, T. Yaji, H. Miyazaki, N. Ikeda, M. Ochiai, H. Oosato, and Y. Sugimoto
Organizer
7th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics ( Metamaterials 2013)
Place of Presentation
Bordeaux, France
Related Report
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[Presentation] 中赤外光アンテナ反射率のピッチ幅依存性
Author(s)
森 俊, 西村悠希,川野貴裕, 國近裕太, 笠原健一, 家路豊成, 池田直樹, 杉本喜正
Organizer
平成26年度第61回応用物理学会春季学術講演会
Place of Presentation
神奈川県相模原市青山学院大学
Related Report
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