JP6084622B2 - 量子井戸層を有するデバイス - Google Patents
量子井戸層を有するデバイス Download PDFInfo
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- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
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- G02B6/29335—Evanescent coupling to a resonator cavity, i.e. between a waveguide mode and a resonant mode of the cavity
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- G02F1/017—Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells
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Description
Claims (15)
- 電磁放射を誘導および吸収するためのデバイスであって、
前記電磁放射を吸収するための、多層構造を有する1または複数の共振器と、
前記1または複数の共振器に結合され、前記電磁放射を前記1または複数の共振器に誘導する導波路と
を備え、
前記導波路は、前記1または複数の共振器と同一の多層構造を有し、
前記多層構造は、第1のクラッド層、前記第1のクラッド層の上の第2のクラッド層、および前記第1のクラッド層と前記第2のクラッド層との間の量子井戸層を備え、
前記量子井戸層は、前記第1のクラッド層および前記第2のクラッド層とは異なる組成を有する材料から形成され、
前記量子井戸層の厚さおよび組成は、前記1または複数の共振器内で前記電磁放射を吸収するのに適切なバンドギャップを提供しながら、前記導波路内で許容可能なレベルの電磁放射の吸収を可能にするように最適化される、デバイス。 - 基板
をさらに備え、
前記導波路および前記1または複数の共振器は、前記基板上に設けられ、
前記1または複数の共振器の各々は、前記電磁放射の所定波長において共振する、請求項1に記載のデバイス。 - 前記導波路内の前記許容可能なレベルの吸収は、前記量子井戸の前記厚さおよび組成が前記導波路内の吸収を最小限に抑えるように最適化されるような、前記量子井戸層の所定範囲内の厚さおよび組成で得ることができる最小レベルの吸収である、請求項2に記載のデバイス。
- 前記量子井戸の前記厚さおよび前記組成は、前記1または複数の共振器の共振のクオリティQファクタを最大化し、活性層内の歪みを適切な最大値よりも低いままにしながら、所望の量子井戸バンドギャップを提供するように構成される、請求項2または3に記載のデバイス。
- 前記適切な最大値は、1.5%である、請求項4に記載のデバイス。
- 前記量子井戸層は、前記導波路の厚さよりも実質的に小さい厚さを有する、請求項1から5のいずれか一項に記載のデバイス。
- 前記デバイスは、スペクトロメータである、請求項1から6のいずれか一項に記載のデバイス。
- 前記量子井戸層は、所定のエネルギーより小さいか等しいバンドギャップを提供する組成および厚さを有するように構成され、
前記所定のエネルギーは、前記スペクトロメータが検出するように構成されている電磁放射の最大波長λmaxに対応する、請求項7に記載のデバイス。 - 前記1または複数の共振器は、波長間隔Δλに対応する最小の自由スペクトル領域FSR値を有し、
前記量子井戸層は、波長λmax+Δλにおける放射の前記エネルギーに対応する基底状態遷移エネルギーを提供する組成および厚さを有するように構成される、請求項8に記載のデバイス。 - 電磁放射を誘導および吸収するためのデバイスに対して量子井戸層の層厚および組成を最適化する方法であって、
前記デバイスは、
基板と、
前記基板上に位置し、前記電磁放射を吸収する1または複数の共振器と、
前記1または複数の共振器に結合され、前記電磁放射を前記1または複数の共振器に誘導する、前記基板上の導波路と
を備え、
前記1または複数の共振器は、多層構造を有し、
前記導波路は、前記1または複数の共振器と同一の多層構造を有し、
前記多層構造は、第1のクラッド層、前記第1のクラッド層の上の第2のクラッド層、および前記第1のクラッド層と前記第2のクラッド層との間の前記量子井戸層を備え、
前記量子井戸層は、前記第1のクラッド層および前記第2のクラッド層とは異なる組成を有する材料から形成され、
前記方法は、
前記1または複数の共振器内の前記電磁放射を吸収するために前記量子井戸層にとって適切な量子井戸基底状態遷移エネルギーを決定するステップと、
所望の基底状態遷移エネルギーを提供し、前記導波路内で許容可能なレベルの吸収を提供するように構成される前記量子井戸の厚さおよび組成を決定するステップと
を含む、方法。 - 前記デバイスは、
基板
をさらに備え、
前記1または複数の共振器および前記導波路は、前記基板上に設けられており、
前記1または複数の共振器の各々は、放射の所定波長において共振し、
前記厚さおよび前記組成を決定するステップは、
前記1または複数の共振器の共振のクオリティQファクタを最大化し、前記量子井戸層内の歪みを所定の許容限界よりも低いままにしながら、前記所望の基底状態遷移エネルギーを提供するように構成される前記厚さおよび前記組成を決定するステップを含む、請求項10に記載の方法。 - 前記量子井戸の前記厚さおよび前記組成を決定するステップは、
所定範囲の厚さおよび組成から前記量子井戸層の初期厚さおよび組成を選択するステップと、
前記初期厚さおよび組成に基づいて前記1または複数の共振器内の曲げ損失を決定するステップと、
前記曲げ損失に基づいて、前記1または複数の共振器についての前記Qファクタの値を得るステップと、
得られた前記Qファクタの前記値が、前記所定範囲の厚さおよび組成内で利用可能な前記Qファクタの最大値であるか否かを決定するステップと、
選択された前記厚さおよび組成に基づいて、前記量子井戸層内の前記歪みの値を得るステップと、
得られた前記歪みの前記値が前記所定の許容限界を下回るか否かを決定するステップと、
前記Qファクタの前記値が利用可能な最大値であると決定された場合、かつ、得られた前記歪みが前記所定の許容限界を下回る場合には、選択された前記厚さおよび組成を前記量子井戸層の最終的な前記厚さおよび組成として使用するステップと
を含む、請求項11に記載の方法。 - 前記初期厚さおよび組成についての前記Qファクタの前記値が最大値でないと決定された場合、または、得られた前記歪みが前記所定の許容限界を下回らないと決定された場合には、新たな厚さおよび組成を得るために前記初期厚さおよび組成を調整するステップと、
曲げ損失を得る前記ステップ、Qファクタ値を決定する前記ステップ、得られた前記値が最大値であるか否かを決定する前記ステップ、歪み値を得る前記ステップ、得られた前記歪み値が前記新たな厚さおよび組成についての所定の許容限界を下回るか否かを決定する前記ステップを繰り返すステップと
をさらに含む、請求項12に記載の方法。 - 前記初期厚さおよび組成は、前記量子井戸層についてのバンドギャップの目標値に基づいて選択される、請求項13に記載の方法。
- 前記1または複数の共振器は、最小の自由スペクトル領域FSR値を有し、
前記方法は、
前記1または複数の共振器の最小のFSR値よりも小さい波長差分値を得るステップと、
前記波長差分値および前記所定波長の合計に等しい波長における放射の前記エネルギーに対応する値を得ることによって、前記バンドギャップの前記目標値を得るステップと
をさらに含む、請求項14に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11275125.0 | 2011-10-14 | ||
EP11275125.0A EP2581773A1 (en) | 2011-10-14 | 2011-10-14 | Device with Quantum Well Layer |
PCT/EP2012/069934 WO2013053688A1 (en) | 2011-10-14 | 2012-10-09 | Device with quantum well layer |
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JP2015501421A JP2015501421A (ja) | 2015-01-15 |
JP6084622B2 true JP6084622B2 (ja) | 2017-02-22 |
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US (2) | US20150028287A1 (ja) |
EP (2) | EP2581773A1 (ja) |
JP (1) | JP6084622B2 (ja) |
KR (1) | KR102054781B1 (ja) |
CN (1) | CN103998965A (ja) |
AU (1) | AU2012323083B2 (ja) |
CA (1) | CA2856644C (ja) |
MY (1) | MY188215A (ja) |
SG (1) | SG11201401487TA (ja) |
WO (1) | WO2013053688A1 (ja) |
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WO2013065035A1 (en) | 2011-11-03 | 2013-05-10 | Verifood Ltd. | Low-cost spectrometry system for end-user food analysis |
CN105593651B (zh) | 2013-08-02 | 2019-06-07 | 威利食品有限公司 | 光谱测定系统和方法、光谱设备和系统 |
EP3090239A4 (en) | 2014-01-03 | 2018-01-10 | Verifood Ltd. | Spectrometry systems, methods, and applications |
WO2016063284A2 (en) | 2014-10-23 | 2016-04-28 | Verifood, Ltd. | Accessories for handheld spectrometer |
WO2016125164A2 (en) | 2015-02-05 | 2016-08-11 | Verifood, Ltd. | Spectrometry system applications |
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KR20230170814A (ko) * | 2015-02-27 | 2023-12-19 | 예일 유니버시티 | 양자 정보 처리를 위한 발진기 제어 기술 그리고 관련 시스템 및 방법 |
SG11201706838UA (en) | 2015-02-27 | 2017-09-28 | Univ Yale | Techniques for universal quantum control of quantum coherent states and related systems and methods |
KR20180034559A (ko) | 2015-07-24 | 2018-04-04 | 예일 유니버시티 | 양자 정보 처리를 위한 발진기 상태 조작 기술 그리고 관련된 시스템 및 방법 |
EP3488204A4 (en) | 2016-07-20 | 2020-07-22 | Verifood Ltd. | ACCESSORIES FOR HANDLABLE SPECTROMETERS |
US10791933B2 (en) | 2016-07-27 | 2020-10-06 | Verifood, Ltd. | Spectrometry systems, methods, and applications |
WO2018089850A1 (en) | 2016-11-10 | 2018-05-17 | Liang Jiang | Generalized quantum channels |
US11451231B2 (en) | 2018-01-05 | 2022-09-20 | Yale University | Robust quantum logical gates |
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KR102054781B1 (ko) | 2020-01-22 |
AU2012323083B2 (en) | 2015-04-23 |
US10326036B2 (en) | 2019-06-18 |
AU2012323083A1 (en) | 2014-07-03 |
CN103998965A (zh) | 2014-08-20 |
EP2581773A1 (en) | 2013-04-17 |
US20170309763A1 (en) | 2017-10-26 |
CA2856644C (en) | 2019-12-03 |
EP2766757B1 (en) | 2018-08-08 |
JP2015501421A (ja) | 2015-01-15 |
KR20140108218A (ko) | 2014-09-05 |
MY188215A (en) | 2021-11-24 |
EP2766757A1 (en) | 2014-08-20 |
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