JP6274404B2 - 面発光レーザーおよび原子発振器 - Google Patents
面発光レーザーおよび原子発振器 Download PDFInfo
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- JP6274404B2 JP6274404B2 JP2013263463A JP2013263463A JP6274404B2 JP 6274404 B2 JP6274404 B2 JP 6274404B2 JP 2013263463 A JP2013263463 A JP 2013263463A JP 2013263463 A JP2013263463 A JP 2013263463A JP 6274404 B2 JP6274404 B2 JP 6274404B2
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- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
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- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18308—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] having a special structure for lateral current or light confinement
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- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18308—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] having a special structure for lateral current or light confinement
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- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18344—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] characterized by the mesa, e.g. dimensions or shape of the mesa
- H01S5/18347—Mesa comprising active layer
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- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18344—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] characterized by the mesa, e.g. dimensions or shape of the mesa
- H01S5/18352—Mesa with inclined sidewall
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- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18361—Structure of the reflectors, e.g. hybrid mirrors
- H01S5/18369—Structure of the reflectors, e.g. hybrid mirrors based on dielectric materials
- H01S5/18372—Structure of the reflectors, e.g. hybrid mirrors based on dielectric materials by native oxidation
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- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/32—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures
- H01S5/3201—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures incorporating bulkstrain effects, e.g. strain compensation, strain related to polarisation
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Description
基板と、
前記基板上方に設けられた積層体と、
前記積層体の少なくとも一部の上方に設けられた絶縁層と、
少なくとも一部が前記積層体上方に設けられた電極と、
ワイヤーボンディングされるパッドと、
前記電極と前記パッドとを電気的に接続する配線と、
を含み、
前記積層体は、前記基板上方に設けられた第1ミラー層と、前記第1ミラー層上方に設けられた活性層と、前記活性層上方に設けられた第2ミラー層と、を含み、
平面視において、前記積層体は、第1歪付与部と、第2歪付与部と、前記第1歪付与部と前記第2歪付与部との間に設けられ、前記活性層で発生した光を共振させる共振部と、を有し、
平面視において、前記絶縁層は、前記第1歪付与部の少なくとも一部を覆うように設けられ、
平面視において、前記電極は、前記共振部の少なくとも一部について、幅方向の全体を覆うように設けられ、
平面視において、前記配線は、前記第1歪付与部の少なくとも一部を覆うように設けられ、
平面視において、前記配線の幅は、前記第1歪付与部の幅よりも広く、前記電極の幅よりも狭い。
平面視において、前記第1歪付与部は、前記電極および前記配線の少なくとも一方で覆われている。
前記第1歪付与部は、第1幅を有し、
前記第2歪付与部は、第2幅を有し、
前記共振部は、前記第1幅および前記第2幅の少なくとも一方よりも広い第3幅を有する。
本発明に係る面発光レーザーを含む。
まず、本実施形態に係る面発光レーザーについて、図面を参照しながら説明する。図1は、本実施形態に係る面発光レーザー100を模式的に示す平面図である。図2は、本実施形態に係る面発光レーザー100を模式的に示す図1のII−II線断面図である。図3は、本実施形態に係る面発光レーザー100を模式的に示す平面図である。図4は、本実施形態に係る面発光レーザー100を模式的に示す図3のIV−IV線断面図である。
In0.06Ga0.94As層とi型のAl0.3Ga0.7As層とから構成される量子井戸構造を3層重ねた多重量子井戸(MQW)構造を有している。
における樹脂層70の長さよりも大きい。すなわち、樹脂層70の長手方向は、Y軸方向である。樹脂層70の長手方向と積層体2の長手方向とは、一致している。
発光レーザー100では、レーザー光の偏光方向の安定化を図ることができる。
次に、本実施形態に係る面発光レーザーの製造方法について、図面を参照しながら説明する。図9〜図12は、本実施形態に係る面発光レーザー100の製造工程を模式的に示す断面図であって、図2に対応している。
収縮し、第2領域62の上面63は、基板10側に傾斜する(図4参照)。第1歪付与部2aおよび第2歪付与部2bは、第1領域60および第2領域62の収縮に起因する歪みを(応力を)活性層30に付与することができる。
次に、本実施形態に係る原子発振器について、図面を参照しながら説明する。図13は、本実施形態に係る原子発振器1000を示す機能ブロック図である。
ギー差に相当する周波数が9.19263・・・GHzなので、周波数差が9.19263・・・GHzの2つの光波が照射されるとEIT現象を起こす。
Claims (4)
- 基板と、
前記基板上方に設けられた積層体と、
前記積層体の少なくとも一部の上方に設けられた絶縁層と、
少なくとも一部が前記積層体上方に設けられた電極と、
ワイヤーボンディングされるパッドと、
前記絶縁層の上方に設けられ、前記電極と前記パッドとを電気的に接続する配線と、
を含み、
前記積層体は、前記基板上方に設けられた第1ミラー層と、前記第1ミラー層上方に設けられた活性層と、前記活性層上方に設けられた第2ミラー層と、を含み、
平面視において、前記積層体は、第1歪付与部と、第2歪付与部と、前記第1歪付与部と前記第2歪付与部との間に設けられ、前記活性層で発生した光を共振させる共振部と、を有し、
平面視において、前記絶縁層は、前記第1歪付与部の少なくとも一部を覆うように設けられ、
平面視において、前記電極は、前記共振部の少なくとも一部を覆うように設けられ、
平面視において、前記配線は、前記第1歪付与部の少なくとも一部について、幅方向の全体を覆うように設けられ、
平面視において、前記配線の幅は、前記第1歪付与部の幅よりも広く、前記電極の幅よりも狭く、
前記絶縁層の上面は、
第1部分と、
前記第1部分よりも曲率が大きく、平面視において前記第1歪付与部の側面と重なる第2部分と、
を有し、
前記配線は、前記第2部分を覆い、
前記配線の幅方向の端部は、前記第1部分に設けられている、面発光レーザー。 - 請求項1において、
平面視において、前記第1歪付与部は、前記電極および前記配線の少なくとも一方で覆われていることを特徴とする、面発光レーザー。 - 請求項1または2において、
前記第1歪付与部は、第1幅を有し、
前記第2歪付与部は、第2幅を有し、
前記共振部は、前記第1幅および前記第2幅の少なくとも一方よりも広い第3幅を有することを特徴とする、面発光レーザー。 - 請求項1ないし3のいずれか1項に記載の面発光レーザーを含む、原子発振器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2013263463A JP6274404B2 (ja) | 2013-12-20 | 2013-12-20 | 面発光レーザーおよび原子発振器 |
CN201410756929.7A CN104734007A (zh) | 2013-12-20 | 2014-12-10 | 面发光激光器以及原子振荡器 |
US14/574,813 US9634467B2 (en) | 2013-12-20 | 2014-12-18 | Vertical cavity surface emitting laser and atomic oscillator |
EP14198853.5A EP2887468A3 (en) | 2013-12-20 | 2014-12-18 | Vertical cavity surface emitting laser and atomic oscillator |
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JP2013263463A JP6274404B2 (ja) | 2013-12-20 | 2013-12-20 | 面発光レーザーおよび原子発振器 |
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JP2015119142A JP2015119142A (ja) | 2015-06-25 |
JP6274404B2 true JP6274404B2 (ja) | 2018-02-07 |
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US (1) | US9634467B2 (ja) |
EP (1) | EP2887468A3 (ja) |
JP (1) | JP6274404B2 (ja) |
CN (1) | CN104734007A (ja) |
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JP6299955B2 (ja) * | 2013-12-20 | 2018-03-28 | セイコーエプソン株式会社 | 面発光レーザーおよび原子発振器 |
JP6786961B2 (ja) | 2016-08-29 | 2020-11-18 | セイコーエプソン株式会社 | 面発光レーザーおよび原子発振器 |
EP3419123A1 (en) * | 2017-06-22 | 2018-12-26 | Koninklijke Philips N.V. | Vertical cavity surface emitting laser (vcsel) with improved gain-switching behavior |
CN112612198B (zh) * | 2020-12-22 | 2022-04-01 | 中国计量科学研究院 | 用于冷原子喷泉钟的温度免疫微波谐振器 |
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JP3482824B2 (ja) * | 1997-07-29 | 2004-01-06 | セイコーエプソン株式会社 | 面発光型半導体レーザおよび面発光型半導体レーザアレイ |
JP3791584B2 (ja) * | 1999-12-28 | 2006-06-28 | セイコーエプソン株式会社 | 面発光型半導体レーザおよび面発光型半導体レーザアレイ |
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