JP4894398B2 - 半導体レーザ装置 - Google Patents
半導体レーザ装置 Download PDFInfo
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- JP4894398B2 JP4894398B2 JP2006209746A JP2006209746A JP4894398B2 JP 4894398 B2 JP4894398 B2 JP 4894398B2 JP 2006209746 A JP2006209746 A JP 2006209746A JP 2006209746 A JP2006209746 A JP 2006209746A JP 4894398 B2 JP4894398 B2 JP 4894398B2
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- 239000004065 semiconductor Substances 0.000 title description 64
- 238000005253 cladding Methods 0.000 claims description 59
- 239000012535 impurity Substances 0.000 claims description 3
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 claims description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 17
- 239000000203 mixture Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000004088 simulation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910002704 AlGaN Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- -1 nitride compound Chemical class 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/2004—Confining in the direction perpendicular to the layer structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/2036—Broad area lasers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/2054—Methods of obtaining the confinement
- H01S5/2059—Methods of obtaining the confinement by means of particular conductivity zones, e.g. obtained by particle bombardment or diffusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- 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
- H01S5/3211—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures characterised by special cladding layers, e.g. details on band-discontinuities
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/34—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers
- H01S5/343—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/34313—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser with a well layer having only As as V-compound, e.g. AlGaAs, InGaAs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/34—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers
- H01S5/343—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/34346—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser characterised by the materials of the barrier layers
- H01S5/34373—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser characterised by the materials of the barrier layers based on InGa(Al)AsP
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- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Crystallography & Structural Chemistry (AREA)
- Geometry (AREA)
- Semiconductor Lasers (AREA)
Description
本実施の形態に係る半導体レーザについて説明する。上記半導体レーザ装置の断面斜視図を図1に示す。この半導体レーザは、n型GaAs基板2を用いて形成されている。n型GaAs基板2の上に、n型(Al0.3Ga0.7)0.5In0.5Pからなる第1クラッド層3、In0.33Ga0.67As0.40P0.60からなる第1ガイド層4(層厚600nm)、GaAs0.88P0.12からなる第1エンハンス層5(層厚10nm)、In0.07Ga0.93Asからなる活性層6(層厚12nm)、GaAs0.88P0.12からなる第2エンハンス層7(層厚10nm)、In0.33Ga0.67As0.40P0.60からなる第2ガイド層8(層厚600nm)、p型(Al0.3Ga0.7)0.5In0.5Pからなる第2クラッド層9が積層されている。第2クラッド層9の上面の両側には、プロトン注入領域12が設けられている。第2クラッド層9およびプロトン注入領域12の上には、p型GaAsからなるコンタクト層10、p電極11が積層されている。また、GaAs基板2の裏面には、n電極1が設けられている。
のxとyは、y=(1.0+x)/2.08の関係を有する。上記Asの組成比(In1-yGayAsxP1-xのXの値、但しy=(1.0+X)/2.08)が0.2、0.3、0.4、0.5の場合の動作電圧をそれぞれV0.2、V0.3、V0.4、V0.5として示す。また、これらのリファレンスとして、上記ガイド層としてIn0.49Ga0.51Pを用いた場合の動作電圧をV0として示す。
本実施の形態に係る半導体レーザ装置について説明する。ここでは、実施の形態1と異なる点を中心に説明する。本実施の形態の半導体レーザは、図1で示した構造において、第1クラッド層3としてn型のIn0.49Ga0.51Pを用い、第2クラッド層9としてp型のIn0.49Ga0.51Pを用いるようにしたものである。また、第1ガイド層4および第2ガイド層8として、In0.23Ga0.77As0.60P0.40を用いるようにしたものである。その他の構成については、実施の形態1と同様である。
本実施の形態に係る半導体レーザ装置について説明する。ここでは、実施の形態1と異なる点を中心に説明する。本実施の形態の半導体レーザは、図1で示した構造において、第1ガイド層4および第2ガイド層8として、Al0.15Ga0.85Asを用いるようにしたものである。その他の構成については、実施の形態1と同様である。
本実施の形態に係る半導体レーザ装置について説明する。ここでは、実施の形態1と異なる点を中心に説明する。上記半導体レーザ装置の断面斜視図を図7に示す。第1ガイド層4の上に活性層6が設けられ、その上に第2ガイド層8が設けられた構造となっている。すなわち、本実施の形態では、図1に示した第1エンハンス層5、第2エンハンス層7が設けられていない構造となっている。また、第1ガイド層4、第2ガイド層8の材料として、In0.47Ga0.53As0.10P0.90を用いるようにしたものである。また、活性層6として、GaAs0.88P0.12を用いるようにしたものである。活性層6として上記材料を用いることにより、発振波長が808nm近傍となる半導体レーザを実現することができる。その他の構成については、実施の形態1と同様である。
Claims (1)
- バンドギャップエネルギーがEg(C1)である第1導電型の第1クラッド層と、
前記第1クラッド層の上に設けられ、バンドギャップエネルギーがEg(G1)である第1ガイド層と、
前記第1ガイド層の上に設けられ、バンドギャップエネルギーがEg(A)であり、レーザ光を発生させる活性層と、
前記活性層の上に設けられ、バンドギャップエネルギーがEg(G2)である第2ガイド層と、
前記第2ガイド層の上に設けられ、バンドギャップエネルギーがEg(C2)である第2導電型の第2クラッド層とを備え、
前記第1クラッド層と前記第2クラッド層は、AlGaInP又はInGaPで形成され、
前記第1ガイド層と前記第2ガイド層は、InGaAsPで形成され、不純物がドーピングされておらず、
前記活性層は、InGaAsで形成され、
前記第1ガイド層および前記第2ガイド層の少なくとも一方は100nm以上の厚さを有し、Eg(G1)とEg(A)との差、およびEg(G2)とEg(A)との差のうち大きい方が、Eg(C1)とEg(A)との差、およびEg(C2)とEg(A)との差のうち小さい方の0.66倍以下であることを特徴とする半導体レーザ装置。
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JP2006209746A JP4894398B2 (ja) | 2006-01-24 | 2006-08-01 | 半導体レーザ装置 |
US11/550,841 US7289546B1 (en) | 2006-01-24 | 2006-10-19 | Semiconductor laser having an improved stacked structure |
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JP2006209746A JP4894398B2 (ja) | 2006-01-24 | 2006-08-01 | 半導体レーザ装置 |
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JP2007227870A JP2007227870A (ja) | 2007-09-06 |
JP4894398B2 true JP4894398B2 (ja) | 2012-03-14 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP5002391B2 (ja) * | 2007-09-26 | 2012-08-15 | 三菱電機株式会社 | 半導体レーザ装置 |
JP2010153564A (ja) * | 2008-12-25 | 2010-07-08 | Mitsubishi Electric Corp | 半導体レーザ素子及びその製造方法 |
JP2011014694A (ja) * | 2009-07-01 | 2011-01-20 | Mitsubishi Electric Corp | 半導体レーザ装置 |
JP5636773B2 (ja) * | 2010-07-06 | 2014-12-10 | ソニー株式会社 | 半導体レーザ |
JP2012156559A (ja) * | 2012-05-21 | 2012-08-16 | Mitsubishi Electric Corp | 半導体レーザ装置 |
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JP2000332362A (ja) * | 1999-05-24 | 2000-11-30 | Sony Corp | 半導体装置および半導体発光素子 |
JP2001148541A (ja) * | 1999-11-19 | 2001-05-29 | Fuji Photo Film Co Ltd | 半導体発光装置およびその半導体発光装置を励起光源に用いた固体レーザ装置 |
JP2004063537A (ja) | 2002-07-25 | 2004-02-26 | Sony Corp | 半導体発光素子およびその製造方法ならびに半導体装置およびその製造方法 |
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US20070171948A1 (en) | 2007-07-26 |
US7289546B1 (en) | 2007-10-30 |
JP2007227870A (ja) | 2007-09-06 |
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