JP2020177985A - 外部共振器型半導体レーザ - Google Patents
外部共振器型半導体レーザ Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 99
- 230000001681 protective effect Effects 0.000 claims abstract description 59
- 239000000463 material Substances 0.000 claims abstract description 19
- 229910002601 GaN Inorganic materials 0.000 claims abstract description 16
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims description 28
- 150000004767 nitrides Chemical group 0.000 claims description 6
- 230000004075 alteration Effects 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 abstract 3
- 239000000428 dust Substances 0.000 description 15
- 239000000758 substrate Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 241000282326 Felis catus Species 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 229910052594 sapphire Inorganic materials 0.000 description 4
- 239000010980 sapphire Substances 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000012576 optical tweezer Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000000960 laser cooling Methods 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
- G02B5/285—Interference filters comprising deposited thin solid films
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/0619—Coatings, e.g. AR, HR, passivation layer
- H01S3/0621—Coatings on the end-faces, e.g. input/output surfaces of the laser light
- H01S3/0623—Antireflective [AR]
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08059—Constructional details of the reflector, e.g. shape
-
- 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
- H01S5/02—Structural details or components not essential to laser action
- H01S5/028—Coatings ; Treatment of the laser facets, e.g. etching, passivation layers or reflecting layers
-
- 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
- H01S5/10—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
- H01S5/14—External cavity lasers
- H01S5/141—External cavity lasers using a wavelength selective device, e.g. a grating or etalon
-
- 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
- H01S5/323—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/32308—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength less than 900 nm
- H01S5/32341—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength less than 900 nm blue laser based on GaN or GaP
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08018—Mode suppression
- H01S3/08022—Longitudinal modes
- H01S3/08027—Longitudinal modes by a filter, e.g. a Fabry-Perot filter is used for wavelength setting
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
-
- 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
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/02208—Mountings; Housings characterised by the shape of the housings
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Semiconductor Lasers (AREA)
Abstract
Description
[実施形態1]
(半導体レーザ素子4)
(第一レンズ1)
(波長選択素子5)
(第二レンズ2)
(出力ミラー10)
(多層膜11)
(保護部材20)
(第三レンズ3)
[実施形態2]
[実施形態3]
1…第一レンズ
2…第二レンズ
3…第三レンズ
4…半導体レーザ素子
5…波長選択素子
6…ピエゾ素子
10、10’…出力ミラー
11、11’…多層膜
20、20B、20C、20’…保護部材
700…従来の干渉フィルタを用いたECLD
701…第一レンズ
702…第二レンズ
703…第三レンズ
704…半導体レーザ素子
705…波長選択素子
710…出力ミラー
TS…透過面
RS…反射面
P1…保護部材の表面側領域
P2…保護部材の反射面領域
TA…透過面におけるビームスポット領域
RA…反射面におけるビームスポット領域
SA…保護部材表面におけるビームスポット領域
Claims (12)
- 窒化ガリウム系の材料を含む半導体レーザ素子と、
前記半導体レーザ素子の出射光の光路上に配置される第一レンズと、
前記第一レンズを透過した光の光路上に配置され、特定の波長の光を選択するための波長選択素子と、
前記波長選択素子を通過した光の光路上に配置され、光を出力ミラー上で結像する第二レンズと、
前記第二レンズを透過して集光された光の光路上に配置される前記出力ミラーと、
を備え、
前記出力ミラーは少なくとも一面に透光性の保護部材が接合され、
前記第二レンズを透過して、前記出力ミラーに入射される光を、前記出力ミラーの面上で結像させつつ、前記面を前記保護部材で保護してなる外部共振器型半導体レーザ。 - 請求項1に記載の外部共振器型半導体レーザであって、
前記保護部材は、前記出力ミラーと直接接合により接合されてなる外部共振器型半導体レーザ。 - 請求項1又は2に記載の外部共振器型半導体レーザであって、
前記第二レンズは、保護部材入射時の屈折による球面収差を緩和する非球面レンズである外部共振器型半導体レーザ。 - 請求項1〜3のいずれか一項に記載の外部共振器型半導体レーザであって、
前記出力ミラーは、前記保護部材と結合する面に、多層膜をコーティングしてなる外部共振器型半導体レーザ。 - 請求項1〜4のいずれか一項に記載の外部共振器型半導体レーザであって、
前記保護部材の反射率を、当該保護部材を構成する材質の屈折率から定まる反射率よりも低くしてなる外部共振器型半導体レーザ。 - 請求項1〜5のいずれか一項に記載の外部共振器型半導体レーザであって、
前記保護部材の厚さが、0.3mm〜3.5mmである外部共振器型半導体レーザ。 - 窒化ガリウム系の材料を含む半導体レーザ素子と、
前記半導体レーザ素子の出射光の光路上に配置される第一レンズと、
前記第一レンズを透過された光の光路上に配置され、特定の波長の光を選択するための波長選択素子と、
前記波長選択素子を通過した光の光路上に配置され、光を出力ミラー上で結像する第二レンズと、
前記第二レンズを透過して集光された光の光路上に配置される前記出力ミラーと、
を備え、
少なくとも出力ミラーを含む一部、あるいは、全体が無塵封止されている、
外部共振器型半導体レーザ。 - 請求項1〜7のいずれか一項に記載の外部共振器型半導体レーザであって、さらに、
前記共振器内に配置されるアクチュエータを備える外部共振器型半導体レーザ。 - 請求項1〜8のいずれか一項に記載の外部共振器型半導体レーザであって、
前記半導体レーザが、その発光ピーク波長を360nm〜520nmとしてなる外部共振器型半導体レーザ。 - 請求項1〜9のいずれか一項に記載の外部共振器型半導体レーザであって、
前記波長選択素子が、干渉フィルタである外部共振器型半導体レーザ。 - 請求項1〜10のいずれか一項に記載の外部共振器型半導体レーザであって、
前記半導体レーザ素子が、InXAlYGa1-X-YN(0≦X、0≦Y、X+Y<1)で表される窒化物半導体である外部共振器型半導体レーザ。 - 請求項11に記載の外部共振器型半導体レーザであって、
前記半導体レーザ素子が、端面をARコートされている外部共振器型半導体レーザ。
Priority Applications (2)
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JP2019077969A JP7364850B2 (ja) | 2019-04-16 | 2019-04-16 | 外部共振器型半導体レーザ |
US16/849,307 US11456574B2 (en) | 2019-04-16 | 2020-04-15 | External-cavity semiconductor laser |
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JP2019077969A JP7364850B2 (ja) | 2019-04-16 | 2019-04-16 | 外部共振器型半導体レーザ |
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JP2020177985A true JP2020177985A (ja) | 2020-10-29 |
JP7364850B2 JP7364850B2 (ja) | 2023-10-19 |
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Families Citing this family (1)
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EP4402761A1 (en) * | 2021-12-21 | 2024-07-24 | Bosch Car Multimedia Portugal, S.A. | Narrow linewidth and frequency tunable cat-eye external cavity diode lasers |
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US20200335941A1 (en) | 2020-10-22 |
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