CN105324890B - 径向偏振薄片激光器 - Google Patents
径向偏振薄片激光器 Download PDFInfo
- Publication number
- CN105324890B CN105324890B CN201380077672.6A CN201380077672A CN105324890B CN 105324890 B CN105324890 B CN 105324890B CN 201380077672 A CN201380077672 A CN 201380077672A CN 105324890 B CN105324890 B CN 105324890B
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- China
- Prior art keywords
- laser
- brewster
- radial polarisation
- gain medium
- twin shaft
- Prior art date
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- 238000005086 pumping Methods 0.000 claims abstract description 53
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 239000013078 crystal Substances 0.000 claims description 27
- 239000010408 film Substances 0.000 claims description 18
- 239000002826 coolant Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 238000009738 saturating Methods 0.000 claims description 5
- 238000002834 transmittance Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 claims description 2
- 239000012788 optical film Substances 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 229910019655 synthetic inorganic crystalline material Inorganic materials 0.000 description 52
- 230000010287 polarization Effects 0.000 description 18
- 230000000694 effects Effects 0.000 description 15
- 238000010521 absorption reaction Methods 0.000 description 12
- 238000002310 reflectometry Methods 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 206010003084 Areflexia Diseases 0.000 description 2
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- 239000002245 particle Substances 0.000 description 2
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
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- 238000005520 cutting process Methods 0.000 description 1
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- 230000005284 excitation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
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- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- 239000013307 optical fiber Substances 0.000 description 1
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- 230000010355 oscillation Effects 0.000 description 1
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- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- H01S3/0602—Crystal lasers or glass lasers
- H01S3/0604—Crystal lasers or glass lasers in the form of a plate or disc
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/001—Axicons, waxicons, reflaxicons
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3066—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state involving the reflection of light at a particular angle of incidence, e.g. Brewster's angle
-
- 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
- H01S3/02—Constructional details
- H01S3/025—Constructional details of solid state lasers, e.g. housings or mountings
-
- 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
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0405—Conductive cooling, e.g. by heat sinks or thermo-electric elements
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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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/042—Arrangements for thermal management for solid state 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
- 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
- H01S3/0804—Transverse or lateral modes
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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
- 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
- H01S3/08054—Passive cavity elements acting on the polarization, e.g. a polarizer for branching or walk-off compensation
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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
- 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
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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
- 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
- H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
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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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
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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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
- H01S3/09415—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode the pumping beam being parallel to the lasing mode of the pumped medium, e.g. end-pumping
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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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1611—Solid materials characterised by an active (lasing) ion rare earth neodymium
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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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1618—Solid materials characterised by an active (lasing) ion rare earth ytterbium
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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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/163—Solid materials characterised by a crystal matrix
- H01S3/164—Solid materials characterised by a crystal matrix garnet
- H01S3/1643—YAG
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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
- H01S2301/00—Functional characteristics
- H01S2301/20—Lasers with a special output beam profile or cross-section, e.g. non-Gaussian
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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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0407—Liquid cooling, e.g. by water
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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
- 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
- H01S3/10061—Polarization control
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Lasers (AREA)
Abstract
Description
Claims (15)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2013/087687 WO2015074246A1 (zh) | 2013-11-22 | 2013-11-22 | 径向偏振薄片激光器 |
Publications (3)
Publication Number | Publication Date |
---|---|
CN105324890A CN105324890A (zh) | 2016-02-10 |
CN105324890A8 CN105324890A8 (zh) | 2017-01-11 |
CN105324890B true CN105324890B (zh) | 2018-02-27 |
Family
ID=53178820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201380077672.6A Active CN105324890B (zh) | 2013-11-22 | 2013-11-22 | 径向偏振薄片激光器 |
Country Status (3)
Country | Link |
---|---|
US (1) | US9640935B2 (zh) |
CN (1) | CN105324890B (zh) |
WO (1) | WO2015074246A1 (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109494551B (zh) * | 2017-09-13 | 2024-03-01 | 中国科学院大连化学物理研究所 | 一种碟片激光器 |
CN111211466B (zh) * | 2018-11-21 | 2022-06-21 | 中国科学院理化技术研究所 | 透明导光与低应力封装的固体激光模块装置及其焊接方法 |
CN110921613B (zh) * | 2019-11-21 | 2023-06-27 | 武汉大学 | 电磁场控制等离子体的激光掩膜刻蚀方法以及*** |
CN112467508B (zh) * | 2021-01-28 | 2021-06-08 | 四川光天下激光科技有限公司 | 一种窄脉宽激光器 |
CN114284849B (zh) * | 2021-12-30 | 2024-01-09 | 云南大学 | 基于变焦空心光泵浦可调涡旋位相正交圆筒柱矢量激光器 |
CN114498252B (zh) * | 2021-12-30 | 2023-10-24 | 云南大学 | 一种三重自由度本征模式的空心激光器 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4755027A (en) * | 1985-07-02 | 1988-07-05 | Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V. | Method and device for polarizing light radiation |
US5357130A (en) * | 1992-07-24 | 1994-10-18 | Hughes Aircraft Company | Low-noise cryogenic MOSFET |
US5359622A (en) * | 1993-03-30 | 1994-10-25 | Trw Inc. | Radial polarization laser resonator |
CN1290415A (zh) * | 1998-11-10 | 2001-04-04 | 东京电子株式会社 | 光反应装置 |
CN101552425A (zh) * | 2009-05-13 | 2009-10-07 | 中国科学院上海光学精密机械研究所 | 输出径向偏振光束的激光器 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1599097A (en) * | 1977-02-08 | 1981-09-30 | Marie G R P | Generators of electromagnetic light or infrared waves having plasma confining modes |
US5375130A (en) * | 1993-05-13 | 1994-12-20 | Trw Inc. | Azimuthal and radial polarization free-electron laser system |
US6373868B1 (en) * | 1993-05-28 | 2002-04-16 | Tong Zhang | Single-mode operation and frequency conversions for diode-pumped solid-state lasers |
US6115400A (en) | 1997-08-20 | 2000-09-05 | Brown; David C. | Total internal reflection thermally compensated rod laser |
DE19835107A1 (de) | 1998-08-04 | 2000-02-17 | Univ Stuttgart Strahlwerkzeuge | Laserverstärkersystem |
AU5146699A (en) | 1999-08-02 | 2001-02-19 | Junheng Wang | A laser with the resonance cavity including a circular cone prism being top in shape |
US7535633B2 (en) | 2005-01-10 | 2009-05-19 | Kresimir Franjic | Laser amplifiers with high gain and small thermal aberrations |
EP1744187A1 (en) | 2005-07-15 | 2007-01-17 | Vrije Universiteit Brussel | Folded radial brewster polariser |
US7627017B2 (en) | 2006-08-25 | 2009-12-01 | Stc. Unm | Laser amplifier and method of making the same |
JP2010134328A (ja) | 2008-12-08 | 2010-06-17 | Disco Abrasive Syst Ltd | 偏光素子およびレーザーユニット |
US8908737B2 (en) | 2011-04-04 | 2014-12-09 | Coherent, Inc. | Transition-metal-doped thin-disk laser |
-
2013
- 2013-11-22 WO PCT/CN2013/087687 patent/WO2015074246A1/zh active Application Filing
- 2013-11-22 US US15/034,127 patent/US9640935B2/en active Active
- 2013-11-22 CN CN201380077672.6A patent/CN105324890B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4755027A (en) * | 1985-07-02 | 1988-07-05 | Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V. | Method and device for polarizing light radiation |
US5357130A (en) * | 1992-07-24 | 1994-10-18 | Hughes Aircraft Company | Low-noise cryogenic MOSFET |
US5359622A (en) * | 1993-03-30 | 1994-10-25 | Trw Inc. | Radial polarization laser resonator |
CN1290415A (zh) * | 1998-11-10 | 2001-04-04 | 东京电子株式会社 | 光反应装置 |
CN101552425A (zh) * | 2009-05-13 | 2009-10-07 | 中国科学院上海光学精密机械研究所 | 输出径向偏振光束的激光器 |
Non-Patent Citations (2)
Title |
---|
"Generation of radially polarized mode in Yb fiber laser by using a dual conical prism";Jian-lang Li 等;《OPTICS LETTERS》;20061015;第31卷(第20期);2969页及附图1-2 * |
"基于内腔布儒斯特双轴锥棱镜的掺镱光纤激光器的径向偏振模振荡";种兰祥 等;《光子学报》;20080331;第37卷(第3期);430-431页及附图1 * |
Also Published As
Publication number | Publication date |
---|---|
CN105324890A8 (zh) | 2017-01-11 |
CN105324890A (zh) | 2016-02-10 |
WO2015074246A1 (zh) | 2015-05-28 |
US9640935B2 (en) | 2017-05-02 |
US20160276795A1 (en) | 2016-09-22 |
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