JP6562464B2 - 受動qスイッチレーザ装置 - Google Patents
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- JP6562464B2 JP6562464B2 JP2016002667A JP2016002667A JP6562464B2 JP 6562464 B2 JP6562464 B2 JP 6562464B2 JP 2016002667 A JP2016002667 A JP 2016002667A JP 2016002667 A JP2016002667 A JP 2016002667A JP 6562464 B2 JP6562464 B2 JP 6562464B2
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- H—ELECTRICITY
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- 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
- H01S3/094076—Pulsed or modulated pumping
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- 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
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1106—Mode locking
- H01S3/1112—Passive mode locking
- H01S3/1115—Passive mode locking using intracavity saturable absorbers
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- 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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- 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
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1123—Q-switching
- H01S3/113—Q-switching using intracavity saturable absorbers
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- H—ELECTRICITY
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- 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
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- 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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- 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
- H01S3/094049—Guiding of the pump light
- H01S3/094053—Fibre coupled pump, e.g. delivering pump light using a fibre or a fibre bundle
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- H—ELECTRICITY
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- 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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- 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
- H01S3/10053—Phase control
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- 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
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Lasers (AREA)
Description
本発明の実施形態に係る受動Qスイッチレーザ装置1は図1に示すように、共振器11を形成するエンドミラー要素11a及び出力ミラー要素11bと、共振器11内部に配置されたレーザ利得媒質12と、共振器11内部に配置された可飽和吸収体13と、レーザ利得媒質12を励起する励起光源14と、励起光源14からの励起光のパワー密度を、レーザ利得媒質12の励起を開始してから発振に至るまでの遅延時間、すなわち発振開始時間tsがレーザ利得媒質12のレーザ上準位寿命に等しくなるパワー密度以上にするパワー密度制御装置15と、を備えている。
実施形態に係る受動Qスイッチレーザ装置1の動作説明によって、励起光源からの励起光のパワー密度を、レーザ利得媒質の励起を開始してからQスイッチ発振に至るまでの遅延時間がレーザ利得媒質のレーザ上準位寿命に等しくなるパワー密度以上にすると、励起効率が高く且つQスイッチ発振に至る遅延時間のジッターが小さくなるメカニズムが示された。したがって、検証実験は必要でないが、敢えて行ったものである。
11・・・・・・共振器
11a・・・・エンドミラー要素
11b・・・・出力ミラー要素
12・・・・・・レーザ利得媒質
13・・・・・・可飽和吸収体
14・・・・・・励起光源
15・・・・・・パワー密度制御装置
15b・・・・駆動電源
16・・・・・・光学系
Claims (1)
- 共振器を形成するエンドミラー要素と出力ミラー要素と、
前記共振器内部に配置されたレーザ利得媒質と、
前記共振器内部に配置された可飽和吸収体と、
前記レーザ利得媒質を励起する励起光源と、
前記励起光源からの励起光のパワー密度Dを制御する駆動電源と光学系により構成されるパワー密度制御装置と、を有し、
前記レーザ利得媒質の励起時間幅を前記レーザ利得媒質のレーザ上準位寿命τに等しくしたときに出力が得られるのに必要な励起密度をDτとしたとき、
前記パワー密度制御装置は、前記パワー密度Dが次式
D/Dτ≧1.36
を満たすように制御することを特徴とする受動Qスイッチレーザ装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2016002667A JP6562464B2 (ja) | 2016-01-08 | 2016-01-08 | 受動qスイッチレーザ装置 |
US15/401,251 US9887511B2 (en) | 2016-01-08 | 2017-01-09 | Passive Q-switch laser device |
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JP2016002667A JP6562464B2 (ja) | 2016-01-08 | 2016-01-08 | 受動qスイッチレーザ装置 |
Publications (3)
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JP2017123429A JP2017123429A (ja) | 2017-07-13 |
JP2017123429A5 JP2017123429A5 (ja) | 2018-06-28 |
JP6562464B2 true JP6562464B2 (ja) | 2019-08-21 |
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JP (1) | JP6562464B2 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN118099918A (zh) * | 2017-09-05 | 2024-05-28 | 国立研究开发法人量子科学技术研究开发机构 | 光源以及测量装置 |
CN110149576B (zh) * | 2018-02-13 | 2021-07-06 | 易音特电子株式会社 | 可穿戴声换能器 |
JP7500069B2 (ja) | 2018-09-14 | 2024-06-17 | 大学共同利用機関法人自然科学研究機構 | 光発振器 |
KR102221082B1 (ko) * | 2020-02-13 | 2021-02-26 | (주)엘트라글로벌 | 다중 큐 스위칭을 이용한 다중 레이저 펄스 발진 방법 및 다중 레이저 펄스 발진 장치 |
US12009628B2 (en) * | 2020-12-24 | 2024-06-11 | Viettel Group | Structure and configuration of the passively Q-switched diode end-pumped solid-state laser |
Family Cites Families (8)
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US5339323A (en) * | 1993-04-30 | 1994-08-16 | Lumonics Corporation | Laser system for controlling emitted pulse energy |
JP3700516B2 (ja) * | 2000-02-09 | 2005-09-28 | 三菱電機株式会社 | 波長変換レーザ装置およびレーザ加工装置 |
JP2003086873A (ja) * | 2001-09-10 | 2003-03-20 | Hamamatsu Photonics Kk | 受動qスイッチレーザ |
JP2003158325A (ja) * | 2001-09-10 | 2003-05-30 | Hamamatsu Photonics Kk | 受動qスイッチレーザ |
JP2003198019A (ja) * | 2001-12-25 | 2003-07-11 | Hamamatsu Photonics Kk | レーザ光源 |
JP2007235063A (ja) * | 2006-03-03 | 2007-09-13 | Tokyo Institute Of Technology | Qスイッチレーザおよびqスイッチ発振方法 |
JP6257190B2 (ja) * | 2013-07-09 | 2018-01-10 | キヤノン株式会社 | 被検体情報取得装置およびレーザー装置 |
JP6318562B2 (ja) * | 2013-11-12 | 2018-05-09 | 株式会社島津製作所 | パルスレーザ装置 |
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JP2017123429A (ja) | 2017-07-13 |
US9887511B2 (en) | 2018-02-06 |
US20170201061A1 (en) | 2017-07-13 |
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