JP2005521317A - 受動q−スイッチレーザの位相同期ループ制御 - Google Patents
受動q−スイッチレーザの位相同期ループ制御 Download PDFInfo
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- JP2005521317A JP2005521317A JP2003579325A JP2003579325A JP2005521317A JP 2005521317 A JP2005521317 A JP 2005521317A JP 2003579325 A JP2003579325 A JP 2003579325A JP 2003579325 A JP2003579325 A JP 2003579325A JP 2005521317 A JP2005521317 A JP 2005521317A
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- 238000000034 method Methods 0.000 claims abstract description 13
- 238000005086 pumping Methods 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000684 flow cytometry Methods 0.000 description 1
- 238000000799 fluorescence microscopy Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000009966 trimming Methods 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
- 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
-
- 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
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/1304—Stabilisation of laser output parameters, e.g. frequency or amplitude by using an active reference, e.g. second laser, klystron or other standard frequency source
-
- 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
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/131—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1312—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
-
- 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
-
- 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
- H01S3/102—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
-
- 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
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/1305—Feedback control systems
-
- 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
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/1307—Stabilisation of the phase
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
- Semiconductor Lasers (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
Description
るものである。
下記の詳細説明では、多くの具体例を用いて説明しているが、下記の詳細説明に対する多くの変更や修正は本発明の範囲内にある。その結果、以下に説明した本発明の典型的な実施例は、本請求項の発明を限定するものではなく、いかなる一般性も失わない。本発明において、受動Q−スイッチレーザ(PQSL)は電圧制御発振器(VCO)と等価であるということがわかる。電圧制御発振器は位相同期を発生させるために利用できる。従って、レーザが発生したパルスの周波数と位相を基準信号発振器に同期することが可能である。PQSLのパルス周波数応答は大部分の動作範囲において、印加したポンピング電力の単調な函数なので、ループがクローズされ得る。発明者は幾つかの位相同期PQSLシステムを開発して、この位相同期は、完全2オクターブ繰返しを可能にすることを実証した。これはディスプレイシステムや他の装置に必要とされている帯域よりはるかに大きい。
積分器14からの電圧は、レーザダイオード4に供給される電流を制御する。レーザダイオードに流れる電流は、レーザダイオード4からの電力を制御する。レーザダイオード4からの電力はPQSL2のパルス繰返し速度を決定する。図1の実施例において、各ステップでの制御は、ほぼ直線状である。従って、コントローラ3の組み合わせ、レーザダイオード4およびPQSL2は電圧制御発振器と等価である。従って、PQSL2のパルス繰返し速度はレーザダイオード4を介して流れる電流に依存する。さらに、PQSL2からのパルスのタイミングは基準信号発振器12からの信号と関連して制御される。
位相の制御は、前述したように、ディスプレイに加えて他の装置にも重要である。例えば、位相同期ループパルス繰返し速度制御は、メモリ修復のような研削作業用精密マシニングに使われるレーザと関連して使用される。
Claims (17)
- 位相同期ループ制御回路中の電圧制御発振器としてQ−スイッチレーザを用いることを特徴とする、パルス繰返し速度を制御する方法。
- 前記PQSLが検出器と光学的接続されていること、からなる請求項1に記載の方法。
- 前記検出器が、前記位相同期ループコントローラの入力と接続されていること、からなる請求項2に記載の方法。
- 基準信号発振器が、前記位相同期ループコントローラの基準入力と接続されていること、からなる請求項3に記載の方法。
- 前記位相同期ループコントローラの出力が積分器と接続されていること、からなる請求項4に記載の方法。
- 前記積分器が、前記PQSLに供給されるポンピング電力量を制御する手段に接続されていること、からなる請求項5に記載の方法。
- レーザダイオードが前記PQSLにポンピング電力を供給し、前記PQSLに供給されるポンピング電力の量を制御する手段が、レーザダイオードのダイオード電流を制御するダイオードコントローラからなる請求項6に記載の方法。
- 電圧制御発振器として前記Q−スイッチレーザを使用する位相同期ループ制御回路、からなる受動Q−スイッチレーザ(PQSL)を制御するための装置。
- 前記PQSLにポンピング電力を供給するためのレーザダイオード、を更に含む請求項8に記載の装置。
- 前記PQSLと光学的接続されている検出器を更に含む請求項9に記載の装置。
- 入力が、前記検出器に接続されている、位相同期ループコントローラから更になる請求項10に記載の装置。
- 前記位相同期ロープコントローラの基準入力に接続している基準信号発振器を更に含む請求項11に記載の装置。
- 前記位相同期ループコントローラの出力に接続している積分器を更に含む請求項12に記載の装置。
- 前記積分器は、前記レーザダイオードのダイオード電流を制御する手段に接続されていること、から更になる請求項13に記載の装置。
- 位相同期ループ制御された受動Q−スイッチレーザ(PQSL)システムであって、受動Q−スイッチレーザと;
前記PQSLにポンピング電力を供給する手段と;
前記PQSLと光学的接続している検出器と;
入力が前記検出器に接続している位相同期ループコントローラと;
前記位相同期ループコントローラの基準入力と接続している基準信号発振器と;
前記位相同期ループコントローラの出力と接続している積分器であって、前記積分器は、
前記PQSLにポンピング電力を供給する手段を制御するための手段と接続しており、それによって、前記PQSLからのパルスのタイミングが、前記基準信号発振器からの信号に関連して制御される、システム。 - 前記PQSLにポンピング電力を供給するための手段がレーザダイオードを含む請求項15に記載の装置。
- 前記PQSLにポンピング電力を供給するための手段を制御するための手段がレーザダイオードに流れる電流を制御すること、からなる請求項16に記載の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US36593602P | 2002-03-19 | 2002-03-19 | |
US60/365,936 | 2002-03-19 | ||
PCT/US2003/007293 WO2003081731A2 (en) | 2002-03-19 | 2003-03-01 | Phase-locked loop control of passively q-switched lasers |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2005521317A true JP2005521317A (ja) | 2005-07-14 |
JP2005521317A5 JP2005521317A5 (ja) | 2006-03-02 |
JP4856850B2 JP4856850B2 (ja) | 2012-01-18 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2003579325A Expired - Lifetime JP4856850B2 (ja) | 2002-03-19 | 2003-03-01 | 受動q−スイッチレーザの位相同期ループ制御 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6909730B2 (ja) |
EP (1) | EP1488481B1 (ja) |
JP (1) | JP4856850B2 (ja) |
AT (1) | ATE494649T1 (ja) |
AU (1) | AU2003228303A1 (ja) |
DE (1) | DE60335611D1 (ja) |
WO (1) | WO2003081731A2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008232642A (ja) * | 2007-03-16 | 2008-10-02 | Mitsubishi Electric Corp | レーダ装置 |
JP2012142523A (ja) * | 2011-01-06 | 2012-07-26 | Mitsubishi Electric Corp | 受動qスイッチレーザ装置 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4151476B2 (ja) * | 2003-05-14 | 2008-09-17 | ソニー株式会社 | レーザ光安定化方法、レーザ光発生装置 |
US7391794B2 (en) * | 2005-05-25 | 2008-06-24 | Jds Uniphase Corporation | Injection seeding of frequency-converted Q-switched laser |
WO2012177805A2 (en) * | 2011-06-20 | 2012-12-27 | Oewaves, Inc. | Stabilizing rf oscillator based on optical resonator |
GB2497549A (en) * | 2011-12-12 | 2013-06-19 | Thales Holdings Uk Plc | Method and apparatus for use in passive q-switching |
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 |
CN104409960B (zh) * | 2014-11-26 | 2017-08-11 | 山西大学 | 一种自动激光稳频装置及方法 |
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- 2003-03-01 JP JP2003579325A patent/JP4856850B2/ja not_active Expired - Lifetime
- 2003-03-01 DE DE60335611T patent/DE60335611D1/de not_active Expired - Lifetime
- 2003-03-01 AU AU2003228303A patent/AU2003228303A1/en not_active Abandoned
- 2003-03-01 EP EP03726051A patent/EP1488481B1/en not_active Expired - Lifetime
- 2003-03-01 AT AT03726051T patent/ATE494649T1/de not_active IP Right Cessation
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JP2008232642A (ja) * | 2007-03-16 | 2008-10-02 | Mitsubishi Electric Corp | レーダ装置 |
JP2012142523A (ja) * | 2011-01-06 | 2012-07-26 | Mitsubishi Electric Corp | 受動qスイッチレーザ装置 |
Also Published As
Publication number | Publication date |
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WO2003081731A2 (en) | 2003-10-02 |
US6909730B2 (en) | 2005-06-21 |
EP1488481B1 (en) | 2011-01-05 |
AU2003228303A8 (en) | 2003-10-08 |
WO2003081731A3 (en) | 2004-03-25 |
EP1488481A4 (en) | 2009-11-25 |
EP1488481A2 (en) | 2004-12-22 |
DE60335611D1 (de) | 2011-02-17 |
US20030179785A1 (en) | 2003-09-25 |
JP4856850B2 (ja) | 2012-01-18 |
ATE494649T1 (de) | 2011-01-15 |
AU2003228303A1 (en) | 2003-10-08 |
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