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1. 发明申请

WO2013088139A1 METHOD AND APPARATUS FOR USE IN PASSIVE Q-SWITCHING 审中-公开
标题翻译：用于无源Q开关的方法和装置
公开(公告)号：WO2013088139A1
公开(公告)日：2013-06-20
申请号：PCT/GB2012/053103
申请日：2012-12-12
申请人： THALES HOLDINGS UK PLC
发明人： COOK, Trevor , LEE, Stephen , ALEXANDER, William
IPC分类号： H01S3/113 , H01S3/131 , H01S3/0941 , H01S3/13
CPC分类号： H01S3/113 , H01S3/0941 , H01S3/10046 , H01S3/1305 , H01S3/1312 , H01S3/1611 , H01S3/1643
摘要： A method for use in controlling a passively Q-switched laser apparatus (110) comprises triggering pumping of a passively Q-switched laser apparatus at a pump trigger time, measuring an emission delay between the pump trigger time and a time of emission of a Q-switched optical pulse from the laser apparatus. The method further comprises using the measured emission delay and a target time for the emission of a further Q-switched optical pulse from the laser apparatus to determine a further pump trigger time. The method may be used for improving the timing of emission of Q-switched optical pulses and may, in particular, serve to suppress pulse-to-pulse timing jitter in particular, though not exclusively, for laser target designation. The laser comprises an end mirror (122), an active gain medium (126), a passive Q-switch (128), an output coupler (124), a beam splitter (146), a photodetector 144), the electrical signal (148) of which is evaluated by a controller (140). The controller provides information to the laser diode driver (132) which drives the laser diode (130) emitting light (136) for pumping the active gain (126). Jitter in the repetition rate of the passively Q-switched laser can be reduced by pump power control.
摘要翻译：一种用于控制被动Q开关激光装置（110）的方法包括在泵浦触发时间触发被动Q开关激光装置的泵送，测量泵触发时间与Q发射时间之间的发射延迟来自激光装置的切换的光脉冲。该方法还包括使用测量的发射延迟和用于从激光装置发射另外的Q开关光脉冲的目标时间来确定另外的泵触发时间。该方法可以用于改善Q开关光脉冲的发射定时，并且特别地可以用于抑制脉冲到脉冲定时抖动，特别是用于激光目标指定，但不限于此。激光器包括端镜（122），有源增益介质（126），无源Q开关（128），输出耦合器（124），分束器（146），光电检测器144），电信号 148）由控制器（140）评估。控制器向激光二极管驱动器（132）提供信息，激光二极管驱动器（132）驱动激发二极管（130）发射用于泵送有源增益（126）的光（136）。通过泵浦功率控制可以减少被动Q开关激光器的重复频率抖动。

2. 发明申请

WO2013079941A1 LASER PUMPING SYSTEM 审中-公开
标题翻译：激光泵系统
公开(公告)号：WO2013079941A1
公开(公告)日：2013-06-06
申请号：PCT/GB2012/052943
申请日：2012-11-29
申请人： THALES HOLDINGS UK PLC
发明人： COOK, Trevor , LEE, Stephen , ALEXANDER, William
IPC分类号： H01S3/094 , H01S3/131 , H01S5/40 , H01S5/068
CPC分类号： H01S3/094096 , H01S3/0941 , H01S3/1022 , H01S3/1312 , H01S5/06804 , H01S5/0687 , H01S5/4087
摘要： The invention relates to a pumping system (5) for pumping a gain medium of a laser, the pumping system (5) comprising a radiation source, the radiation source comprising a plurality of emitters (10a, 10b, 10c, 10d, 10e), wherein at least one of the emitters is configured to produce radiation having a different wavelength or a different band of wavelengths to at least one other of the emitters at a given temperature.
摘要翻译：本发明涉及一种用于泵送激光增益介质的泵送系统（5），所述泵送系统（5）包括辐射源，所述辐射源包括多个发射器（10a，10b，10c，10d，10e），其中所述发射器中的至少一个被配置为在给定温度下产生具有不同波长或不同波长带的辐射至所述发射器中的至少另一个的辐射。

3. 发明申请

WO2014049324A1 LASER DIODE SIDE PUMPING OF AN ELONGATED SOLID-STATE LASER WITHOUT FOCUSING|OPTICS 审中-公开
标题翻译：无焦点激光固体激光器的激光二极管泵浦| OPTICS
公开(公告)号：WO2014049324A1
公开(公告)日：2014-04-03
申请号：PCT/GB2013/052121
申请日：2013-08-08
申请人： THALES HOLDINGS UK PLC
发明人： COOK, Trevor , LEE, Stephen , SILVER, Mark
IPC分类号： H01S3/06 , H01S3/0941 , H01S3/094 , H01S3/113 , H01S3/02 , H01S3/04
CPC分类号： H01S3/0941 , H01S3/025 , H01S3/0405 , H01S3/0606 , H01S3/061 , H01S3/0617 , H01S3/0625 , H01S3/094084 , H01S3/11 , H01S3/113 , H01S3/1608 , H01S3/1618 , H01S3/17 , H01S5/4025
摘要： A side pumped laser comprises an elongated gain medium (10) provided between an output coupler (20) and a counter reflector(15) and a pump source(65) configured to provide radiation to the gain medium (10) along a side axis of the gain medium, wherein the laser is configured such that radiation from the pump source is directly incident on the gain medium; and the pump source is provided proximate, adjacent or in contact with the gain medium. The laser material and compositions, geometries and dimensions are designed to both maximise laser performance and to permit the use of construction techniques commonplace in the production of equipment designed for optical telecoms systems to facilitate low cost high volume and miniaturisation. The elongated gain medium (10) may have a polygonal cross-section with a non-coated side surface (55) receiving pump light emitted by a laser diode bar (65) while the other, non-emitting surfaces are coated with for example a gold coating (60) for pump light recycling and cooling of the gain medium by heat conduction. The counter reflector (15) may be provided on one facet of a passive Q-switch (30) and the output coupler (20) on a facet (50b) of the gain medium (10).
摘要翻译：侧泵浦激光器包括设置在输出耦合器（20）和反向反射器（15）之间的细长增益介质（10）和泵源（65），其被构造成沿着侧向轴线的侧轴向增益介质（10）提供辐射所述增益介质，其中所述激光器被配置为使得来自所述泵浦源的辐射直接入射在所述增益介质上; 并且所述泵浦源被设置为接近，相邻或与所述增益介质接触。激光材料和组合物，几何形状和尺寸被设计成最大限度地提高激光器性能，并允许在为光通信系统设计的设备的生产中常用的构造技术使用，以便于低成本大容量和小型化。细长增益介质（10）可以具有多边形横截面，其中未涂覆的侧表面（55）接收由激光二极管棒（65）发射的泵浦光，而另一个非发射表面涂覆有例如金涂层（60），用于泵光回收和通过热传导冷却增益介质。反射器（15）可以设置在无源Q开关（30）的一个面上，输出耦合器（20）位于增益介质（10）的小平面（50b）上。

4. 发明申请

WO2016193727A1 CONTROLLING EMISSION OF PASSIVE Q-SWITCHED LASER PULSES 审中-公开
标题翻译：无源Q开关激光脉冲发射的控制
公开(公告)号：WO2016193727A1
公开(公告)日：2016-12-08
申请号：PCT/GB2016/051619
申请日：2016-06-02
申请人： THALES HOLDINGS UK PLC
发明人： COOK, Trevor , SILVER, Mark , LEE, Stephen
IPC分类号： H01S3/0941 , G01S17/08 , H01S3/102 , H01S3/113 , H01S3/16 , H01S3/17 , H01S3/13 , H01S3/131
CPC分类号： H01S3/113 , G01S7/484 , G01S17/10 , H01S3/09415 , H01S3/1024 , H01S3/1305 , H01S3/1312 , H01S3/1608 , H01S3/17
摘要： A method for controlling emission of optical pulses from a passive Q-switched laser apparatus comprises pumping a gain medium of a passive Q-switched laser apparatus for the emission of a plurality of Q-switched optical pulses from the laser apparatus. The method may further comprise pumping the gain medium so as to maintain an optical gain provided by the gain medium above an unpumped optical gain level for the duration of a time period from emission of one Q-switched optical pulse to emission of a subsequent Q-switched optical pulse. The method may further comprise varying a rate of pumping of the gain medium between emission of the one Q-switched optical pulse and emission of the subsequent Q-switched optical pulse so as to control the temporal separation between the one Q-switched optical pulse and the subsequent Q-switched optical pulse. The gain medium may comprise a solid state gain medium. The method may comprise optically pumping the gain medium.
摘要翻译：一种用于控制来自无源Q开关激光装置的光脉冲的发射的方法包括泵浦无源Q开关激光装置的增益介质，用于从激光装置发射多个Q开关光脉冲。该方法可以进一步包括泵浦增益介质，以便在从一个Q开关光脉冲的发射到随后的Q-开关光脉冲的发射的持续时间段内，将由增益介质提供的光增益保持在未使用的光学增益水平之上。开关光脉冲。该方法还可以包括改变在一个Q开关光脉冲的发射和随后的Q开关光脉冲的发射之间的增益介质的泵浦速率，以便控制一个Q开关光脉冲和随后的Q开关光脉冲。增益介质可以包括固态增益介质。该方法可以包括光学泵浦增益介质。

5. 发明申请

WO2013079943A1 STABLE THERMAL LENS IN A Q- SWITCHED SOLID-STATE LASER BY PUMP LIGHT CONTROL 审中-公开
标题翻译：通过泵浦灯控制在Q-切换的固态激光器中的稳定的热透镜
公开(公告)号：WO2013079943A1
公开(公告)日：2013-06-06
申请号：PCT/GB2012/052946
申请日：2012-11-29
申请人： THALES HOLDINGS UK PLC
发明人： LEE, Stephen , ALEXANDER, William , COOK, Trevor
IPC分类号： H01S3/102 , H01S3/08 , H01S3/06 , H01S3/094 , H01S3/0941
CPC分类号： H01S3/08072 , H01S3/061 , H01S3/094076 , H01S3/09408 , H01S3/0941 , H01S3/1022 , H01S3/113
摘要： The invention relates to a pulsed laser apparatus comprising a rod- type solid-state gain medium (15) and at least one energy source for providing energy to the gain medium, wherein the apparatus is configured to selectively provide thermal compensation energy from the energy source to the gain medium when the thermal load of the gain medium and/or a pulse rate of the apparatus is below an optimum value. A transverse pumping scheme may be used with laser diode (35) pumping and being controlled by a pump diode driver (40). The resonator comprises further a HR mirror (30) and an output coupler (20) and a passive Q-switch (25). The curvature of the output coupler is chosen to realize a stable resonator for the gain medium (15) having a constant thermal lens. Between the pump pulses (60) resulting in lasing, additional pump pulses (70a-e) are provided with the laser being below threshold but keeping the thermal lens inside the gain medium constant.
摘要翻译：本发明涉及一种包括棒状固态增益介质（15）和用于向增益介质提供能量的至少一个能量源的脉冲激光装置，其中该装置构造成从能量源选择性地提供热补偿能量当增益介质的热负荷和/或设备的脉冲速率低于最佳值时，到增益介质。可以使用激光二极管（35）泵浦并由泵浦二极管驱动器（40）控制的横向泵浦方案。谐振器还包括HR镜（30）和输出耦合器（20）和无源Q开关（25）。选择输出耦合器的曲率以实现具有恒定热透镜的增益介质（15）的稳定谐振器。在导致激光的泵浦脉冲（60）之间，提供附加的泵浦脉冲（70a-e），其中激光低于阈值，但将热透镜保持在增益介质内部恒定。

6. 发明公开

EP2786455A1 LASER PUMPING SYSTEM 审中-公开
标题翻译： LASERPUMPSYSTEM
公开(公告)号：EP2786455A1
公开(公告)日：2014-10-08
申请号：EP12810405.6
申请日：2012-11-29
申请人： Thales Holdings UK Plc
发明人： COOK, Trevor , LEE, Stephen , ALEXANDER, William
IPC分类号： H01S3/094 , H01S3/131 , H01S5/40 , H01S5/068
CPC分类号： H01S3/094096 , H01S3/0941 , H01S3/1022 , H01S3/1312 , H01S5/06804 , H01S5/0687 , H01S5/4087
摘要： The invention relates to a pumping system (5) for pumping a gain medium of a laser, the pumping system (5) comprising a radiation source, the radiation source comprising a plurality of emitters (10a, 10b, 10c, 10d, 10e), wherein at least one of the emitters is configured to produce radiation having a different wavelength or a different band of wavelengths to at least one other of the emitters at a given temperature.

7. 发明公开

EP2901530A1 LASER DIODE SIDE PUMPING OF AN ELONGATED SOLID-STATE LASER WITHOUT FOCUSING!OPTICS 审中-公开
标题翻译：带侧泵的长形的固态激光器激光二极管无聚焦光学系统
公开(公告)号：EP2901530A1
公开(公告)日：2015-08-05
申请号：EP13750914.7
申请日：2013-08-08
申请人： Thales Holdings UK Plc
发明人： COOK, Trevor , LEE, Stephen , SILVER, Mark
IPC分类号： H01S3/06 , H01S3/0941 , H01S3/094 , H01S3/113 , H01S3/02 , H01S3/04
CPC分类号： H01S3/0941 , H01S3/025 , H01S3/0405 , H01S3/0606 , H01S3/061 , H01S3/0617 , H01S3/0625 , H01S3/094084 , H01S3/11 , H01S3/113 , H01S3/1608 , H01S3/1618 , H01S3/17 , H01S5/4025
摘要： A side pumped laser comprises an elongated gain medium (10) provided between an output coupler (20) and a counter reflector(15) and a pump source(65) configured to provide radiation to the gain medium (10) along a side axis of the gain medium, wherein the laser is configured such that radiation from the pump source is directly incident on the gain medium; and the pump source is provided proximate, adjacent or in contact with the gain medium. The laser material and compositions, geometries and dimensions are designed to both maximise laser performance and to permit the use of construction techniques commonplace in the production of equipment designed for optical telecoms systems to facilitate low cost high volume and miniaturisation. The elongated gain medium (10) may have a polygonal cross-section with a non-coated side surface (55) receiving pump light emitted by a laser diode bar (65) while the other, non-emitting surfaces are coated with for example a gold coating (60) for pump light recycling and cooling of the gain medium by heat conduction. The counter reflector (15) may be provided on one facet of a passive Q-switch (30) and the output coupler (20) on a facet (50b) of the gain medium (10).
摘要翻译：在输出耦合器（20）之间设置有细长的增益介质（10）并配置成提供辐射到沿侧轴增益介质（10）上的反向反射器（15）和泵源（65）的侧面泵浦激光器包括增益介质，worin激光器被配置搜索的确从泵浦源辐射直接入射到增益介质上; 和泵浦源被设置靠近，相邻或与所述增益介质接触。激光材料和组合物的几何形状和尺寸被设计成最大化这两个激光性能并允许使用在生产设计成用于光学电信系统，以利于低成本高容量化及小型化的设备普遍构造技术。细长增益介质（10）可以具有多边形横截面，接收由一个激光二极管条（65）发射的泵浦光的非涂覆侧表面（55），而其他的非发光表面涂有例如金涂层（60），用于通过热传导泵浦光再循环和增益介质的冷却。反向反射器（15）可以在一个面设置在被动Q开关（30）和输出耦合器（20）的一个面增益介质（10）的（50B）。

8. 发明公开

EP2786456A1 STABLE THERMAL LENS IN A Q- SWITCHED SOLID-STATE LASER BY PUMP LIGHT CONTROL 审中-公开
标题翻译：热稳定镜头Q开关固态激光器泵浦光控制
公开(公告)号：EP2786456A1
公开(公告)日：2014-10-08
申请号：EP12813073.9
申请日：2012-11-29
申请人： Thales Holdings UK Plc
发明人： LEE, Stephen , ALEXANDER, William , COOK, Trevor
IPC分类号： H01S3/102 , H01S3/08 , H01S3/06 , H01S3/094 , H01S3/0941
CPC分类号： H01S3/08072 , H01S3/061 , H01S3/094076 , H01S3/09408 , H01S3/0941 , H01S3/1022 , H01S3/113
摘要： The invention relates to a pulsed laser apparatus comprising a rod- type solid-state gain medium (15) and at least one energy source for providing energy to the gain medium, wherein the apparatus is configured to selectively provide thermal compensation energy from the energy source to the gain medium when the thermal load of the gain medium and/or a pulse rate of the apparatus is below an optimum value. A transverse pumping scheme may be used with laser diode (35) pumping and being controlled by a pump diode driver (40). The resonator comprises further a HR mirror (30) and an output coupler (20) and a passive Q-switch (25). The curvature of the output coupler is chosen to realize a stable resonator for the gain medium (15) having a constant thermal lens. Between the pump pulses (60) resulting in lasing, additional pump pulses (70a-e) are provided with the laser being below threshold but keeping the thermal lens inside the gain medium constant.

9. 发明公开

EP3101742A1 CONTROLLING EMISSION OF AN OPTICAL PULSE FROM A LASER 审中-公开
标题翻译： STEUERUNG DER EISES EINES OPTISCHEN PULSES AUS EINEM LASER
公开(公告)号：EP3101742A1
公开(公告)日：2016-12-07
申请号：EP16172729.2
申请日：2016-06-02
申请人： Thales Holdings UK Plc
发明人： LEE, Stephen , ALEXANDER, William , COOK, Trevor
IPC分类号： H01S3/106 , H01S3/113 , H01S3/16 , H01S3/0941
CPC分类号： H01S3/113 , G01S17/08 , H01S3/0941 , H01S3/1022 , H01S3/1061 , H01S3/1618 , H01S3/1643
摘要： A method for use in controlling emission of an optical pulse from a laser comprises pumping a gain medium (10) of a laser at a rate which is limited so that free-running passive Q-switching of the laser is prevented regardless of a duration of pumping of the gain medium. The method further comprises triggering a saturable absorber (12) of the laser so as to reduce a laser cavity loss below a laser cavity gain and cause an optical pulse to be emitted from the laser at a desired emission time. Such a method may provide for the reduction of pulse-to-pulse timing jitter, the control of energy of the emitted optical pulse and/or for the suppression of the emission of multiple optical pulses that may otherwise occur for free-running passive Q-switching of the laser for sufficient gain medium pumping rates.
摘要翻译：用于控制来自激光器的光脉冲的发射的方法包括以限制的速率泵浦激光的增益介质（10），以便防止激光的自由运行的无源Q切换，而不管持续时间如何泵送增益介质。该方法还包括触发激光器的可饱和吸收体（12），以便减少低于激光腔增益的激光腔损耗并且使得在期望的发射时间从激光器发射光脉冲。这种方法可以提供脉冲到脉冲定时抖动的减少，发射的光脉冲的能量的控制和/或用于抑制可能出现的自由运行的被动Q-脉冲的多个光脉冲的发射。切换激光以获得足够的增益介质泵送速率。

10. 发明公开

EP2792034A1 METHOD AND APPARATUS FOR USE IN PASSIVE Q-SWITCHING 审中-公开
标题翻译：方法和设备中使用的被动Q-CIRCUIT
公开(公告)号：EP2792034A1
公开(公告)日：2014-10-22
申请号：EP12810412.2
申请日：2012-12-12
申请人： Thales Holdings UK Plc
发明人： COOK, Trevor , LEE, Stephen , ALEXANDER, William
IPC分类号： H01S3/113 , H01S3/131 , H01S3/0941 , H01S3/13
CPC分类号： H01S3/113 , H01S3/0941 , H01S3/10046 , H01S3/1305 , H01S3/1312 , H01S3/1611 , H01S3/1643
摘要： A method for use in controlling a passively Q-switched laser apparatus (110) comprises triggering pumping of a passively Q-switched laser apparatus at a pump trigger time, measuring an emission delay between the pump trigger time and a time of emission of a Q-switched optical pulse from the laser apparatus. The method further comprises using the measured emission delay and a target time for the emission of a further Q-switched optical pulse from the laser apparatus to determine a further pump trigger time. The method may be used for improving the timing of emission of Q-switched optical pulses and may, in particular, serve to suppress pulse-to-pulse timing jitter in particular, though not exclusively, for laser target designation. The laser comprises an end mirror (122), an active gain medium (126), a passive Q-switch (128), an output coupler (124), a beam splitter (146), a photodetector 144), the electrical signal (148) of which is evaluated by a controller (140). The controller provides information to the laser diode driver (132) which drives the laser diode (130) emitting light (136) for pumping the active gain (126). Jitter in the repetition rate of the passively Q-switched laser can be reduced by pump power control.

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