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131 条记录 (耗时 0.026 秒)

    SYNCHRONIZED TUNABLE MODE-LOCKED LASERS
    1.
    发明申请
    SYNCHRONIZED TUNABLE MODE-LOCKED LASERS 审中-公开

    公开(公告)号：US20180048112A1

    公开(公告)日：2018-02-15

    申请号：US15667440

    申请日：2017-08-02

    申请人： Halifax Biomedical Inc.

    发明人： Bryan Burgoyne

    IPC分类号： H01S3/11 ,  H01S3/23 ,  H01S3/106 ,  H01S3/08 ,  H01S3/067 ,  H01S3/109 ,  H01S3/10

    CPC分类号： H01S3/1109 ,  H01S3/0675 ,  H01S3/06791 ,  H01S3/08054 ,  H01S3/08086 ,  H01S3/10053 ,  H01S3/1061 ,  H01S3/109 ,  H01S3/2383 ,  H01S3/2391

    摘要： A synchronized laser system for illuminating a sample with first and second laser light pulses, said system comprising: a trigger, said trigger being operative to issue first and second trigger signals, said first and second trigger signals being emitted at an adjustable frequency with a predetermined delay therebetween; a first tunable mode-locked laser operative for emitting said first laser light pulses in response to receiving a train of said first trigger signals, a first wavelength of said first laser light pulses being dependent on said adjustable frequency in accordance with a first wavelength-frequency relationship; a second tunable mode-locked laser operative for emitting said second laser light pulses in response to receiving a train of said second trigger signals, a second wavelength of said second laser light pulses being dependent on said adjustable frequency in accordance with a second wavelength-frequency relationship; wherein said predetermined delay is such that said first and second laser light pulses are emitted so as to arrive substantially simultaneously in said sample; and said first and second wavelength-frequency relationships are selected to result in a predetermined relationship between said first and second wavelengths at each frequency.

    Pulse fiber laser device
    2.
    发明授权
    Pulse fiber laser device 有权
    脉冲光纤激光装置

    公开(公告)号：US08724673B2

    公开(公告)日：2014-05-13

    申请号：US13639310

    申请日：2011-01-24

    申请人： Kodai Fukazawa ,  Masatoshi Fujimoto

    发明人： Kodai Fukazawa ,  Masatoshi Fujimoto

    IPC分类号： H01S3/106 ,  H01S3/11 ,  H01S3/067

    CPC分类号： H01S3/106 ,  G02B6/32 ,  G02B6/4204 ,  H01S3/067 ,  H01S3/06704 ,  H01S3/06745 ,  H01S3/06791 ,  H01S3/08009 ,  H01S3/094003 ,  H01S3/094053 ,  H01S3/09415 ,  H01S3/105 ,  H01S3/1061 ,  H01S3/1115 ,  H01S3/1118 ,  H01S3/1618

    摘要： A pulse fiber laser device 1 has a Fabry-Perot type optical resonator, and is provided with an excitation light source 11, an optical coupling unit 12, an amplifying optical fiber 13, a saturable absorber 14, a gradient index lens 15, an optical output unit 16, a dispersion adjusting unit 17, a mirror 21 and a mirror 22. The saturable absorber 14 and the mirror 21, integrated into one body, constitute a saturable absorber mirror 23. The gradient index lens 15 converges the light output from an end face of an optical fiber 32 and outputs the light to the saturable absorber mirror 23, and inputs the light reflected from the saturable absorber mirror 23 into the end face of the optical fiber 32. Thus, there is provided a pulse fiber laser device that enables easy adjustment of the intensity of light incident on a saturable absorber and facilitates miniaturization.

    摘要翻译： 脉冲光纤激光器件1具有法布里 - 珀罗型光学谐振器，并且设置有激发光源11，光耦合单元12，放大光纤13，可饱和吸收器14，梯度折射率透镜15，光学 输出单元16，色散调节单元17，反射镜21和反射镜22.集成到一体中的可饱和吸收器14和反射镜21构成可饱和吸收镜23.梯度折射率透镜15会聚来自 光纤32的端面，将光输出到可饱和吸收反射镜23，将从可饱和吸收镜23反射的光输入到光纤32的端面。由此，提供了一种脉冲光纤激光装置， 能够容易地调节入射到可饱和吸收体上的光的强度，并且有助于小型化。

    Reduction of timing jitter in a passive Q-switched solid state laser
    3.
    发明授权
    Reduction of timing jitter in a passive Q-switched solid state laser 失效
    在无源Q开关固体激光器中减少定时抖动

    公开(公告)号：US08446925B2

    公开(公告)日：2013-05-21

    申请号：US12696096

    申请日：2010-01-29

    申请人： Lew Goldberg ,  Brian J Cole ,  John E Nettleton ,  Dallas N Barr

    发明人： Lew Goldberg ,  Brian J Cole ,  John E Nettleton ,  Dallas N Barr

    IPC分类号： H01S3/113

    CPC分类号： H01S3/11 ,  H01S3/1061 ,  H01S3/113

    摘要： A method and device for reducing the timing jitter in a passive Q-switched Nd:YAG solid state laser by spatially selective bleaching a thin sheet of a saturable absorber of Cr+4:YAG from a direction orthogonal to the direction of laser emission where the Cr+4:YAG transmission increases 18% when the bleaching probe beam is a single laser diode bar. For steady state operation of a passive Q-switched laser, the pulse-to-pulse timing jitter showed a −12× reduction in standard deviation from 241 nsec for free running operation to 20 nsec with optical triggering.

    摘要翻译： 一种用于通过空间选择性地从与激光发射方向垂直的方向漂白Cr + 4：YAG的可饱和吸收体的薄片来减少无源Q开关Nd：YAG固体激光器中的定时抖动的方法和装置，其中 当漂白探针光束是单个激光二极管条时，Cr + 4：YAG传输增加18％。 对于无源Q开关激光器的稳态操作，脉冲到脉冲定时抖动在自由运行操作时从241ns的标准偏差减小到±20°，光触发时间为20ns。

    RING OR LINEAR CAVITY OF ALL-FIBER-BASED ULTRA SHORT PULSE LASER SYSTEM AND METHOD OF OPERATING THE SAME
    4.
    发明申请
    RING OR LINEAR CAVITY OF ALL-FIBER-BASED ULTRA SHORT PULSE LASER SYSTEM AND METHOD OF OPERATING THE SAME 有权
    基于全光纤的超短脉冲激光系统的环形或线性孔径及其操作方法

    公开(公告)号：US20110158265A1

    公开(公告)日：2011-06-30

    申请号：US12725292

    申请日：2010-03-16

    申请人： Yao-Wen Chang ,  Chien-Ming Huang

    发明人： Yao-Wen Chang ,  Chien-Ming Huang

    IPC分类号： H01S3/083 ,  H01S3/30

    CPC分类号： H01S3/06791 ,  H01S3/06725 ,  H01S3/094076 ,  H01S3/1061 ,  H01S3/1118 ,  H01S3/1618

    摘要： A ring-cavity or linear-cavity all-fiber-based ultra short pulse laser system and method of operating the same are provided. The all-fiber-based ultra short pulse laser system includes a pulse pump light source, a gain fiber, a first fiber signal pump combining unit, a broadband optical isolator, a fiber saturable absorber, an assistant light source, a second fiber signal pump combining unit, and a light coupling output. The first fiber signal pump combining unit is respectively connected to the pulse pump light source and the gain fiber to emit broadband amplified spontaneous emission, then the broadband amplified spontaneous emission passes through the broadband optical isolator. The second fiber signal pump combining unit is respectively connected to the assistant light source and the fiber saturable absorber. An ASE signal actively provides passive mode locking of the cavity, and the light coupling output partially outputs the laser. A dispersion fiber controls the temporal width.

    摘要翻译： 提供了一种环腔或线性腔全光纤超短脉冲激光系统及其操作方法。 全光纤超短脉冲激光系统包括脉冲泵浦光源，增益光纤，第一光纤信号泵组合单元，宽带光隔离器，光纤饱和吸收器，辅助光源，第二光纤信号泵 组合单元和光耦合输出。 第一光纤信号泵组合单元分别连接到脉冲泵浦光源和增益光纤发射宽带放大自发辐射，然后宽带放大自发发射通过宽带光隔离器。 第二光纤信号泵组合单元分别连接到辅助光源和光纤可饱和吸收器。 ASE信号主动提供空腔的被动模式锁定，并且光耦合输出部分地输出激光。 分散纤维控制时间宽度。

    SUPPRESSION OF MODE-BEATING NOISE IN A Q-SWITCHED PULSED LASER USING NOVEL Q-SWITCH DEVICE AND APPLICATIONS
    6.
    发明申请
    SUPPRESSION OF MODE-BEATING NOISE IN A Q-SWITCHED PULSED LASER USING NOVEL Q-SWITCH DEVICE AND APPLICATIONS 审中-公开
    使用新型Q开关器件和应用程序抑制Q开关脉冲激光中的模式噪声的抑制

    公开(公告)号：US20070189342A1

    公开(公告)日：2007-08-16

    申请号：US11733992

    申请日：2007-04-11

    申请人： Denis Gendron

    发明人： Denis Gendron

    IPC分类号： H01S3/11

    CPC分类号： H01S3/08031 ,  H01S3/1061 ,  H01S3/113 ,  H01S3/115 ,  H01S3/117 ,  H01S3/127 ,  H01S2301/02

    摘要： A novel Q-switch device enables significant quality and value improvement for a Q-switched laser system by achieving a significant reduction of mode-beating noise during the pulsed output. The origin of mode-beating noise in a Q-switched laser is a result of high gain availability and amplification of competing standing-waves in formation, whose optical frequency is a product of natural selection via spatial hole burning in the gain medium. The novel Q-switch device employs an active, electro-optics or acousto-optics, Q-switch in combination with a saturable absorber device, to provide an optimized soft opening of the optical path and a controlled timing of a Q-switched laser. This novel combination offers larger modulation loss than otherwise possible with the active modulator alone, and it allows for higher gain build-up and energy extraction efficiency. Specifically, it will enable a low-voltage modulator ( 10) and Q-switched operation at high repetition rate (>10 kHz). The combination is devised to slow down the signal build-up and to sweep the fundamental longitudinal mode frequency at least within the free spectral range of the resonator, such that it varies adiabatically during the Q-switched pulse formation. A laser geometry amenable to high gain and high power is proposed for use in conjunction with the proposed novel Q-switch device. The invention will enable the deployment of cost-effective Q-switched lasers operating in both single-longitudinal and single-transverse (TEM00) mode.

    摘要翻译： 一种新颖的Q开关器件通过在脉冲输出期间实现显着降低振铃噪声，可以为Q开关激光器系统提供显着的质量和价值改进。 Q开关激光器中的抖动噪声的起源是由于增益可用性和形成中的竞争性驻波的放大而导致的，其光频率是通过增益介质中的空间孔燃烧进行自然选择的乘积。 新颖的Q开关器件采用有源，电光或声光Q开关与可饱和吸收器件组合，以提供光路的优化软开路和Q开关激光器的受控时序。 这种新颖的组合提供比单独的有源调制器更大的调制损耗，并且其允许更高的增益积聚和能量提取效率。 具体来说，它将使低电压调制器（<100 V）获得高增益（小信号增益> 10）和高重复频率（> 10 kHz）的Q开关操作。 该组合被设计为减缓信号积聚并且至少在谐振器的自由光谱范围内扫描基本纵向模式频率，使得其在Q开关脉冲形成期间以绝热方式变化。 提出了适用于高增益和高功率的激光几何结构，与所提出的新型Q开关器件结合使用。 本发明将能够部署以单纵向和单横向（TEM <00> 00）模式工作的成本有效的Q开关激光器。

    Modulated saturable absorber controlled laser
    8.
    发明申请
    Modulated saturable absorber controlled laser 有权
    调制饱和吸收器控制激光

    公开(公告)号：US20050226280A1

    公开(公告)日：2005-10-13

    申请号：US10820613

    申请日：2004-04-08

    申请人： Kalin Spariosu ,  Milton Birnbaum

    发明人： Kalin Spariosu ,  Milton Birnbaum

    IPC分类号： G02F1/01 ,  G02F1/35 ,  H01S3/06 ,  H01S3/098 ,  H01S3/106 ,  H01S3/113

    CPC分类号： H01S3/0627 ,  G02F1/0126 ,  G02F1/3523 ,  H01S3/0604 ,  H01S3/08054 ,  H01S3/106 ,  H01S3/1061 ,  H01S3/1109 ,  H01S3/113

    摘要： A modulated saturable absorber controlled laser. The laser includes an active medium; a saturable absorber material operationally coupled to the medium to serve as a passive Q switch; and an energy source disposed external to the medium for apply energy to the absorber. In particular embodiments, the energy source is a diode laser and focusing optics are included between the diode laser and the absorber. Modulation of the gain at the photon round trip time in the laser resonator causes a mode-locked laser output. A dichroic beamsplitter is included in this embodiment for directing energy to the absorber. In an alternative embodiment, the diode laser is a quasi-monolithic diode laser assembly ring.

    摘要翻译： 调制可饱和吸收器受控激光器。 激光器包括活性介质; 可操作地耦合到介质以用作无源Q开关的可饱和吸收材料; 以及设置在介质外部以将能量施加到吸收器的能量源。 在特定实施例中，能量源是二极管激光器，并且聚焦光学器件包括在二极管激光器和吸收器之间。 在激光谐振器中调制光子往返时间的增益导致锁模激光输出。 本实施例中包括二向色分束器，用于将能量引导到吸收器。 在替代实施例中，二极管激光器是准单片二极管激光器组件环。

    Suppression of mode-beating noise in a Q-switched pulsed laser using novel Q-switch device and applications
    9.
    发明申请
    Suppression of mode-beating noise in a Q-switched pulsed laser using novel Q-switch device and applications 有权
    使用新型Q开关器件和应用来抑制Q开关脉冲激光器中的抖动噪声

    公开(公告)号：US20050213617A1

    公开(公告)日：2005-09-29

    申请号：US10792782

    申请日：2004-03-05

    申请人： Denis Gendron

    发明人： Denis Gendron

    IPC分类号： H01S3/115 ,  H01S3/098 ,  H01S3/11 ,  H01S3/113 ,  H01S3/117

    CPC分类号： H01S3/08031 ,  H01S3/1061 ,  H01S3/113 ,  H01S3/115 ,  H01S3/117 ,  H01S3/127 ,  H01S2301/02

    摘要： A novel Q-switch device enables significant quality and value improvement for a Q-switched laser system by achieving a significant reduction of mode-beating noise during the pulsed output. The origin of mode-beating noise in a Q-switched laser is a result of high gain availability and amplification of competing standing-waves in formation, whose optical frequency is a product of natural selection via spatial hole burning in the gain medium. The novel Q-switch device employs an active, electro-optics or acousto-optics, Q-switch in combination with a saturable absorber device, to provide an optimized soft opening of the optical path and a controlled timing of a Q-switched laser. This novel combination offers larger modulation loss than otherwise possible with the active modulator alone, and it allows for higher gain build-up and energy extraction efficiency. Specifically, it will enable a low-voltage modulator ( 10) and Q-switched operation at high repetition rate (>10 kHz). The combination is devised to slow down the signal build-up and to sweep the fundamental longitudinal mode frequency at least within the free spectral range of the resonator, such that it varies adiabatically during the Q-switched pulse formation. A laser geometry amenable to high gain and high power is proposed for use in conjunction with the proposed novel Q-switch device. The invention will enable the deployment of cost-effective Q-switched lasers operating in both single-longitudinal and single-transverse (TEM00) mode.

    摘要翻译： 一种新颖的Q开关器件通过在脉冲输出期间实现显着降低振铃噪声，可以为Q开关激光器系统提供显着的质量和价值改进。 Q开关激光器中的抖动噪声的起源是由于增益可用性和形成中的竞争性驻波的放大而导致的，其光频率是通过增益介质中的空间孔燃烧进行自然选择的乘积。 新颖的Q开关器件采用有源，电光或声光Q开关与可饱和吸收器件组合，以提供光路的优化软开路和Q开关激光器的受控时序。 这种新颖的组合提供比单独的有源调制器更大的调制损耗，并且其允许更高的增益积聚和能量提取效率。 具体来说，它将使低电压调制器（<100 V）获得高增益（小信号增益> 10）和高重复频率（> 10 kHz）的Q开关操作。 该组合被设计为减缓信号积聚并且至少在谐振器的自由光谱范围内扫描基本纵向模式频率，使得其在Q开关脉冲形成期间以绝热方式变化。 提出了适用于高增益和高功率的激光几何结构，与所提出的新型Q开关器件结合使用。 本发明将能够部署以单纵向和单横向（TEM <00> 00）模式工作的成本有效的Q开关激光器。