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    Pulse slicer in laser systems
    1.
    发明授权
    Pulse slicer in laser systems 有权

    公开(公告)号：US10096963B2

    公开(公告)日：2018-10-09

    申请号：US15807418

    申请日：2017-11-08

    Applicant: LUMENIS LTD.

    Inventor： John B. Lee

    IPC: H01S3/00 ,  H01S3/092 ,  H01S3/10 ,  H01S3/127 ,  H01S3/23 ,  H01S3/16 ,  H01S3/115 ,  H01S3/0941 ,  G02B27/28

    Abstract: An apparatus (such as a laser-based system) and method for providing optical pulses in a broad range of pulse widths and pulse energies uses a pulse slicer which is configured to slice a predefined portion having a desired pulse width of each of the one or more output optical pulses from a laser oscillator, in which timings of a rising edge and a falling edge of each sliced optical pulse relative to a time instance of a maximum of the corresponding each of the one or more output optical pulses from the laser oscillator, are chosen at least to maximize amplification efficiency of the optical amplifier, which may be located after the pulse slicer, and to provide the one or more amplified output optical pulses each having the desired pulse energy and pulse width.

    Laser device and method
    2.
    发明授权
    Laser device and method 有权
    激光装置及方法

    公开(公告)号：US09106054B2

    公开(公告)日：2015-08-11

    申请号：US14187308

    申请日：2014-02-23

    Applicant: LEE LASER, INC.

    Inventor： Dwight Kimberlin ,  Donald Bishop

    IPC: H01S3/127 ,  G02B27/10 ,  G02B27/14 ,  G02B19/00 ,  H01S3/0941 ,  H01S3/11 ,  H01S3/16 ,  H01S3/23

    CPC classification number: H01S3/127 ,  G02B19/0028 ,  G02B19/0057 ,  G02B27/1006 ,  G02B27/1073 ,  G02B27/14 ,  G02B27/144 ,  G02B27/145 ,  H01S3/09415 ,  H01S3/11 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/23

    Abstract: A laser beam combining and power scaling device and method. A first highly reflective mirror residing perpendicular to the first optical axis reflecting radiation emitted from the first laser head. A first Q-switch in alignment with the first optical axis interposed between the first highly reflective mirror and the first laser head. A second highly reflective mirror residing perpendicular to the second optical axis reflecting radiation emitted from the second laser head. The second Q-switch in alignment with the second optical axis is interposed between the second highly reflective mirror and the first laser head. A third optical axis is coincident with the first optical axis. A third highly reflective mirror residing perpendicular to the third optical axis in alignment therewith. The third optical axis may include a third diode pumped laser head and Q-switch. A beam splitter resides at the intersection of the axes.

    Abstract translation: 激光束组合和功率缩放装置及方法。 第一高反射镜，其垂直于第一光轴垂直，反射从第一激光头发射的辐射。 第一Q开关，其与插入在第一高反射镜和第一激光头之间的第一光轴对准。 第二高反射镜，垂直于第二光轴，反射从第二激光头发出的辐射。 与第二光轴对准的第二Q开关设置在第二高反射镜和第一激光头之间。 第三光轴与第一光轴重合。 第三高反射镜，其垂直于与其对准的第三光轴。 第三光轴可以包括第三二极管泵浦激光头和Q开关。 分束器位于轴的相交处。

    Q-switched oscillator seed-source for MOPA laser illuminator method and apparatus
    3.
    发明授权
    Q-switched oscillator seed-source for MOPA laser illuminator method and apparatus 有权
    用于MOPA激光照明器的Q开关振荡器种子源方法和装置

    公开(公告)号：US08934509B2

    公开(公告)日：2015-01-13

    申请号：US12952190

    申请日：2010-11-22

    Applicant: Matthias P. Savage-Leuchs ,  Christian E. Dilley ,  Charles A. Lemaire

    Inventor： Matthias P. Savage-Leuchs ,  Christian E. Dilley ,  Charles A. Lemaire

    IPC: H01S3/11 ,  H01S3/067 ,  H01S3/102 ,  H01S5/14 ,  H01S3/23 ,  H01S3/115 ,  H01S3/127 ,  H01S3/113 ,  H01S3/094

    CPC classification number: H01S3/06758 ,  B60Q1/0076 ,  H01S3/06704 ,  H01S3/06712 ,  H01S3/06716 ,  H01S3/0675 ,  H01S3/06791 ,  H01S3/094003 ,  H01S3/094011 ,  H01S3/094053 ,  H01S3/0941 ,  H01S3/1022 ,  H01S3/113 ,  H01S3/115 ,  H01S3/127 ,  H01S3/2316 ,  H01S5/146 ,  H01S2301/03

    Abstract: An apparatus, method and system that uses a Q-switched laser or a Q-seed source for a seed pulse signal having a controlled high-dynamic-range amplitude that avoids and/or compensates for pulse steepening in high-gain optical-fiber and/or optical-rod amplification of optical pulses. Optionally, the optical output is used for LIDAR or illumination purposes (e.g., for image acquisition). In some embodiments, well-controlled pulse shapes are obtained having a wide dynamic range, long duration, and not-too-narrow linewidth. In some embodiments, upon the opening of a Q-switch in an optical cavity having a gain medium, the amplification builds relatively slowly, wherein each round trip through the gain medium increases the amplitude of the optical pulse. Other embodiments use quasi-Q-switch devices or a plurality of amplitude modulators to obtain Q-seed pulses. These configurations provide optical pulses having wide dynamic ranges that ameliorate problems of pulse steepening, non-linear spectral broadening and the like in very-high-power MOPA devices.

    Abstract translation: 一种使用Q开关激光器或Q种子源用于具有受控的高动态范围幅度的种子脉冲信号的装置，方法和系统，其避免和/或补偿高增益光纤中的脉冲陡峭，以及 /或光学脉冲的光棒放大。 可选地，光输出用于LIDAR或照明目的（例如，用于图像采集）。 在一些实施例中，获得具有宽动态范围，长持续时间和不太窄线宽的良好控制的脉冲形状。 在一些实施例中，在具有增益介质的光学腔中打开Q开关后，放大相对缓慢地建立，其中通过增益介质的每次往返都增加了光脉冲的幅度。 其他实施例使用准Q开关器件或多个幅度调制器来获得Q-种子脉冲。 这些配置提供具有宽动态范围的光脉冲，其可改善非常高功率的MOPA器件中的脉冲陡峭度，非线性光谱变宽等问题。

    Short pulse laser system
    6.
    发明授权
    Short pulse laser system 失效
    短脉冲激光系统

    公开(公告)号：US6016324A

    公开(公告)日：2000-01-18

    申请号：US58274

    申请日：1998-04-09

    Applicant: Harry Rieger ,  Henry Shields ,  Richard Foster

    Inventor： Harry Rieger ,  Henry Shields ,  Richard Foster

    IPC: H01S3/098 ,  G03F7/20 ,  H01S3/00 ,  H01S3/0941 ,  H01S3/102 ,  H01S3/11 ,  H01S3/117 ,  H01S3/127 ,  H01S3/23 ,  H01S3/10

    CPC classification number: H01S3/117 ,  H01S3/127 ,  H01S3/23 ,  H01S3/235 ,  H01S2301/08 ,  H01S3/005 ,  H01S3/0612 ,  H01S3/07 ,  H01S3/08072 ,  H01S3/094076 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1024 ,  H01S3/1103 ,  H01S3/1109 ,  H01S3/1127 ,  H01S3/115 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/2333 ,  H01S3/2341

    Abstract: A laser system which generates short duration pulses, such as under five nanoseconds at an energy level of up to a few milli-Joules per pulse (mJ/p) with near diffraction limited beam quality. A laser crystal is pumped (excited) by diode lasers. A resonator having at least two mirror surfaces defines a beam path passing through the laser crystal. The beam path in the resonator is periodically blocked by a first optical shutter permitting pump energy to build up in the laser crystal, except for a short period near the end of each pumping period. While the first optical shutter is open a second optical shutter blocks the light in the resonator except for periodic short intervals, the intervals being spaced such that at least one light pulse traveling at the speed of light in the resonator is able to make a plurality of transits through the resonator, increasing in intensity by extracting energy from the excited laser crystal on each transit. After the light pulse has built up in intensity, an optical release mechanism releases the pulse from resonator.

    Abstract translation: 一种产生短持续时间脉冲的激光系统，例如在高达几毫焦耳/脉冲（mJ / p）的能级下，具有接近衍射限制光束质量的五纳秒。 激光晶体被二极管激光器激发（激发）。 具有至少两个镜面的谐振器限定穿过激光晶体的光束路径。 除了在每个泵送周期结束附近的短时间内，谐振器中的光束路径被允许泵浦能量积聚在激光晶体中的第一光学快门周期性地阻挡。 当第一光学快门打开时，除了周期性短的间隔之外，第二光学快门阻挡谐振器中的光，间隔被间隔开，使得在谐振器中以光速行进的至少一个光脉冲能够使多个 通过谐振器过渡，通过在每次运输时从激发的激光晶体中提取能量而增加强度。 在光脉冲强度累积之后，光学释放机构从谐振器释放脉冲。

    Picosecond laser
    7.
    发明授权
    Picosecond laser 失效
    皮秒激光

    公开(公告)号：US5742634A

    公开(公告)日：1998-04-21

    申请号：US725750

    申请日：1996-10-04

    Applicant: Harry Rieger ,  Henry Shields ,  Richard M. Foster

    Inventor： Harry Rieger ,  Henry Shields ,  Richard M. Foster

    IPC: H01S3/127 ,  G03F7/20 ,  H01S3/00 ,  H01S3/0941 ,  H01S3/098 ,  H01S3/102 ,  H01S3/11 ,  H01S3/23 ,  H01S3/10

    CPC classification number: H01S3/2341 ,  H01S3/115 ,  H01S3/117 ,  H01S3/2316 ,  H01S3/2333 ,  H01S3/2383 ,  H01S2301/08 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/082 ,  H01S3/094076 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1024 ,  H01S3/1075 ,  H01S3/1103 ,  H01S3/1109 ,  H01S3/1127 ,  H01S3/127 ,  H01S3/23

    Abstract: A laser system which generates pulses with a duration in the range of about 60 to 300 ps at an energy level of up to a few milli-Joules per pulse (mJ/p) with near diffraction limited beam quality. A laser crystal is pumped (excited) by diode lasers. A resonator having at least two mirror surfaces defines a beam path passing through the laser crystal. The beam path in the resonator is periodically blocked by a first optical shutter permitting pump energy to build up in the laser crystal, except for a short period near the end of each pumping period. While the first optical shutter is open a second optical shutter blocks the light in the resonator except for periodic subnano-second intervals, the intervals being spaced such that at least one light pulse traveling at the speed of light in the resonator is able to make a plurality of transits through the resonator, increasing in intensity by extracting energy from the excited laser crystal on each transit. After the light pulse has built up in intensity, an optical release mechanism releases the pulse from resonator.

    Abstract translation: 一种激光系统，其产生的脉冲持续时间在约60至300ps的范围内，能量水平高达几毫安每脉冲（mJ / p），具有近衍射限制光束质量。 激光晶体被二极管激光器激发（激发）。 具有至少两个镜面的谐振器限定穿过激光晶体的光束路径。 除了在每个泵送周期结束附近的短时间内，谐振器中的光束路径被允许泵浦能量积聚在激光晶体中的第一光学快门周期性地阻挡。 当第一光学快门打开时，第二光学快门阻挡除了周期性亚纳秒级间隔之外的谐振器中的光，间隔被间隔开，使得以共振器中的光速行进的至少一个光脉冲能够形成 通过谐振器的多个过渡，通过在每次运输时从激发的激光晶体提取能量而增加强度。 在光脉冲强度累积之后，光学释放机构从谐振器释放脉冲。

    PULSE SLICER IN LASER SYSTEMS
    9.
    发明申请
    PULSE SLICER IN LASER SYSTEMS 审中-公开

    公开(公告)号：US20190115712A1

    公开(公告)日：2019-04-18

    申请号：US16121284

    申请日：2018-09-04

    Applicant: LUMENIS LTD.

    Inventor： John B. Lee, JR.

    IPC: H01S3/00 ,  H01S3/10 ,  H01S3/23 ,  H01S3/16 ,  H01S3/115 ,  H01S3/092 ,  H01S3/0941 ,  G02B27/28 ,  H01S3/127

    Abstract: An apparatus (such as a laser-based system) and method for providing optical pulses in a broad range of pulse widths and pulse energies uses a pulse slicer which is configured to slice a predefined portion having a desired pulse width of each of the one or more output optical pulses from a laser oscillator, in which timings of a rising edge and a falling edge of each sliced optical pulse relative to a time instance of a maximum of the corresponding each of the one or more output optical pulses from the laser oscillator, are chosen at least to maximize amplification efficiency of the optical amplifier, which may be located after the pulse slicer, and to provide the one or more amplified output optical pulses each having the desired pulse energy and pulse width.

    LASER DEVICE AND PHOTOACOUSTIC MEASUREMENT DEVICE COMPRISING THE SAME
    10.
    发明申请
    LASER DEVICE AND PHOTOACOUSTIC MEASUREMENT DEVICE COMPRISING THE SAME 审中-公开
    激光装置和包含该激光装置的光电测量装置

    公开(公告)号：US20170012403A1

    公开(公告)日：2017-01-12

    申请号：US15275697

    申请日：2016-09-26

    Applicant: FUJIFILM Corporation

    Inventor： Dai MURAKOSHI ,  Kaku IRISAWA ,  Takuji TADA

    IPC: H01S3/127 ,  A61B5/00 ,  H01S3/08 ,  H01S3/16 ,  H01S3/082 ,  H01S3/092

    CPC classification number: H01S3/127 ,  A61B5/0095 ,  H01S3/0809 ,  H01S3/082 ,  H01S3/092 ,  H01S3/106 ,  H01S3/1633

    Abstract: In a laser device and a photoacoustic measurement device including the laser device, the intensity of light at each wavelength made independently controllable. The laser device includes a laser medium which has oscillation wavelengths at a first wavelength and a second wavelength with higher light emission efficiency than at the first wavelength, an excitation section, a first resonator, a second resonator, a Q-value change unit, and a control section. The control section oscillates light having the first wavelength through Q switching when a first delay time has elapsed after the excitation of the laser medium has been started in a case where the oscillation wavelength is the first wavelength, and oscillates light having the second wavelength through Q switching when a second delay time has elapsed after the excitation of the laser medium has been started in a case where the oscillation wavelength is the second wavelength.

    Abstract translation: 在包括激光装置的激光装置和光声测量装置中，每个波长处的光的强度独立地可控制。 激光装置包括激光介质，其具有比第一波长具有更高的发光效率的第一波长和第二波长的振荡波长，激励部，第一谐振器，第二谐振器，Q值改变单元和 控制部分。 当在振荡波长为第一波长的情况下已经开始激光介质的激发之后经过第一延迟时间时，控制部分通过Q切换振荡具有第一波长的光，并且通过Q振荡具有第二波长的光 在振荡波长为第二波长的情况下已经开始激光介质的激励之后经过第二延迟时间的切换。

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