公开(公告)号：US10164401B1

公开(公告)日：2018-12-25

申请号：US15865782

申请日：2018-01-09

申请人： Shanxi University

发明人： Kuanshou Zhang ,  Xin Zhao ,  Yuanji Li ,  Jinxia Feng

IPC分类号： H01S3/115 ,  H01S3/0941 ,  H01S3/107

摘要： A method is disclosed for generating a sub-nanosecond pulse laser, using a voltage-increased type electro-optical Q-switched laser. The method includes: applying a square wave driving signal on a Pockels cell in an electro-optical Q-switched laser by using a Q-switch driver module, where the peak voltage of the square wave driving signal is higher than the quarter-wave voltage of the Pockels cell; and performing, by controlling the loss related to the electro-optical Q switch with a voltage of the driving signal increasing from 0 to the peak voltage, a change of the working state of the electro-optical Q switch from a switched-off state to a switched-on state, and then to a partially-switched-on state. The intracavity laser is exhausted within a quite short time, so that the pulse width of the laser is shortened, to implement sub-nanosecond operation of a pulse laser.

公开(公告)号：US20170279241A1

公开(公告)日：2017-09-28

申请号：US15616163

申请日：2017-06-07

申请人： GIGAPHOTON INC.

发明人： Takashi ONOSE ,  Osamu WAKABAYASHI

IPC分类号： H01S3/091 ,  H01S3/0941 ,  H01S3/094 ,  G02F1/355 ,  H01S3/06 ,  H01S3/16 ,  H01S3/107 ,  G02F1/37 ,  H01S3/067 ,  H01S3/109

CPC分类号： H01S3/0912 ,  G02F1/3534 ,  G02F1/3551 ,  G02F1/37 ,  G02F2001/3507 ,  G02F2001/354 ,  G03F7/70025 ,  H01S3/0071 ,  H01S3/0085 ,  H01S3/0092 ,  H01S3/0602 ,  H01S3/06754 ,  H01S3/094076 ,  H01S3/0941 ,  H01S3/10046 ,  H01S3/10053 ,  H01S3/107 ,  H01S3/109 ,  H01S3/1666 ,  H01S3/2251 ,  H01S3/2366 ,  H01S3/2375 ,  H01S3/2391

摘要： A solid-state laser system may include first and second solid-state laser units, a wavelength conversion system, an optical shutter, and a controller. The first solid-state laser unit and the second solid-state laser unit may output first pulsed laser light with a first wavelength and second pulsed laser light with a second wavelength, respectively. The controller may perform first control and second control. The first control may cause the first and second pulsed laser light to enter the wavelength conversion system at a substantially coincidental timing, thereby causing the wavelength conversion system to output third pulsed laser light with a third wavelength converted from the first wavelength and the second wavelength, and the second control may prevent the first and second pulsed laser light from entering the wavelength conversion system at the coincidental timing, thereby preventing the wavelength conversion system from outputting the third pulsed laser light.

公开(公告)号：US09570882B2

公开(公告)日：2017-02-14

申请号：US13851275

申请日：2013-03-27

申请人： Coherent GmbH

发明人： Stefan Spiekermann

IPC分类号： H01S3/23 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/102 ,  H01S3/113 ,  H01S3/16 ,  H01S3/107 ,  H01S3/11 ,  H01S3/094 ,  H01S3/00

CPC分类号： H01S3/2308 ,  H01S3/005 ,  H01S3/0078 ,  H01S3/094038 ,  H01S3/094076 ,  H01S3/09415 ,  H01S3/10046 ,  H01S3/10084 ,  H01S3/1022 ,  H01S3/107 ,  H01S3/11 ,  H01S3/113 ,  H01S3/1611 ,  H01S3/1673 ,  H01S2301/02

摘要： In a master oscillator plus power amplifier (MOPA) system, the oscillator is a passively Q-switched laser. The laser is triggered into passively Q-switched operation by operating an optical switch to resonantly couple back into the laser amplified stimulated emission generated by the amplifier.

摘要翻译： 在主振荡器和功率放大器（MOPA）系统中，振荡器是被动Q开关激光器。 通过操作光开关将激光器触发成被动Q开关操作，以共振地耦合到由放大器产生的激光放大的受激发射。

公开(公告)号：US09531151B2

公开(公告)日：2016-12-27

申请号：US14931540

申请日：2015-11-03

申请人： High Q Laser GmbH

发明人： Dominik Fuchs ,  Michael Schmidt ,  Hubert Adamietz ,  Juerg Aus Der Au

IPC分类号： H01S3/107 ,  H01S3/10 ,  H01S3/23 ,  H01S3/08

CPC分类号： H01S3/107 ,  H01S3/08054 ,  H01S3/10007 ,  H01S3/10061 ,  H01S3/235

摘要： Method for generating a series of laser pulses with a laser assembly, the laser assembly at least having two reflecting members, a laser medium and an electro-optical modulator are disclosed. The laser assembly operates in a light amplifying mode and runs a pulse extraction sequence. The pulse extraction sequence is run by applying a defined voltage change with reference to the amplification voltage, wherein changing of the voltage is adjusted such that at least one intermediate switching state is generated on side of the electro-optical modulator, the intermediate switching state providing a particular change of polarization of the amplified laser radiation by the electro-optical modulator, such that a final switching state is generated on side of the electro-optical modulator by applying a final extraction voltage at the end of the time period.

摘要翻译： 公开了一种用激光组件产生一系列激光脉冲的方法，激光组件至少具有两个反射部件，激光介质和电光调制器。 激光组件以光放大模式工作并运行脉冲提取序列。 通过参照放大电压施加限定的电压变化来运行脉冲提取序列，其中调整电压的变化，使得在电光调制器的一侧产生至少一个中间开关状态，提供中间开关状态 通过电光调制器的放大的激光辐射的特定的偏振变化，使得通过在时间段结束时施加最终提取电压在电光调制器的一侧产生最终的开关状态。

公开(公告)号：US09436022B2

公开(公告)日：2016-09-06

申请号：US14730471

申请日：2015-06-04

申请人： FUJITSU LIMITED

发明人： Tomoyuki Akiyama

IPC分类号： H01S3/063 ,  H01S5/14 ,  G02F1/025 ,  H01S3/107 ,  H01S5/0687 ,  H01S3/082 ,  H01S3/106 ,  H01S3/108 ,  H01S5/024 ,  H01S5/40

CPC分类号： G02F1/025 ,  G02F2201/58 ,  G02F2203/055 ,  H01S3/0826 ,  H01S3/106 ,  H01S3/107 ,  H01S3/108 ,  H01S5/02446 ,  H01S5/0687 ,  H01S5/142 ,  H01S5/4062 ,  H01S5/4068 ,  H01S5/4087

摘要： A modulated light source includes: a reflective film which is formed at one end of an optical amplifier; a light wavelength filter which has band-pass characteristics and modulates a transmission center wavelength; a light reflection mechanism which feeds back light having passed through the light wavelength filter to the optical amplifier and an optical resonator is formed between which and the reflective film; and a wavelength adjustment mechanism which adjusts the transmission center wavelength to coincide with a specific oscillation wavelength when light oscillation selectively occurs at the specific oscillation wavelength depending on the band-pass characteristics of the light wavelength filter.

摘要翻译： 调制光源包括：反射膜，其形成在光放大器的一端; 具有带通特性并调制透射中心波长的光波长滤波器; 将通过光波长滤波器的光反馈到光放大器的光反射机构和形成在该反射膜之间的光谐振器; 以及波长调节机构，其根据光波长滤波器的带通特性，在特定的振荡波长选择性地发生光振荡时，调整透射中心波长与特定的振荡波长一致。

公开(公告)号：US09312657B1

公开(公告)日：2016-04-12

申请号：US14558549

申请日：2014-12-02

申请人： Coherent LaserSystems GmbH & Co. KG

发明人： Rüdiger Von Elm ,  Wolf Seelert

IPC分类号： H01S3/08 ,  H01S3/115 ,  H01S3/06 ,  H01S3/10 ,  H01S3/16 ,  H01S3/0941 ,  H01S3/081 ,  H01S3/107 ,  H01S3/11

CPC分类号： H01S3/115 ,  H01S3/0606 ,  H01S3/0621 ,  H01S3/0623 ,  H01S3/08054 ,  H01S3/0815 ,  H01S3/09415 ,  H01S3/1075 ,  H01S3/1103 ,  H01S3/1611 ,  H01S3/1673

摘要： A Q-switched solid-state laser has a neodymium-doped yttrium vanadate single-crystal gain-element in the form of a prism. The prism incorporates the functions of a gain-element, a polarizer, a resonator end-mirror and an output coupler.

摘要翻译： Q开关固态激光器具有钕掺杂的钒酸钇单晶增益元件，其形式为棱镜。 棱镜包括增益元件，偏振器，谐振器端镜和输出耦合器的功能。

公开(公告)号：US09153928B2

公开(公告)日：2015-10-06

申请号：US12895127

申请日：2010-09-30

申请人： Martin Fermann ,  Ingmar Hartl ,  Axel Ruehl

发明人： Martin Fermann ,  Ingmar Hartl ,  Axel Ruehl

IPC分类号： H01S3/067 ,  G01J3/45 ,  G01N21/31 ,  G01N21/3581 ,  G01N21/47 ,  G01N21/63 ,  G01N21/65 ,  H01S3/11 ,  G01N21/35 ,  H01S3/105 ,  H01S3/106 ,  H01S3/107

CPC分类号： H01S3/1106 ,  G01J3/10 ,  G01J3/45 ,  G01J2003/102 ,  G01N21/31 ,  G01N21/3581 ,  G01N21/4795 ,  G01N21/636 ,  G01N21/65 ,  G01N2021/3595 ,  H01S3/067 ,  H01S3/105 ,  H01S3/1068 ,  H01S3/107 ,  H01S3/1115

摘要： The invention relates to scanning pulsed laser systems for optical imaging. Coherent dual scanning laser systems (CDSL) are disclosed and some applications thereof. Various alternatives for implementation are illustrated. In at least one embodiment a coherent dual scanning laser system (CDSL) includes two passively modelocked fiber oscillators. In some embodiments an effective CDSL is constructed with only one laser. At least one embodiment includes a coherent scanning laser system (CSL) for generating pulse pairs with a time varying time delay. A CDSL, effective CDSL, or CSL may be arranged in an imaging system for one or more of optical imaging, microscopy, micro-spectroscopy and/or THz imaging.

摘要翻译： 本发明涉及用于光学成像的扫描脉冲激光系统。 公开了相干双扫描激光系统（CDSL）及其一些应用。 示出了用于实现的各种替代方案。 在至少一个实施例中，相干双扫描激光系统（CDSL）包括两个被动锁模光纤振荡器。 在一些实施例中，仅使用一个激光器构造有效的CDSL。 至少一个实施例包括用于产生具有时变时间延迟的脉冲对的相干扫描激光系统（CSL）。 用于光学成像，显微镜，微光谱和/或THz成像中的一种或多种的CDSL，有效的CDSL或CSL可以被布置在成像系统中。

公开(公告)号：US09025625B2

公开(公告)日：2015-05-05

申请号：US14266847

申请日：2014-05-01

申请人： Fotona d.d.

发明人： Dejan Skrabelj ,  Marko Marincek

IPC分类号： H01S3/11 ,  H01S3/115 ,  H01S3/107 ,  H01S3/092 ,  H01S3/16 ,  H01S3/00

CPC分类号： H01S3/115 ,  G02F1/0327 ,  H01S3/0092 ,  H01S3/092 ,  H01S3/10038 ,  H01S3/107 ,  H01S3/1611 ,  H01S3/1643 ,  H01S2301/02

摘要： In a method for operating a laser system in a Q-switched mode, the laser system provided with a laser resonator with a laser medium and an electro-optical modulator, wherein the electro-optical modulator has an EOM crystal, wherein the EOM crystal has a characteristic ringing time (t0) when subjected to acoustic ringing, the EOM crystal is driven by modulator voltage pulses (pm) having a modulator voltage pulse duration (tml). A train of at least two subsequent laser pulses (pl) is generated. The modulator voltage pulse duration (tml) is selected to be at least approximately equal to the characteristic ringing time (t0) of the EOM crystal multiplied by an integer factor.

摘要翻译： 在用于以Q开关模式操作激光系统的方法中，激光系统具有激光介质和电光调制器，其中电光调制器具有EOM晶体，其中EOM晶体具有 当受到声响时，特征振铃时间（t0），EOM晶体由具有调制器电压脉冲持续时间（tml）的调制器电压脉冲（pm）驱动。 产生至少两个后续激光脉冲（pl）的列。 调制器电压脉冲持续时间（tml）被选择为至少近似等于EOM晶体的特征振荡时间（t0）乘以整数因子。

公开(公告)号：US20050211748A1

公开(公告)日：2005-09-29

申请号：US11120091

申请日：2005-05-02

申请人： Yosuke Mizuyama ,  Yosuke Toyofuku ,  Xinbing Liu ,  Chen-Hsiung Cheng

发明人： Yosuke Mizuyama ,  Yosuke Toyofuku ,  Xinbing Liu ,  Chen-Hsiung Cheng

IPC分类号： B23K26/00 ,  B23K26/06 ,  B23K26/38 ,  B41J2/16 ,  H01S3/107 ,  H01S3/098

CPC分类号： B41J2/1634 ,  B23K26/064 ,  B23K26/0643 ,  B23K26/0648 ,  B41J2/162

摘要： A laser processing apparatus includes a laser generation apparatus for outputting an ultra-short pulse laser beam, a laser control apparatus for controlling the laser generation apparatus, an optical system, an optical system control apparatus for measuring the optical system, and a measurement apparatus for measuring the ultra-short pulse laser beam. The intensity of the largest noise component pulse in the ultra-short pulse laser beam is controlled to be 2.5% or less of the intensity of the primary pulse in the ultra-short pulse laser beam.

摘要翻译： 一种激光加工装置，包括用于输出超短脉冲激光束的激光产生装置，用于控制激光产生装置的激光控制装置，光学系统，用于测量光学系统的光学系统控制装置，以及用于 测量超短脉冲激光束。 超短脉冲激光束中的最大噪声分量脉冲的强度被控制在超短脉冲激光束的初级脉冲强度的2.5％以下。

公开(公告)号：US06928090B1

公开(公告)日：2005-08-09

申请号：US10009337

申请日：2000-05-03

申请人： André Peremans ,  Alaa Addin Mani ,  Paul Thiry

发明人： André Peremans ,  Alaa Addin Mani ,  Paul Thiry

IPC分类号： H01S3/098 ,  H01S3/107 ,  H01S3/108 ,  H01S3/109 ,  H01S3/10

CPC分类号： H01S3/1112 ,  H01S3/109

摘要： The invention relates to a device for a laser blocked-mode, especially for a pulsed laser, comprising a cavity resonator (20) which is defined by a first mirror (1) and a second mirror (8), and fitted with an amplifying active laser medium (5) for the amplification of a beam of laser radiation of a fundamental frequency (ω1) and a solid, non-linear optic means (10) comprising at least said second mirror (8) for reversible conversion of the radiation of the fundamental frequency (ω1) into radiation of a harmonic frequency (ω2) whereby said non-linear optic means (10) has a reflection factor which increases with the intensity of the radiation of a fundamental frequency. The invention is characterized in that said device also comprises a solid intensity limiter (4) in the cavity resonator (20), whereby the transmission factor of the laser radiation decreases with the intensity of said radiation. The invention also relates to a method for a laser blocked-mode, especially for a pulsed laser, using said device.

摘要翻译： 本发明涉及一种用于激光阻挡模式的装置，特别是用于脉冲激光器的装置，包括由第一反射镜（1）和第二反射镜（8）限定的空腔谐振器（20），并配有放大器 激光介质（5），用于放大基频（ω）的激光束辐射，以及包括至少所述第二反射镜（8）的固体非线性光学装置（10），用于可逆地转换 基本频率（ω-1）转换成谐波频率（ω2）的辐射，由此所述非线性光学装置（10）具有随着基本频率的辐射强度而增加的反射系数。 本发明的特征在于，所述装置还包括空腔谐振器（20）中的固体强度限制器（4），由此激光辐射的透射系数随着所述辐射的强度而降低。 本发明还涉及使用所述装置的激光阻挡模式的方法，特别是用于脉冲激光的方法。