公开(公告)号：US06587487B2

公开(公告)日：2003-07-01

申请号：US09741137

申请日：2000-12-19

Applicant: Yusong Yin

Inventor： Yusong Yin

IPC: H01S3102

CPC classification number: H01S3/109 ,  H01S3/082 ,  H01S3/09415 ,  H01S3/11 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/1653 ,  H01S3/1673

Abstract: Harmonic lasers are provided. A third harmonic laser includes a first high reflector and an output coupler forming a resonator cavity having an optical axis. The resonator cavity includes a laser medium for producing a fundamental beam. Desirably, the laser medium is Nd:YAG, Nd:YLF, Nd:YV04, although other laser mediums are also contemplated such as Ti:sapphire, Nd:YAB and the like. The laser medium can be pumped by any desired source for example laser, laser diode, laser diode bar, fiber coupled laser diode bar or lamp which are well known in the art. The laser medium can be either end pumped or side pumped which are also well known. The first high reflector is reflective of a fundamental beam. A second harmonic generator is located within the cavity formed between the first high reflector and the output coupler for generating a second harmonic beam from the fundamental beam. The output coupler is highly transmissive for second harmonic beam and partially transmissive for a fundamental beam. The fundamental beam and the second harmonic beam exit the output coupler before incidenting on a harmonic generator. The third harmonic generator is positioned external to the resonator cavity and is located along the optical path from the output coupler so that the fundamental and the second harmonic beams incident on the third harmonic generator where portions of the second and the fundamental are converted to third harmonic beam.

Abstract translation: 提供谐波激光器。 三次谐波激光器包括形成具有光轴的谐振腔的第一高反射器和输出耦合器。 谐振腔包括用于产生基波束的激光介质。 理想地，激光介质是Nd：YAG，Nd：YLF，Nd：YV04，尽管也可以考虑其它激光介质，例如Ti：蓝宝石，Nd：YAB等。 激光介质可以由本领域公知的任何所需的源例如激光，激光二极管，激光二极管棒，光纤耦合的激光二极管棒或灯来泵浦。 激光介质可以是端泵还是泵侧泵，也是众所周知的。 第一个高反射器反射基波束。 二次谐波发生器位于形成在第一高反射器和输出耦合器之间的腔内，用于从基波束产生二次谐波束。 输出耦合器对于二次谐波束是高度透射的，对于基波束是部分透射的。 在入射到谐波发生器之前，基波束和二次谐波波束离开输出耦合器。 三次谐波发生器位于谐振器腔的外部，并且沿着来自输出耦合器的光路定位，使得入射到三次谐波发生器上的基波和二次谐波入射，其中第二和基波的部分被转换为三次谐波 光束。

公开(公告)号：US5898717A

公开(公告)日：1999-04-27

申请号：US788772

申请日：1997-01-24

Applicant: Yusong Yin

Inventor： Yusong Yin

IPC: G02F1/35 ,  H01S3/109 ,  H05K3/00 ,  H01S3/10

CPC classification number: H01S3/109 ,  G02F2001/354 ,  H05K3/0017

Abstract: Third harmonic generated from intra-cavity frequency tripled resonator is disclosed in which type II phase matching crystal is used as the tripler. Type I phase matching is used for second harmonic generation. The resonator efficiently converts the fundamental laser frequency to its third harmonic laser beam. The laser is highly efficient with high third harmonic output stability. Overall conversion efficiency exceeds 25% and preferably is 50% or higher.

Abstract translation: 公开了从腔内频率三倍频谐振器产生的三次谐波，其中使用II型相位匹配晶体作为三倍频。 I型相位匹配用于二次谐波生成。 谐振器有效地将基本激光频率转换成其三次谐波激光束。 激光器高效率，高三次谐波输出稳定性。 总转换效率超过25％，优选为50％以上。

公开(公告)号：US07082149B1

公开(公告)日：2006-07-25

申请号：US10603264

申请日：2003-06-24

Applicant: Yusong Yin ,  Shane Shizhou Zhang

Inventor： Yusong Yin ,  Shane Shizhou Zhang

IPC: H01S3/91 ,  H01S3/94

CPC classification number: H01S3/0941 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/061 ,  H01S3/07 ,  H01S3/09408 ,  H01S3/094084 ,  H01S3/109 ,  H01S3/1611 ,  H01S3/1653 ,  H01S5/4018

Abstract: A high pulse energy, side pumped laser is provided. The laser has an optical cavity formed between a first and a second reflective surface. A lasing medium is located within the cavity along its optical axis. A plurality of diode bars are provided in optical communication with the lasing medium preferably a lasing rod. The diode bars supply electromagnetic radiation to the lasing rod. The diode bars are configured about the lasing rod so that electromagnetic radiation from the diodes bars propagates through the lasing rod on a plurality of substantially nonintersecting paths. Since the lasing rod is side pumped, the substantially nonintersecting paths traverse the lasing rod substantially perpendicular to the direction of propagation of energy in the laser cavity.

Abstract translation: 提供了高脉冲能量，侧泵浦激光器。 激光器具有形成在第一和第二反射表面之间的光学腔。 激光介质沿其光轴位于腔内。 提供与激光介质光学连通的多个二极管条，优选为激光棒。 二极管棒向激光棒提供电磁辐射。 二极管条被围绕激光棒配置，使得来自二极管棒的电磁辐射在多个基本上非接触的路径上传播穿过激光棒。 由于激光棒是侧面抽吸的，所以基本上非接触的路径横穿激光棒，其基本上垂直于激光腔中能量的传播方向。

公开(公告)号：US06980574B1

公开(公告)日：2005-12-27

申请号：US10623086

申请日：2003-07-18

Applicant: Yusong Yin ,  Samuil Karlsbrun

Inventor： Yusong Yin ,  Samuil Karlsbrun

IPC: H01S3/10 ,  H01S3/109 ,  H01S3/127

CPC classification number: H01S3/127 ,  H01S3/109

Abstract: According to the invention, a laser and a method of operating a laser which can produce multiple pulses from a single laser head is provided. A lasing medium is pumped by pumping source such as laser diodes, lamp and such. A modulator located in the cavity is turned on to induce a loss in the laser cavity sufficient to prevent lasing. A first predetermined amount of energy is stored in the lasing medium while the modulator is turned on due to a creation of a population inversion in the lasing medium in excess of the lasing threshold. The modulator is then turned off for a period of time to allow the lasing medium to provide a first pulse. The modulator is then turned on before the population inversion in the laser medium is depleted completely so that a predetermined amount of energy remains stored in the lasing medium. After the first pulse, the modulator again induces a loss in the cavity sufficient to prevent lasing. The modulator is maintained in the on position for a period of time to increase the amount of energy stored in the lasing medium. The modulator is then turned off for a third period of time to allow the lasing medium to produce a second pulse having a second controlled amount of pulse energy.

Abstract translation: 根据本发明，提供了可以从单个激光头产生多个脉冲的激光器和操作激光器的方法。 激光介质通过诸如激光二极管，灯等的泵浦源泵送。 位于空腔中的调制器导通，以致激光腔中的损耗足以防止激光发射。 由于在激光介质中产生超过激光阈值的总体反转，所以在激光介质中存储第一预定量的能量，同时调制器接通。 然后关闭调制器一段时间，以允许激光介质提供第一脉冲。 然后在激光介质中的群体反转完全耗尽之前，调制器被打开，使得预定量的能量保持存储在激光介质中。 在第一脉冲之后，调制器再次引起腔中的损耗，足以防止激光发射。 调制器保持在接通位置一段时间以增加存储在激光介质中的能量的量。 然后将调制器关闭第三时间段，以允许激光介质产生具有第二受控量脉冲能量的第二脉冲。

公开(公告)号：US06961355B1

公开(公告)日：2005-11-01

申请号：US10339241

申请日：2003-01-09

Applicant: Yusong Yin ,  Xiaojie Zhao ,  Jing Zhao ,  Samuil Karlsbrun

Inventor： Yusong Yin ,  Xiaojie Zhao ,  Jing Zhao ,  Samuil Karlsbrun

IPC: H01S3/10 ,  H01S3/106 ,  H01S3/107 ,  H01S3/109 ,  H01S3/11 ,  H01S3/16

CPC classification number: H01S3/117 ,  H01S3/0815 ,  H01S3/10038 ,  H01S3/107 ,  H01S3/109 ,  H01S3/115 ,  H01S3/1611

Abstract: Lasers are provided to deliver a wide variety of wavelengths at variable pulse energy. A laser cavity is formed between a first and second reflective surface. A lasing medium is located within cavity which lases at a preselected fundamental frequency. One or more nonlinear crystals are provided in optical communication with the lasing crystal to produce a secondary beam having a different frequency than the fundamental beam. A modulator is provided to control the pulse energy of the secondary beam. Desirably the secondary beam is a harmonic beam for example a second, third, fourth or fifth harmonic beam or a beam provided by an optical parametric oscillator.

Abstract translation: 提供激光以在可变的脉冲能量下提供多种波长。 在第一和第二反射表面之间形成激光腔。 激光介质位于腔内，以预选的基频发光。 提供与激光晶体光学通信的一个或多个非线性晶体，以产生具有与基波束不同的频率的次波束。 提供调制器来控制次级束的脉冲能量。 期望的次级光束是例如第二，第三，第四或第五谐波光束或由光参量振荡器提供的光束的谐波束。

公开(公告)号：US06842293B1

公开(公告)日：2005-01-11

申请号：US10122060

申请日：2002-04-13

Applicant: Yusong Yin ,  Xiaojie Zhao ,  Jing Zhao

Inventor： Yusong Yin ,  Xiaojie Zhao ,  Jing Zhao

IPC: G02B27/30

CPC classification number: G02B27/30

Abstract: A laser beam includes a concave or convex mirror which is reflective for wavelength of the high intensity beam. The reflective mirror is located along a preselected path of a high intensity laser beam so that the high intensity laser beam intersects the mirror at a first position. A beam collimator is located in the path of the high intensity beam reflected by the concave or convex mirror. The concave or convex mirror is movably mounted desirably rotatably mounted in the path of the high intensity beam. Desirably the mirror is rotated about a preselected axis. Desirably, the axis is selected so that when the mirror is rotated to a new position, the high intensity beam will be reflected along the same path to the collimator as it was prior to any rotation.

Abstract translation: 激光束包括对于高强度波束的波长反射的凹面或凸面镜。 反射镜沿着高强度激光束的预选路径定位，使得高强度激光束在第一位置处与反射镜相交。 光束准直仪位于由凹凸镜反射的高强度光束的路径中。 凹凸镜可移动地安装在高强度光束的路径中可旋转地安装。 理想地，反射镜围绕预选轴线旋转。 理想地，选择轴使得当镜子旋转到新位置时，高强度光束将沿着与在任何旋转之前的准直器相同的路径被反射。

公开(公告)号：US06584134B2

公开(公告)日：2003-06-24

申请号：US10026510

申请日：2001-12-19

Applicant: Yusong Yin ,  Peili Chen ,  Dmitry Donskoy

Inventor： Yusong Yin ,  Peili Chen ,  Dmitry Donskoy

IPC: H01S308

CPC classification number: H01S3/08045 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/061 ,  H01S3/0612 ,  H01S3/08054 ,  H01S3/0816 ,  H01S3/09415 ,  H01S3/1083 ,  H01S3/117

Abstract: According to the invention, a high power diode pumped solid state laser is provided. The laser includes a first and second reflective surfaces which form an optical resonator cavity. A laser medium, particularly a Nd doped laser medium for example: a Nd:YAG, a Nd:YLF, or a Nd:YVO4 crystal is provided within the laser cavity. A fundamental frequency laser beam propagates from the front and back ends of the laser medium. The first reflective surface is highly reflective for fundamental beam. The second reflective surface is at least partially reflective for fundamental beam. The laser medium is end pumped by at least one diode pumping apparatus for example, a laser diode, or diode array, or fiber coupled laser diodes, whose wavelength matches at least one laser medium absorption band. The diode pumping apparatus is located adjacent either the front end or the back end of the laser medium, or both. The optical resonator cavity is configured to provide a laser beam diameter in the laser medium from about 0.8 mm to 2 mm in diameter for the fundamental beam. Desirably, the laser medium has a diameter of about 1.6 to 5 times the fundamental beam diameter in the laser medium. A cooling jacket is desirably provided surrounding the laser medium so that the laser medium is directly liquid cooled. Desirably, the resonator cavity is also configured so that the fundamental beam is operated at TEM00 mode. Preferably, a polarization discriminator for example, a polarizer or one or more Brewster plate is located within the resonator cavity to discriminate one polarization over the other in favor of a particular polarization.

公开(公告)号：US06356578B1

公开(公告)日：2002-03-12

申请号：US09474589

申请日：1999-12-29

Applicant: Yusong Yin

Inventor： Yusong Yin

IPC: H01S308

CPC classification number: G02B5/3066 ,  G02B27/281 ,  H01S3/005

Abstract: According to the invention, a variable power laser beam delivery apparatus is provided. The apparatus includes a generator for delivering a preselected wavelength beam preferably an ultraviolet (UV) beam along a beam path. A dichroic mirror, desirably two (2) or more preferably four (4) dichroic mirrors, for transmitting the preselected UV wavelength beam at P-polarization and for highly reflecting the preselected UV wavelength beam at S-polarization are located along the preselected wavelength beam path delivered from the laser beam generator. A beam polarization rotator is mounted along the beam path of the laser beam provided from the laser beam generator. The beam polarization rotator is located between the laser beam generator and the dichroic mirror along the laser beam path. A beam output is provided by directing the beam transmitted by the dichroic mirror or reflected by the dichroic mirror to a preselected location as the output of the device. Alternatively when two beam outputs are desired, both the reflected and the transmitted beam can be used as laser beam outputs.

Abstract translation: 根据本发明，提供了一种可变功率激光束输送装置。 该装置包括用于沿光束路径传送预选波长光束，优选地输送紫外（UV）光束的发生器。 用于以P偏振传输预选的UV波长光束并且用于在S偏振处高度反射预选的UV波长光束的分色镜，期望为二（2）或更优选四（4）分色镜位于预选波长光束 从激光束发生器传送的路径。 沿着从激光束发生器提供的激光束的光束路径安装光束偏振旋转器。 光束偏振旋转器沿着激光束路径位于激光束发生器和分色镜之间。 通过将由分色镜传输的光束或由分色镜反射的光束引导到设备的输出端的预选位置来提供光束输出。 或者，当需要两个光束输出时，反射光束和透射光束都可以用作激光束输出。

公开(公告)号：US08817831B1

公开(公告)日：2014-08-26

申请号：US13815098

申请日：2013-01-30

Applicant: Matthew Terraciano ,  Yusong Yin ,  Andrea Burzo

Inventor： Matthew Terraciano ,  Yusong Yin ,  Andrea Burzo

IPC: H01S3/10

CPC classification number: H01S3/0092 ,  G02F1/3501 ,  G02F2001/3507 ,  H01S3/0071 ,  H01S3/027 ,  H01S3/1643 ,  H01S3/1673

Abstract: A method and apparatus for spatially separating beams with different wavelengths is presented. The system includes: a light source (i.e. a laser with multiple harmonic output beams) with multiple wavelengths emitted along a single beam path or very nearly collinear beam paths, a path which connects the light source to a wavelength dependent beam separator, and a second path for blocking unwanted output wavelengths which connects the beam separation region to the laser output.

Abstract translation: 提出了用于空间分离具有不同波长的波束的方法和装置。 该系统包括：具有沿着单个光束路径或非常接近共线的光束路径发射的多个波长的光源（即具有多个谐波输出光束的激光器），将光源连接到与波长相关的光束分离器的路径，以及第二 阻止不必要的输出波长的路径，将波束分离区域连接到激光输出端。

公开(公告)号：US07079557B1

公开(公告)日：2006-07-18

申请号：US10677826

申请日：2003-10-02

Applicant: Yusong Yin ,  Nan Yin ,  Frank F. Wu

Inventor： Yusong Yin ,  Nan Yin ,  Frank F. Wu

IPC: H01S3/10

CPC classification number: H01S3/1083 ,  H01S3/08086 ,  H01S3/09415 ,  H01S3/109 ,  H01S3/11 ,  H01S3/113 ,  H01S3/1611 ,  H01S3/1653

Abstract: A laser having an optical parametric oscillator for providing a preselected wavelength beam is provided. A nonlinear crystal cut for phase matching condition preferably cut for noncritical phase matching conditions for the fundamental beam wavelength and the preselected wavelength beam is located in both the optical parametric oscillator cavity and laser resonator cavity.The optical axis of the laser resonator and the optical axis of the optical parametric oscillator cavity are at least partially separate and partially overlap. The laser crystal is located in the laser resonator cavity but not in the optical parametric oscillator cavity. Each end of the OPO nonlinear crystal that intersects the optical axes has a Brewster cut for both the fundamental and preselected wavelength beams so that the fundamental and preselected wavelength beams incident on the nonlinear crystal at approximately the Brewster angle and pass through without substantial reflection loss.The fundamental wavelength beam is directed into the optical parametric oscillator cavity and incidents on nonlinear crystal having a Brewster cut at each end for fundamental and preselected wavelength beam without substantial reflection loss. A portion of the fundamental wavelength beam is partially converted to a preselected wavelength beam. The fundamental beam and the preselected wavelength beams are reflected back through the nonlinear crystal. Preselected wavelength beam is separated from the fundamental wavelength beam.

Abstract translation: 提供具有用于提供预选波长光束的光学参量振荡器的激光器。 针对基波束波长和预选波长光束的非临界相位匹配条件优选地切割用于相位匹配条件的非线性晶体切割位于光学参量振荡器腔和激光谐振腔中。 激光谐振器的光轴和光参量振荡器腔的光轴至少部分分开并部分重叠。 激光晶体位于激光谐振腔中，但不在光参量振荡器腔中。 与光轴相交的OPO非线性晶体的每个端部都具有基波和预选波长光束的布鲁斯特切割，使得基波和预选波长光束以大约布鲁斯特角入射到非线性晶体上并通过而没有实质的反射损耗。 基本波长光束被引导到光参量振荡器腔中，并且在具有布鲁斯特的非线性晶体上的事件在每个端部切割用于基波和预选波长波束而没有实质的反射损耗。 基波长光束的一部分被部分地转换成预选的波长光束。 基波束和预选波长光束通过非线性晶体反射回来。 预选波长光束与基波长光束分离。