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    Method and apparatus for laser surgery of the cornea
    41.
    发明申请
    Method and apparatus for laser surgery of the cornea 失效
    角膜激光手术的方法和装置

    公开(公告)号：US20040199150A1

    公开(公告)日：2004-10-07

    申请号：US10801891

    申请日：2004-03-15

    Inventor： Shui T. Lai

    IPC: A61B018/20

    CPC classification number: B23K26/0665 ,  A61B2017/00694 ,  A61F9/00804 ,  A61F9/00814 ,  A61F2009/00846 ,  A61F2009/00872 ,  A61F2009/00897 ,  B23K26/0096 ,  B23K26/03 ,  B23K26/032 ,  B23K26/04 ,  B23K26/043 ,  B23K26/06 ,  B23K26/0624 ,  B23K26/0648 ,  B23K26/0652 ,  B23K26/704 ,  G02B26/10 ,  G02F1/37 ,  H01S3/005 ,  H01S3/06 ,  H01S3/101 ,  H01S3/235

    Abstract: A laser-based method and apparatus for corneal surgery. The present invention is intended to be applied primarily to ablate organic materials, and human cornea in particular. The invention uses a laser source which has the characteristics of providing a shallow ablation depth (0.2 microns or less per laser pulse), and a low ablation energy density threshold (less than or equal to about 10 mJ/cm2), to achieve optically smooth ablated corneal surfaces. The preferred laser includes a laser emitting approximately 100-50,000 laser pulses per second, with a wavelength of about 198-300 nm and a pulse duration of about 1-5,000 picoseconds. Each laser pulse is directed by a highly controllable laser scanning system. Described is a method of distributing laser pulses and the energy deposited on a target surface such that surface roughness is controlled within a specific range. Included is a laser beam intensity monitor and a beam intensity adjustment means, such that constant energy level is maintained throughout an operation. Eye movement during an operation is corrected for by a corresponding compensation in the location of the surgical beam. Beam operation is terminated if the laser parameters or the eye positioning is outside of a predetermined tolerable range. The surgical system can be used to perform surgical procedures including removal of corneal scar, making incisions, cornea transplants, and to correct myopia, hyperopia, astigmatism, and other corneal surface profile defects.

    Abstract translation: 一种基于激光的角膜手术方法和装置。 本发明旨在主要用于消融有机材料，特别是人角膜。 本发明使用具有提供浅消融深度（每个激光脉冲0.2微米或更小）和低消融能量密度阈值（小于或等于约10mJ / cm 2）的特征的激光源， 实现光学平滑的消融角膜表面。 优选的激光器包括每秒发射大约100-50,000激光脉冲的激光器，波长约为198-300nm，脉冲持续时间约为1-5,000皮​​秒。 每个激光脉冲由高度可控的激光扫描系统引导。 描述了分配激光脉冲和沉积在目标表面上的能量的方法，使得表面粗糙度被控制在特定范围内。 包括激光束强度监视器和光束强度调节装置，使得在整个操作中保持恒定的能量水平。 通过对外科手术束的位置进行相应的补偿来校正手术期间的眼睛运动。 如果激光参数或眼睛定位超出预定的可容许范围，则光束操作终止。 手术系统可用于执行外科手术，包括去除角膜瘢痕，制作切口，角膜移植物，并矫正近视，远视，散光和其他角膜表面轮廓缺陷。

    Laser resonator and adjustment method
    42.
    发明申请
    Laser resonator and adjustment method 失效
    激光谐振器和调节方法

    公开(公告)号：US20040066828A1

    公开(公告)日：2004-04-08

    申请号：US10619303

    申请日：2003-07-14

    Applicant: Cyber Laser Inc.

    Inventor： Yusuke Tamaki ,  Hitoshi Sekita ,  Kazuya Takasago ,  Taisuke Miura

    IPC: H01S003/08

    CPC classification number: H01S3/235 ,  H01S3/08 ,  H01S3/08072 ,  H01S3/106

    Abstract: The present invention has the object of offering a laser resonator capable of maintaining high amplification efficiency even if the thermal lensing effect occurring in the laser medium varies during operation or over repeated operation and suspension of the laser device. The laser resonator comprises at least a pair of reflection portions (planar reflective mirrors 3) provided such as to allow a laser beam to oscillate therebetween; a laser medium provided on the optical path of the laser between the pair of reflection portions; an excitation portion (excitation laser device 5) for exciting the laser medium; an optical system (convex lens 1) provided on the optical path of the laser beam between the laser medium and the pair of reflection portions for changing the state of the laser in the laser medium; and a movement portion for moving the optical system along the optical axis of the laser.

    Abstract translation: 本发明的目的是提供一种激光谐振器，即使在激光介质中发生的热透镜效应在操作期间或者在激光装置的重复操作和暂停时都会发生变化时，其能够保持高的放大效率。 激光谐振器包括至少一对反射部分（平面反射镜3），其被设置为允许激光束在它们之间振荡; 设置在所述一对反射部之间的所述激光的光路上的激光介质; 用于激发激光介质的激励部分（激发激光装置5） 在激光介质和一对反射部分之间设置在激光束的光路上的光学系统（凸透镜1），用于改变激光介质中激光的状态; 以及用于沿着激光的光轴移动光学系统的移动部分。

    Method and apparatus for surgery of the cornea using short laser pulses having shallow ablation depth
    44.
    发明申请
    Method and apparatus for surgery of the cornea using short laser pulses having shallow ablation depth 有权
    使用具有浅消融深度的短激光脉冲进行角膜手术的方法和装置

    公开(公告)号：US20010010003A1

    公开(公告)日：2001-07-26

    申请号：US09799412

    申请日：2001-03-05

    Inventor： Shui T. Lai

    IPC: A61F009/01 ,  H01S003/10

    CPC classification number: B23K26/0665 ,  A61B2017/00694 ,  A61F9/00804 ,  A61F9/00814 ,  A61F2009/00846 ,  A61F2009/00872 ,  A61F2009/00897 ,  B23K26/0096 ,  B23K26/03 ,  B23K26/032 ,  B23K26/04 ,  B23K26/043 ,  B23K26/06 ,  B23K26/0624 ,  B23K26/0648 ,  B23K26/0652 ,  B23K26/704 ,  G02B26/10 ,  G02F1/37 ,  H01S3/005 ,  H01S3/06 ,  H01S3/101 ,  H01S3/235

    Abstract: A laser-based method and apparatus for corneal surgery. The present invention is intended to be applied primarily to ablate organic materials, and human cornea in particular. The invention uses a laser source which has the characteristics of providing a shallow ablation depth (0.2 microns or less per laser pulse), and a low ablation energy density threshold (less than or equal to about 10 mJ/cm2), to achieve optically smooth ablated corneal surfaces. The preferred laser includes a laser emitting approximately 100-50,000 laser pulses per second, with a wavelength of about 198-300 nm and a pulse duration of about 1-5,000 picoseconds. Each laser pulse is directed by a highly controllable laser scanning system. Described is a method of distributing laser pulses and the energy deposited on a target surface such that surface roughness is controlled within a specific range. Included is a laser beam intensity monitor and a beam intensity adjustment means, such that constant energy level is maintained throughout an operation. Eye movement during an operation is corrected for by a corresponding compensation in the location of the surgical beam. Beam operation is terminated if the laser parameters or the eye positioning is outside of a predetermined tolerable range. The surgical system can be used to perform surgical procedures including removal of corneal scar, making incisions, cornea transplants, and to correct myopia, hyperopia, astigmatism, and other corneal surface profile defects.

    Abstract translation: 一种基于激光的角膜手术方法和装置。 本发明旨在主要用于消融有机材料，特别是人角膜。 本发明使用具有提供浅消融深度（每个激光脉冲0.2微米或更小）和低消融能量密度阈值（小于或等于约10mJ / cm 2）的特征的激光源，以实现光学平滑 消融角膜表面。 优选的激光器包括每秒发射大约100-50,000激光脉冲的激光器，波长约为198-300nm，脉冲持续时间约为1-5,000皮​​秒。 每个激光脉冲由高度可控的激光扫描系统引导。 描述了分配激光脉冲和沉积在目标表面上的能量的方法，使得表面粗糙度被控制在特定范围内。 包括激光束强度监视器和光束强度调节装置，使得在整个操作中保持恒定的能量水平。 通过对外科手术束的位置进行相应的补偿来校正手术期间的眼睛运动。 如果激光参数或眼睛定位超出预定的可容许范围，则光束操作终止。 手术系统可用于执行外科手术，包括去除角膜瘢痕，制作切口，角膜移植物，并矫正近视，远视，散光和其他角膜表面轮廓缺陷。

    Mode locked laser diode in a high power solid state regenerative amplifier and mount mechanism
    45.
    发明授权
    Mode locked laser diode in a high power solid state regenerative amplifier and mount mechanism 失效
    模式锁定激光二极管在高功率固态再生放大器和安装机构中

    公开(公告)号：US5469454A

    公开(公告)日：1995-11-21

    申请号：US236373

    申请日：1994-05-02

    Applicant: Peter J. Delfyett, Jr.

    Inventor： Peter J. Delfyett, Jr.

    IPC: G02F1/21 ,  H01S3/098 ,  H01S5/022 ,  H01S5/024 ,  H01S5/062 ,  H01S5/065 ,  H01S5/14 ,  H01S5/50

    CPC classification number: H01S5/0657 ,  G02F1/218 ,  H01S2301/08 ,  H01S3/08004 ,  H01S3/1118 ,  H01S3/235 ,  H01S3/2375 ,  H01S5/0057 ,  H01S5/0064 ,  H01S5/02236 ,  H01S5/02415 ,  H01S5/0622 ,  H01S5/141 ,  H01S5/50

    Abstract: A mode locked as a seed source for a solid state regenerative amplifier system is disclosed. The system includes components for forming an external cavity laser with a semiconductor amplifier, exciting and mode locking the cavity laser to emit optical pulses with a linearly time varying optical frequency, collecting and collimating the optical pulses, isolating the optical pulses and amplifying the optical pulses for a selected application. The selected applications include but are not limited to medical imaging, fuel diagnostics, ultrafast spectroscopic measurements, network synchronization, distributed optical clock network, electro-optic sampling, timing Jitter reduction, a source for inducing nonlinear optical effects, and optical time domain relectometry. A mount mechanism support for an optic system is also disclosed. The mount support includes an optic component such as a semiconductor laser diode, a semiconductor optical amplifier, and a fiber optical amplifier as well as mounts for the optic component. The mount further includes a stud for supporting the optic component, cooling and heat-sinking elements for the component, and an isolator for thermally isolating and separating the mounts from the elements. The thermal isolator includes material selected from teflon and double-panel glass. The mounts can further include a vertical mounting block with one side attached to the isolator and a second mounting block positioned perpendicular to and supporting the vertical mounting block.

    Abstract translation: 公开了一种锁定为固态再生放大器系统的种子源的模式。 该系统包括用于形成具有半导体放大器的外腔激光器的部件，激励和模式锁定腔激光器以发射具有线性时变光频率的光脉冲，收集和准直光脉冲，隔离光脉冲并放大光脉冲 用于选定的应用程序。 所选择的应用包括但不限于医学成像，燃料诊断，超快光谱测量，网络同步，分布式光时钟网络，电光采样，定时抖动降低，用于诱导非线性光学效应的源和光时域反射测量。 还公开了一种用于光学系统的安装机构支撑。 安装支架包括诸如半导体激光二极管的光学部件，半导体光放大器和光纤放大器以及用于光学元件的安装件。 安装座还包括用于支撑光学部件的螺柱，用于部件的冷却和散热元件，以及用于将安装件与元件热隔离和分离的隔离器。 热隔离器包括选自聚四氟乙烯和双层玻璃的材料。 安装件还可以包括垂直安装块，其一侧连接到隔离器，以及垂直于并支撑垂直安装块定位的第二安装块。

    Pockel cell damping system
    46.
    发明授权
    Pockel cell damping system 失效
    Pockel电池阻尼系统

    公开(公告)号：US5221988A

    公开(公告)日：1993-06-22

    申请号：US797122

    申请日：1991-11-21

    Applicant: Tibor Juhasz

    Inventor： Tibor Juhasz

    IPC: G02F1/03 ,  H01S3/23

    CPC classification number: H01S3/235 ,  G02F1/0305 ,  G02F2201/505

    Abstract: A device for damping the vibrations of an elongated, substantially rectangular crystal in response to an applied high voltage electrical field comprises a pair of dielectric panes which are impedance matched with the crystal and are attached to opposite sides thereof. As attached to the crystal, each of the panes is disposed at the periphery of the electrical field, and an aluminum block is attached to each of the panes on a surface which is opposite from the crystal. The mass of aluminum blocks, and the texture of their exposed outer surfaces cooperate to mechanically dampen the acoustic vibrations transmitted from the crystal through the panes. Additionally, the rectangular dimensions of the crystal are chosen to delay the propagation of acoustic waves from the surfaces of the crystal to its center. This is done in order to preserve an optical window through the crystal for a period of time during which this window, at the center of the crystal, experiences only the electro-optical effect caused by an applied electrical field and does not experience the "ringing" which is caused by acoustic waves.

    Abstract translation: 用于响应于所施加的高电压电场来衰减细长的基本上矩形的晶体的振动的装置包括与晶体阻抗匹配并且附接到其相对侧的一对电介质平板。 附着在晶体上的每个窗格都设置在电场的周围，并且在与晶体相反的表面上的每个窗格上安装有铝块。 铝块的质量和其暴露的外表面的质感协调，以机械地抑制通过窗格从晶体传递的声振动。 此外，选择晶体的矩形尺寸以延迟声波从晶体表面到其中心的传播。 这是为了保持通过晶体的光学窗口持续一段时间，在该时间段期间，在晶体中心处的该窗口仅经历由施加的电场引起的电光效应，并且不经历“振铃 “这是由声波引起的。

    Travelling wave regenerative laser amplifier
    49.
    发明授权
    Travelling wave regenerative laser amplifier 失效
    行驶波浪再生激光放大器

    公开(公告)号：US3646469A

    公开(公告)日：1972-02-29

    申请号：US3646469D

    申请日：1970-03-20

    Applicant: UNITED AIRCRAFT CORP

    Inventor： BUCZEK CARL J ,  SKOLNICK MICHAEL L

    IPC: H01S3/083 ,  H01S3/10 ,  H01S3/139 ,  H01S3/23 ,  H01S3/00 ,  G01B9/02

    CPC classification number: H01S3/235 ,  H01S3/083 ,  H01S3/1398

    Abstract: A unidirectional travelling wave regenerative amplifier includes gain medium disposed in a travelling wave ring interferometer, the unidirectional travelling wave permitting coupling of a driving oscillator thereto without the amplifier feeding back to the oscillator. Because the amplifier is operated near saturation intensity, the output characteristic (with respect to frequency) is broadened; therefore, the output power and phase stability are relatively insensitive to variations in physical resonance. A hill climbing servo maintains the cavity of the ring interferometer at a length which relates precisely to the output frequency of the driving oscillator.

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