公开(公告)号：US08073017B1

公开(公告)日：2011-12-06

申请号：US12711011

申请日：2010-02-23

申请人： William P. Hooper ,  Glendon M. Frick ,  Benjamin P. Michael

发明人： William P. Hooper ,  Glendon M. Frick ,  Benjamin P. Michael

IPC分类号： H01S3/30 ,  H01S3/10 ,  H01S3/08

CPC分类号： H01S3/305 ,  H01S3/094038 ,  H01S3/10092

摘要： A system and method for converting a pulsed beam of irradiation from a laser operating at a first wavelength to a pulsed beam of irradiation at a second, Stokes, wavelength. The system includes two Raman cells filled with the same Raman-active gas. The second cell receives a backward-propagating Stokes pulse beam from the first Raman cell, with the backward-propagating Stokes pulsed beam entering the second Raman cell in a direction opposite to the direction of travel of the incoming laser pulses at the first wavelength. The second Raman cell generates a high intensity output pulsed beam at the second, Stokes, wavelength. The system can produce a high intensity eye-safe pulsed beam.

摘要翻译： 一种用于将来自在第一波长工作的激光的脉冲束的脉冲束转换成第二波长的第二辐射脉冲束的系统和方法。 该系统包括两个填充有相同拉曼活性气体的拉曼细胞。 第二单元从第一拉曼单元接收反向传播的斯托克斯脉冲波束，反向传播的斯托克斯脉冲波束以与第一波长的输入激光脉冲的行进方向相反的方向进入第二拉曼单元。 第二个拉曼单元在第二个斯托克斯波长处产生高强度输出脉冲波束。 该系统可以产生高强度眼睛安全的脉冲束。

公开(公告)号：US20110097045A1

公开(公告)日：2011-04-28

申请号：US11814645

申请日：2006-01-24

申请人： Abdel Fetah Benabid

发明人： Abdel Fetah Benabid

IPC分类号： G02B6/032 ,  G02B6/255

CPC分类号： H01S3/302 ,  G02B6/02328 ,  G02B6/02347 ,  G02B6/255 ,  H01S3/06729 ,  H01S3/06741 ,  H01S3/08009 ,  H01S3/094046 ,  H01S3/305

摘要： An optical assembly includes a gas cell and an optical fibre portion in which the gas cell is contiguously attached to the optical fibre portion. The gas cell can be made, for example from hollow-core photonic crystal fibre (HC-PCF).

摘要翻译： 光学组件包括气室和光纤部分，其中气室连续地附接到光纤部分。 气室可以由例如中空光子晶体光纤（HC-PCF）制成。

公开(公告)号：US07110171B2

公开(公告)日：2006-09-19

申请号：US10766224

申请日：2004-01-28

申请人： C. Brent Dane ,  Lloyd Hackel ,  Fritz B. Harris

发明人： C. Brent Dane ,  Lloyd Hackel ,  Fritz B. Harris

IPC分类号： H01S3/13 ,  H01S3/08

CPC分类号： H01S3/2333 ,  C21D10/005 ,  H01S3/10076 ,  H01S3/305

摘要： A laser system includes an optical path having an intracavity relay telescope with a telescope focal point for imaging an output of the gain medium between an image location at or near the gain medium and an image location at or near an output coupler for the laser system. A kinematic mount is provided within a vacuum chamber, and adapted to secure beam baffles near the telescope focal point. An access port on the vacuum chamber is adapted for allowing insertion and removal of the beam baffles. A first baffle formed using an alignment pinhole aperture is used during alignment of the laser system. A second tapered baffle replaces the alignment aperture during operation and acts as a far-field baffle in which off angle beams strike the baffle a grazing angle of incidence, reducing fluence levels at the impact areas.

摘要翻译： 激光系统包括具有腔内中继望远镜的光路，其具有望远镜焦点，用于在增益介质附近或附近的图像位置与激光系统的输出耦合器处或附近的图像位置成像增益介质的输出。 运动支架设置在真空室内，并适用于将望远镜焦点附近的光束挡板固定。 真空室上的进入口适于允许光束挡板的插入和移除。 在激光系统对准期间使用使用对准针孔孔形成的第一挡板。 第二锥形挡板在操作期间取代了对准孔，并且用作远场挡板，其中偏转角射束将挡板撞击入射角，从而降低冲击区域的注量水平。

公开(公告)号：US20050078714A1

公开(公告)日：2005-04-14

申请号：US10681441

申请日：2003-10-08

申请人： Hiroshi Komine

发明人： Hiroshi Komine

IPC分类号： G02B6/02 ,  G02B6/12 ,  H01S3/067 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/30 ,  H01S5/40

CPC分类号： G02B6/02328 ,  H01S3/0941 ,  H01S3/1618 ,  H01S3/302 ,  H01S3/305 ,  H01S5/4068

摘要： A relatively high power fiber laser with an output wavelength in a spectral region considered to be “eye-safe” is disclosed. The high power fiber laser includes one or more fiber lasers that are fiber coupled, bundled and tapered into a multi-mode fiber. The multi-mode fiber is coupled into a hollow core, photonic band gap optical fiber filled with a Raman medium. In particular, fiber lasers formed from Yttrebium fibers having a nominal output wavelength of 1060-1120 nanometers are shifted to the eye-safe wavelength range by way of a hollow core photonic bond gap (PBG) filled with deuterium (D2) gas. Diode lasers having an output wavelength in the range of 940-980 nanometers can also be shifted to an eye-safe wavelength by direct Raman shifting of fiber coupled diode array to a hollow core PBG fiber filled with hydrogen (H2 gas). The use of the PBG optical fibers filled with various Raman medium for shifting the output wavelength of high power fiber lasers and diode lasers is relatively simple and inexpensive.

摘要翻译： 公开了一种被认为是“眼睛安全”的光谱区域中具有输出波长的相对高功率的光纤激光器。 高功率光纤激光器包括一个或多个纤维激光器，其被光纤耦合，捆扎和锥形成多模光纤。 多模光纤耦合到中空芯，填充有拉曼介质的光子带隙光纤。 特别地，由具有1060-1120纳米的标称输出波长的镱纤维形成的光纤激光器通过填充有氘（D2）气体的空心光子间隙（PBG）转移到眼睛安全的波长范围。 具有940-980纳米范围内的输出波长的二极管激光器也可以通过光纤耦合二极管阵列的直接拉曼移位到填充有氢气（H2气体）的中空芯PBG纤维而转移到眼睛安全的波长。 使用填充有各种拉曼介质的PBG光纤来移动大功率光纤激光器和二极管激光器的输出波长相对简单且便宜。

公开(公告)号：US5258988A

公开(公告)日：1993-11-02

申请号：US914238

申请日：1992-07-17

申请人： Stewart T. Whittley

发明人： Stewart T. Whittley

IPC分类号： H01S3/30

CPC分类号： H01S3/305

摘要： The present invention provides a Raman laser wherein hazardous radiation from a pump laser source 20 is focused by lens 25 via a cell 27 containing a Raman active medium before passing to a absorbing beam dump 30. Lasing action is maintained within the cell 27 by the action of mirrors 29 and 26 which are respectively totally and partially reflective to radiation generated at the Raman wavelength, and which are both transmissive to the pump beam. A Raman beam exits the cell via partially transmissive mirror 26 is refocused by lens 25 and passes through to the output of the device 31. This configuration provides a Raman laser where the "eyesafe" Raman beam is generated in a backwards direction relative to the pump beam, so that during normal operation, or in the event that the optics breakdown, or conversion does not take place within the cell, the output beam would not be contaminated by potentially harmful wavelengths at a hazardous level.

公开(公告)号：US5251221A

公开(公告)日：1993-10-05

申请号：US926736

申请日：1992-08-10

申请人： Robert D. Stultz ,  Michael E. Ehritz

发明人： Robert D. Stultz ,  Michael E. Ehritz

IPC分类号： H01S3/08 ,  H01S3/094 ,  H01S3/108 ,  H01S3/30

CPC分类号： H01S3/305

摘要： Intracavity Raman lasers comprising a pump resonator and a Raman resonator that eliminates alignment problems associated with multi-mirror intracavity lasers. The pump resonators include a laser rod and a pump source. In one embodiment, a first retroreflector is disposed at one end of the pump resonator, and an output mirror is disposed at an opposite end thereof. A Q-switch, a dichroic mirror, and a prism are disposed between the laser rod and the output mirror. The pump resonator radiates pump energy at a first wavelength (1.06 .mu.m) between the first retroreflector and the output mirror. The Raman resonator includes a Raman gas cell having first and second lenses disposed on opposite ends thereof for focusing laser energy into the Raman cell, and a second retroreflector that forms one end of the Raman resonator. The output mirror forms an opposite end of the cell, and the dichroic mirror and the prism are disposed between the second retroreflector and the first lens. The Raman resonator radiates Raman laser energy at a second wavelength (1.54 .mu.m) between the second retroreflector and the output mirror. A second embodiment eliminates the second retroreflector and dichroic mirror and moves the position of the Q-switch to a point between the retroreflector and the laser rod. The present lasers are extremely insensitive to misalignment and have eyesafe output energy and acceptable beam divergence. The present lasers, in a production design, may be mechanically toleranced so that no optical alignment is necessary. Due to their self-aligning nature, the present lasers have fewer components and operate at higher pulse repetition frequencies than conventional multi-mirror intracavity lasers.

公开(公告)号：US5222093A

公开(公告)日：1993-06-22

申请号：US620031

申请日：1990-11-30

申请人： Jean-Paul Pocholle ,  Michel Papuchon ,  Jean-Pierre Huignard ,  Claude Puech

发明人： Jean-Paul Pocholle ,  Michel Papuchon ,  Jean-Pierre Huignard ,  Claude Puech

IPC分类号： H01S3/23 ,  H01S3/30

CPC分类号： H01S3/305 ,  H01S2301/20 ,  H01S3/08063 ,  H01S3/08068

摘要： A laser having a glass enclosure placed in an optical cavity receives a pump beam and generates at least one first-order and one second-order Stokes wave. The construction is such that an optical waveguide placed in the gas enclosure is used to select the first and the second-order Stokes wave.

摘要翻译： 具有放置在光腔中的玻璃外壳的激光器接收泵浦光束并且产生至少一个一阶和一个二阶斯托克斯波。 该结构使得放置在气体外壳中的光波导用于选择第一和第二阶斯托克斯波。

公开(公告)号：US5180378A

公开(公告)日：1993-01-19

申请号：US613110

申请日：1990-11-14

申请人： Robert T. V. Kung ,  Robert B. Stewart

发明人： Robert T. V. Kung ,  Robert B. Stewart

IPC分类号： A61B18/22 ,  H01S3/30

CPC分类号： H01S3/305 ,  A61B18/22

摘要： A multi-wavelength surgical laser apparatus of improved construction employs a fluid-filled stimulated Raman scattering cell in an optical feedback path of a pump laser having a power in a range suitable for surgery, and drives the Raman cell at a high repetition rate in a manner to produce a laser output at a substantially shifted wavelength at a power commensurate with that of the pump laser. In a preferred system, the relative proportions of pump light and Raman scattered light are varied to achieve a desired cutting or coagulating action. Preferably, the pump laser is operated at a pulse repetition rate above five hundred Hz. The fluid Raman medium is pumped across the optical axis of the cell. The flow system effectively doubles the Raman conversion efficiency and permits high power output while lowering the Raman lasing threshold. Systems include a fiber for conducting output light to a surgical probe, and a variable output coupler to vary the relative amounts of pump and Stokes radiation coupled into the fiber. Light generated at visible wavelengths by Stokes processes in the Raman cell provides auxiliary beam for targeting or observation purposes.

摘要翻译： 具有改进结构的多波长手术激光装置采用在具有适于手术的范围内的功率的泵激光器的光学反馈路径中的流体填充的受激拉曼散射单元，并且以高重复率驱动拉曼单元 以与泵浦激光器的激光输出相当的功率以实质上变化的波长产生激光输出。 在优选的系统中，改变泵浦光和拉曼散射光的相对比例以实现期望的切割或凝结作用。 优选地，泵浦激光器以高于500Hz的脉冲重复频率操作。 流体拉曼介质被泵送穿过电池的光轴。 流量系统有效地使拉曼转换效率提高了一倍，并且在降低拉曼激光阈值的同时允许高功率输出。 系统包括用于向外科手术探针输出光的光纤和可变输出耦合器，以改变耦合到光纤中的泵和斯托克斯辐射的相对量。 在拉曼光电池中通过斯托克斯方程可见波长产生的光提供辅助光束用于瞄准或观察目的。

公开(公告)号：US5151626A

公开(公告)日：1992-09-29

申请号：US657280

申请日：1991-02-19

申请人： Donald R. Dewhirst

发明人： Donald R. Dewhirst

IPC分类号： G01N21/65 ,  H01S20060101 ,  H01S3/134 ,  H01S3/30

CPC分类号： H01S3/305

摘要： In a Raman cell (10) which is subject to optical distortion of the path of a laser beam (40) by heating of the gas from the Raman conversion process, vibrating blades (50) cause the gas to mix and thus provide thermal homogeneity within the beam path.

摘要翻译： 在通过加热来自拉曼转换过程的气体的激光束（40）的路径的光学变形的拉曼单元（10）中，振动叶片（50）使得气体混合并因此提供热均匀性 光束路径。

公开(公告)号：US5142645A

公开(公告)日：1992-08-25

申请号：US701394

申请日：1991-05-16

申请人： Daniel L. Katz

发明人： Daniel L. Katz

IPC分类号： H01S3/30

CPC分类号： H01S3/305

摘要： The present invention provides an apparatus and method for generating blue laser light having a wavelength corresponding to a solar Fraunhofer line. The blue laser light is at a frequency that has both excellent transmissibility through sea water and a high signal-to-noise ratio. A first laser beam, generated using an injection-locked excimer XeCl laser, is down-converted by a first-Stokes order shift of 2.times.4155 cm.sup.-1 in a first Raman cell containing H.sub.2 gas at a pressure of about 10 atmospheres. The output of the first Raman cell is down-converted by a first Stokes shift of 3628 cm.sup.-1 in a second Raman cell containing HD at a pressure of about 10 atmospheres so that the output of the second Raman cell has a wavelength of 486.366 nm. This wavelength corresponds to the FE I solar Fraunhofer line.

摘要翻译： 本发明提供一种用于产生具有对应于太阳能Fraunhofer线的波长的蓝色激光的装置和方法。 蓝色激光的频率通过海水具有优异的透射率和高的信噪比。 使用注射锁定的准分子XeCl激光器产生的第一激光束在约10个大气压的压力下在含有H 2气体的第一拉曼电池中通过2×4155cm -1的第一斯托克斯次序下变换。 第一拉曼单元的输出在约10个大气压的压力下在含有HD的第二拉曼单元中通过3628cm -1的第一斯托克斯移位下转换，使得第二拉曼单元的输出波长为486.366nm 。 该波长对应于FE I太阳能Fraunhofer线。