公开(公告)号：US06822978B2

公开(公告)日：2004-11-23

申请号：US10194439

申请日：2002-07-12

申请人： James D. Kafka ,  David E. Spence

发明人： James D. Kafka ,  David E. Spence

IPC分类号： H01S3098

CPC分类号： H01S3/1112 ,  B23K26/0624 ,  B23K26/40 ,  B23K2101/40 ,  B23K2103/50 ,  G01N21/9501 ,  H01S3/06741 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1106 ,  H01S3/1673 ,  H01S3/23 ,  H01S3/2316 ,  H01S3/2383

摘要： A laser apparatus includes a modelocked laser system with a high reflector and an output coupler that define an oscillator cavity. An output beam is produced from the oscillator cavity. A gain medium and a modelocking device are positioned in the oscillator cavity. A diode pump source produces a pump beam that is incident on the gain medium. A second harmonic generator is coupled to the oscillator cavity. A third harmonic generator that produces a UV output beam, is coupled to the second harmonic generator. A photonic crystal fiber is provided with a proximal end coupled to the laser system. A delivery device is coupled to a distal portion of the photonic crystal fiber.

摘要翻译： 激光装置包括具有高反射器的锁模激光系统和限定振荡器腔的输出耦合器。 输出光束由振荡器腔产生。 增益介质和锁模装置位于振荡器腔中。 二极管泵浦源产生入射在增益介质上的泵浦光束。 二次谐波发生器耦合到振荡器腔。 产生UV输出光束的三次谐波发生器耦合到二次谐波发生器。 光子晶体光纤具有耦合到激光系统的近端。 递送装置耦合到光子晶体光纤的远端部分。

公开(公告)号：US06246706B1

公开(公告)日：2001-06-12

申请号：US09322803

申请日：1999-05-27

申请人： James D. Kafka ,  Bruce Craig

发明人： James D. Kafka ,  Bruce Craig

IPC分类号： H01S310

CPC分类号： G03F7/704

摘要： A laser writing system includes a high reflector and an output coupler that define an oscillator cavity. A gain medium and a mode locking device are positioned in the oscillator cavity. A diode pump source produces a pump beam that is incident on the gain medium and an output beam is produced. A support holds a workpiece. Means are provided for directing the output beam across the workpiece.

摘要翻译： 激光写入系统包括高反射器和限定振荡器腔的输出耦合器。 增益介质和模式锁定装置位于振荡器腔中。 二极管泵浦源产生入射在增益介质上并且产生输出光束的泵浦光束。 支撑件保持工件。 提供了用于将输出光束引导穿过工件的装置。

公开(公告)号：US08902939B2

公开(公告)日：2014-12-02

申请号：US13011780

申请日：2011-01-21

申请人： James D. Kafka ,  Ching-Yuan Chien ,  Yujun Deng ,  Andrei C. Florean ,  David E. Spence ,  Jianping Zhou

发明人： James D. Kafka ,  Ching-Yuan Chien ,  Yujun Deng ,  Andrei C. Florean ,  David E. Spence ,  Jianping Zhou

IPC分类号： H01S3/10 ,  H01S3/00 ,  G01N21/35 ,  G01N21/39 ,  H01S3/108 ,  H01S3/11 ,  G02F1/39

CPC分类号： H01S3/1083 ,  G01N21/359 ,  G01N21/39 ,  G01N2021/399 ,  G02F1/39 ,  H01S3/0014 ,  H01S3/005 ,  H01S3/0057 ,  H01S3/0071 ,  H01S3/0092 ,  H01S3/1106 ,  H01S3/1118

摘要： A novel broadly tunable optical parametric oscillator is described for use in numerous applications including multi-photon microscopy. The optical parametric oscillator includes at least one sub-picosecond laser pump source configured to output a pump signal having a wavelength of about 650 nm or less and at least one type II optical parametric oscillator in optical communication with the pump source and configured to generate a single widely tunable pulsed optical signal. In one application, an optical system is in optical communication with the optical parametric oscillator and configured to direct at least a portion of the optical signal to a specimen, and at least one analyzing device is configured to receive a signal from the specimen in response to the optical signal.

摘要翻译： 描述了一种新颖的广泛可调光参量振荡器用于包括多光子显微镜在内的许多应用中。 所述光学参量振荡器包括至少一个亚皮秒激光泵浦源，其被配置为输出波长为约650nm或更小的泵浦信号，以及至少一个类型II光参量振荡器与所述泵浦源光学通信并被配置为产生 单个广泛可调脉冲光信号。 在一个应用中，光学系统与光学参量振荡器光学通信，并被配置为将光信号的至少一部分引导到样本，并且至少一个分析装置被配置为响应于 光信号。

公开(公告)号：US07027477B2

公开(公告)日：2006-04-11

申请号：US10232885

申请日：2002-08-30

申请人： Dirk Sutter ,  James D. Kafka

发明人： Dirk Sutter ,  James D. Kafka

IPC分类号： H01S3/091

CPC分类号： H01S3/09415 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/0604 ,  H01S3/0606 ,  H01S3/0627 ,  H01S3/08072 ,  H01S3/1618

摘要： An optical system includes a diode pump source and a thin disk gain media. The thin disk gain media has first and second surfaces and is made of a material with an anisotropic thermal expansion. At least one of the first and second surfaces is a cooling surface. The thin disk gain media is cut at an angle to provide substantially the same thermal expansion coefficient in all directions lying in a plane that is parallel to the cooling surface. An optical coupler is positioned between the diode pump source and the thin disk gain media to direct an output from the diode pump source to the thin disk gain media.

摘要翻译： 光学系统包括二极管泵源和薄盘增益介质。 薄盘增益介质具有第一和第二表面，并且由具有各向异性热膨胀的材料制成。 第一和第二表面中的至少一个是冷却表面。 薄板增益介质以一定角度切割，以在平行于冷却表面的平面中的所有方向提供基本上相同的热膨胀系数。 光耦合器位于二极管泵浦源和薄盘增益介质之间，以将来自二极管泵浦源的输出引导到薄盘增益介质。

公开(公告)号：US06734387B2

公开(公告)日：2004-05-11

申请号：US10114337

申请日：2002-04-01

申请人： James D. Kafka ,  Mingwei Li

发明人： James D. Kafka ,  Mingwei Li

IPC分类号： B23K2638

CPC分类号： G01N21/9501 ,  B23K26/0624 ,  B23K26/364 ,  B23K26/40 ,  B23K2101/40 ,  B23K2103/42 ,  B23K2103/50 ,  H01S3/1106 ,  H01S3/1118 ,  H01S3/2316

摘要： A micro-machining apparatus includes a mode-locked, infrared laser system with a high reflector and an output coupler that define an oscillator cavity which produces an output beam. A gain medium and a mode locking device are positioned in the oscillator cavity. A diode pump source produces a pump beam that is incident on the gain medium. A second harmonic generator is coupled to the oscillator cavity. A third harmonic generator is coupled to the second harmonic generator and produces a UV output beam. An output beam directing apparatus directs the output beam to a polymeric surface of an article. At least a portion of the polymeric material is micro-machined by the output beam.

摘要翻译： 微加工设备包括具有高反射器的锁模式红外激光系统和限定产生输出光束的振荡器腔的输出耦合器。 增益介质和模式锁定装置位于振荡器腔中。 二极管泵浦源产生入射在增益介质上的泵浦光束。 二次谐波发生器耦合到振荡器腔。 三次谐波发生器耦合到二次谐波发生器并产生UV输出光束。 输出光束引导装置将输出光束引导到物品的聚合物表面。 聚合物材料的至少一部分被输出光束微加工。

公开(公告)号：US5847861A

公开(公告)日：1998-12-08

申请号：US239266

申请日：1994-05-06

申请人： James D. Kafka ,  Michael L. Watts ,  Jan-Willem J. Pieterse ,  Kevin K. Holsinger

发明人： James D. Kafka ,  Michael L. Watts ,  Jan-Willem J. Pieterse ,  Kevin K. Holsinger

IPC分类号： G02F1/39 ,  H01S3/094

CPC分类号： G02F1/39 ,  H01S3/094026

摘要： A synchronously pumped optical parametric oscillator (OPO) using a temperature tuned 90 degree phase matched LBO crystal is disclosed which provides a broad selection of output wavelengths. In one embodiment a Ti:sapphire pump source having a cavity length matched to the OPO cavity length pumps a cavity with an LBO crystal located at the cavity waist of the cavity mode. Resources are included to, tune the OPO to a desired wavelength, repetitively scan through a series of desired wavelengths, and adjust the cavity length to obtain a synchronous pumping condition and diagnose a wavelength at which the OPO is operating. A frequency doubled beam in the LBO crystal is generated as a substantially collinear alignment beam.

摘要翻译： 公开了使用温度调节的90度相位匹配的LBO晶体的同步泵浦光参量振荡器（OPO），其提供了广泛的输出波长选择。 在一个实施例中，具有与OPO腔体长度匹配的腔长度的Ti：蓝宝石泵浦源泵浦位于空腔模式的空腔腰部处的LBO晶体的空腔。 包括资源，将OPO调谐到期望的波长，重复扫描一系列期望的波长，并调整腔长度以获得同步泵浦状态并诊断OPO运行的波长。 产生LBO晶体中的倍频光束作为基本上共线的对准光束。

公开(公告)号：US06891876B2

公开(公告)日：2005-05-10

申请号：US10233138

申请日：2002-08-30

申请人： Dirk Sutter ,  James D. Kafka

发明人： Dirk Sutter ,  James D. Kafka

IPC分类号： H01S3/06 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/091

CPC分类号： H01S3/0941 ,  H01S3/0604 ,  H01S3/094073 ,  H01S3/1618 ,  H01S3/1675

摘要： An optical system has a diode pump source, and a gain media made of a material with an anisotropic absorption. The gain media is cut at an angle to produce substantially polarization-independent absorption of a pump beam. An optical coupler is positioned between the diode pump source and the gain media. The optical coupler produces a pump beam that has substantially equal amounts of pump power along any two orthogonal axis that are orthogonal to the pump beam in the gain medium. The wavelength range allowed for the pump source is extended.

摘要翻译： 光学系统具有二极管泵浦源和由具有各向异性吸收的材料制成的增益介质。 增益介质以一定角度切割，以产生泵浦光束的基本上偏振无关的吸收。 光耦合器位于二极管泵浦源和增益介质之间。 光耦合器产生泵浦光束，其具有与在增益介质中与泵浦光束正交的任何两个正交轴线基本上相等量的泵浦功率。 泵浦源允许的波长范围延长。

公开(公告)号：US06236779B1

公开(公告)日：2001-05-22

申请号：US09317652

申请日：1999-05-24

申请人： James D. Kafka ,  David E. Spence

发明人： James D. Kafka ,  David E. Spence

IPC分类号： G02B626

CPC分类号： G02B6/4204 ,  B82Y20/00 ,  G02B6/02214 ,  G02B6/02295

摘要： A system is provided that delivers sub-picosecond pulses. The system includes a source that produces an output beam of sub-picosecond pulses at a wavelength no greater than 1.27 microns. A photonic crystal fiber is coupled to the source to receive the output beam. The photonic crystal fiber delivering pulses at the target with a pulsewidth less than 2 times a pulsewidth of the source. A first optical device is positioned between the source and the fiber. The first optical element couples the output beam into an input end of the fiber. A second optical device is positioned at an output end of the fiber that delivers the output beam to a selected target.

摘要翻译： 提供了提供亚皮秒脉冲的系统。 该系统包括在不大于1.27微米的波长处产生亚皮秒脉冲的输出光束的源。 光子晶体光纤耦合到源以接收输出光束。 光子晶体光纤在目标处传送脉冲，脉冲宽度小于源的脉冲宽度的2倍。 第一光学装置位于光源和光纤之间。 第一光学元件将输出光束耦合到光纤的输入端。 第二光学装置位于光纤输出端，将输出光束传送到选定的目标。

公开(公告)号：US5696780A

公开(公告)日：1997-12-09

申请号：US680576

申请日：1996-07-12

申请人： Jan-Willem Pieterse ,  James D. Kafka ,  Shinan S. Sheng ,  William L. Nighan, Jr.

发明人： Jan-Willem Pieterse ,  James D. Kafka ,  Shinan S. Sheng ,  William L. Nighan, Jr.

IPC分类号： A61F9/008 ,  G02F1/35 ,  G02F1/37 ,  H01S3/081 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/10

CPC分类号： A61F9/008 ,  G02F1/37 ,  H01S3/109 ,  G02F2001/3542 ,  H01S3/081 ,  H01S3/094053 ,  H01S3/09415 ,  H01S3/13 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/1653 ,  H01S3/1673

摘要： A multi-axial mode frequency conversion system includes two resonators. At least two resonator mirrors define a first resonator cavity. A gain medium is positioned in the first resonator cavity. A pump source supplies energy to the gain medium. The first resonator cavity produces a first beam with a plurality of axial modes that are incident on a doubling crystal in the first resonator and produce a frequency doubled output beam. The first resonator cavity provides a sufficient number of axial modes to oscillate so that the doubled output beam has a noise of less than 3% RMS. At least two resonator mirrors define a second resonator cavity coupled to the output beam from the first resonator cavity. The second resonator is configured to provide resonant enhancement of at least a portion of the plurality of axial modes. A non-linear optical material is positioned in the second resonator and configured to produce a harmonic output beam.

摘要翻译： 多轴模式变频系统包括两个谐振器。 至少两个谐振器反射镜限定第一谐振腔。 增益介质位于第一谐振腔中。 泵浦源向增益介质供应能量。 第一谐振器腔产生具有入射在第一谐振器中的双晶上的多个轴向模的第一光束，并产生倍频输出光束。 第一谐振腔提供了足够数量的轴向振动模式，使得双倍输出光束具有小于3％RMS的噪声。 至少两个谐振器镜限定耦合到来自第一谐振腔的输出光束的第二谐振腔。 第二谐振器被配置为提供多个轴向模式的至少一部分的谐振增强。 非线性光学材料定位在第二谐振器中并且被配置为产生谐波输出光束。

公开(公告)号：US4829529A

公开(公告)日：1989-05-09

申请号：US62739

申请日：1987-06-15

申请人： James D. Kafka

发明人： James D. Kafka

IPC分类号： H01S3/094

CPC分类号： H01S3/094003 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/094069

摘要： A fiber laser having a single mode fiber core of laser material is pumped by a high power coherent laser diode source by providing a multi-mode fiber around the single mode core to define a pump cavity which propagates pump radiation while allowing the pump radiation to couple to the single mode core. Laser diode arrays and extended emitter laser diodes can be used to pump a single mode fiber by inputting the pump radiation into the multi-mode fiber surrounding the single mode fiber core. The milti-mode fiber has a much greater diameter than the single mode core.

摘要翻译： 具有激光材料的单模光纤芯的光纤激光器由高功率相干激光二极管源泵浦，通过在单模芯周围提供多模光纤来限定泵腔，其传播泵浦辐射，同时允许泵浦辐射耦合 到单模核心。 激光二极管阵列和扩展的发射极激光二极管可用于通过将泵浦辐射输入到围绕单模光纤芯的多模光纤中来泵浦单模光纤。 多模光纤的直径大于单模核。