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1. 发明授权

US5163059A Mode-locked laser using non-linear self-focusing element 失效
标题翻译：使用非线性自聚焦元件的锁模激光器
公开(公告)号：US5163059A
公开(公告)日：1992-11-10
申请号：US697898
申请日：1991-05-09
申请人： Daniel K. Negus , Luis A. Spinelli , Timothy Johnston
发明人： Daniel K. Negus , Luis A. Spinelli , Timothy Johnston
IPC分类号： H01S3/098 , H01S3/16
CPC分类号： H01S3/1112 , H01S3/0805 , H01S2301/085 , H01S3/0014 , H01S3/08 , H01S3/0811 , H01S3/0816 , H01S3/106 , H01S3/1625
摘要： A passively mode-locked laser (110) is disclosed that includes a resonant cavity (112, 114) having a gain medium (116) therein. A transmissive element (116), which may be the gain medium, is also located in the cavity and is formed from a material which varies the two-dimensional, lateral spatial profile of the beam with respect to intensity due to the Kerr effect. The resonator is arranged such that the round trip gain of the system increases with respect to the intensity of the beam so that mode-locking operation can be achieved. In one approach, the variation in the spatial profile is used to increase the extraction of energy from the gain medium. In another approach, the variation in spatial profile which occurs with an increase in intensity is used to decrease the loss in the system so that pulse operation is favored. In an illustrated embodiment, wherein the gain medium (116) is formed from titanium-sapphire, the self-phase modulation of the crystal is also used to compress the pulses into the femtosecond range. In addition, a prism set (136, 138) can be used to balance the group velocity dispersion and self-phase modulation of the gain crystal to achieve stable, soliton-like operation. In the preferred embodiment, mode-locking behavior is initiating by rotating a transmissive optical element (230, 232) located in the cavity in a manner to vary the path length of the beam.
摘要翻译：公开了一种被动模式锁定激光器（110），其包括其中具有增益介质（116）的谐振腔（112,114）。可以是增益介质的透射元件（116）也位于空腔中并且由材料形成，该材料由于克尔效应而相对于强度改变梁的二维横向空间分布。谐振器布置成使得系统的往返增益相对于光束的强度增加，使得可以实现模式锁定操作。在一种方法中，空间分布的变化用于增加从增益介质中提取能量。在另一种方法中，随着强度的增加而发生的空间分布的变化被用于减少系统中的损耗，使脉冲操作受到青睐。在所示的实施例中，其中增益介质（116）由钛 - 蓝宝石形成，晶体的自相位调制也用于将脉冲压缩到飞秒范围内。此外，可以使用棱镜组（136,138）来平衡增益晶体的组速度色散和自相位调制，以实现稳定的孤子状操作。在优选实施例中，通过以改变梁的路径长度的方式旋转位于空腔中的透射光学元件（230,232）来启动锁模行为。

2. 发明授权

US5079772A Mode-locked laser using non-linear self-focusing element 失效
标题翻译：使用非线性自聚焦元件的锁模激光器
公开(公告)号：US5079772A
公开(公告)日：1992-01-07
申请号：US632360
申请日：1990-12-21
申请人： Daniel K. Negus , Luis A. Spinelli
发明人： Daniel K. Negus , Luis A. Spinelli
IPC分类号： H01S3/08 , H01S3/098 , H01S3/16
CPC分类号： H01S3/1112 , H01S2301/085 , H01S3/0014 , H01S3/0805 , H01S3/08072 , H01S3/0811 , H01S3/0816 , H01S3/106 , H01S3/1625
摘要： A passively mode-locked laser (110) is disclosed that includes a resonant cavity (112, 114) having a gain medium (116) therein. A transmissive element (116), which may be the gain medium, is also located in the cavity and is formed from a material which varies the two-dimensional, lateral spatial profile of the beam with respect to intensity due to the Kerr effect. The resonator is arranged such that the round trip gain of the system increases with respect to the intensity of the beam so that mode-locking operation can be achieved. In one approach, the variation in the spatial profile is used to increase the extraction of energy from the gain medium. In another approach, the variation in spatial profile which occurs with an increase inintensity is used to decrease the loss in the system so that pulse operation is favored. In an illustrated embodiment, wherein the gain medium (116) is formed from titanium-sapphire, the self-phase modulation of the crystal is also used to compress the pulses into the femtosecond range. In addition, a prism set (136, 138) can be used to balance the group velocity dispersion and self-modulation of the gain crystal to achieve stable, soliton-like operation.
摘要翻译：公开了一种被动模式锁定激光器（110），其包括其中具有增益介质（116）的谐振腔（112,114）。可以是增益介质的透射元件（116）也位于空腔中并且由材料形成，该材料由于克尔效应而相对于强度改变梁的二维横向空间分布。谐振器布置成使得系统的往返增益相对于光束的强度增加，使得可以实现模式锁定操作。在一种方法中，空间分布的变化用于增加从增益介质中提取能量。在另一种方法中，随着强度增加而发生的空间分布的变化被用于减少系统中的损耗，使脉冲操作受到青睐。在所示的实施例中，其中增益介质（116）由钛 - 蓝宝石形成，晶体的自相位调制也用于将脉冲压缩到飞秒范围内。另外，可以使用棱镜组（136,138）来平衡组速度色散和增益晶体的自调节，以实现稳定的孤子状操作。

3. 发明授权

US5097471A Mode-locked laser using non-linear self-focusing element 失效
标题翻译：使用非线性自聚焦元件的锁模激光器
公开(公告)号：US5097471A
公开(公告)日：1992-03-17
申请号：US741106
申请日：1991-08-06
申请人： Daniel K. Negus , Luis A. Spinelli
发明人： Daniel K. Negus , Luis A. Spinelli
IPC分类号： H01S3/098 , H01S3/16
CPC分类号： H01S3/1112 , H01S3/0014 , H01S3/0805 , H01S3/0811 , H01S3/0816 , H01S3/1625
摘要： A passively mode-locked laser (110) is disclosed that includes a resonant cavity (112, 114) having a gain medium (116) therein. A transmissive element (116), which may be the gain medium, is also located in the cavity and is formed from a material which varies the two-dimensional, lateral spatial profile of the beam with respect to intensity due to the Kerr effect. The resonator is arranged such that the round trip gain of the system increases with respect to the intensity of the beam so that mode-locking operation can be achieved. In one approach, the variation in the spatial profile is used to increase the extraction of energy from the gain medium. In another approach, the variation in spatial profile which occurs with an increase in intensity is used to decrease the loss in the system so that pulse operation is favored. In an illustrated embodiment, wherein the gain medium (116) is formed from titanium-sapphire, the self-phase modulation of the crystal is also used to compress the pulses into the femtosecond range. In addition, a prism set (136, 138) can be used to balance the group velocity dispersion and self-phase modulation of the gain crystal to achieve stable, solution-like operation.
摘要翻译：公开了一种被动模式锁定激光器（110），其包括其中具有增益介质（116）的谐振腔（112,114）。可以是增益介质的透射元件（116）也位于空腔中并且由材料形成，该材料由于克尔效应而相对于强度改变梁的二维横向空间分布。谐振器布置成使得系统的往返增益相对于光束的强度增加，使得可以实现模式锁定操作。在一种方法中，空间分布的变化用于增加从增益介质中提取能量。在另一种方法中，随着强度的增加而发生的空间分布的变化被用于减少系统中的损耗，使脉冲操作受到青睐。在所示的实施例中，其中增益介质（116）由钛 - 蓝宝石形成，晶体的自相位调制也用于将脉冲压缩到飞秒范围内。此外，可以使用棱镜组（136,138）来平衡增益晶体的组速度色散和自相位调制，以实现稳定的解决方案操作。

4. 发明授权

US06770069B1 Laser applicator 有权
标题翻译：激光打标机
公开(公告)号：US06770069B1
公开(公告)日：2004-08-03
申请号：US10177058
申请日：2002-06-21
申请人： James L. Hobart , Daniel K. Negus
发明人： James L. Hobart , Daniel K. Negus
IPC分类号： A61N5067
CPC分类号： A61B18/203 , A61B2018/00023 , A61B2018/00452 , A61B2018/00458
摘要： An applicator is configured with an optical window formed from a first and a second lens section. The applicator is configured for modulating the temperature of a working surface while simultaneously exposing the working surface to a radiation source. The first and the second lens sections form boundaries of a medium cavity for channeling a temperature regulating medium which is preferably a cooled liquid medium. The first lens section has an outer lens and an inner lens which are preferably separated by a distance in the range of 0.1 to 1.0 cm and form boundaries of an insulating region. In a preferred method, a temperature regulating medium is circulated through the medium cavity while exposing a target tissue to laser radiation through the optical window. The insulating region helps reduce fogging of the optical window thereby improving visibility through the window and reducing scattering of the laser radiation. Preferably, the insulating region is under vacuum. Alternatively, the insulating region is configured to channel a second temperature regulating medium. The applicator and system of the instant invention are preferably configured for exposing dermis to a pulsed laser source while simultaneously cooling dermis during procedures to remove hair or treat the cutaneous vascular lesions.
摘要翻译：施加器配置有由第一和第二透镜部分形成的光学窗口。施加器构造成用于调节工作表面的温度，同时将工作表面暴露于辐射源。第一透镜部分和第二透镜部分形成介质腔的边界，用于引导优选冷却的液体介质的温度调节介质。第一透镜部分具有外透镜和内透镜，其优选地分隔在0.1至1.0cm的范围内并形成绝缘区域的边界。在优选的方法中，温度调节介质循环通过介质空腔，同时将目标组织暴露于通过光学窗口的激光辐射。绝缘区域有助于减少光学窗口的雾化，从而提高通过窗口的可视性并减少激光辐射的散射。优选地，绝缘区域处于真空状态。或者，绝缘区域被配置成引导第二温度调节介质。本发明的施用器和系统优选地被配置为将真皮暴露于脉冲激光源，同时在除去毛发或治疗皮肤血管病变的过程期间同时冷却真皮。

5. 发明授权

US5121405A Alignment control system for lasers 失效
标题翻译：激光对准控制系统
公开(公告)号：US5121405A
公开(公告)日：1992-06-09
申请号：US632090
申请日：1990-12-20
申请人： Daniel K. Negus
发明人： Daniel K. Negus
IPC分类号： H01S3/139
CPC分类号： H01S3/139
摘要： Control systems for stabilizing the position of a beam from a laser are disclosed. In one aspect, lateral alignment deviations created by varying thermal effects in a solid state gain medium are compensated. A system is also disclosed which can isolate and the correct both lateral and angular alignment errors.
摘要翻译：公开了用于稳定来自激光束的光束位置的控制系统。在一个方面，通过改变固态增益介质中的热效应产生的横向对准偏差被补偿。还公开了一种可以隔离和校正横向和角度对准误差的系统。

6. 发明授权

US06575964B1 Selective aperture for laser delivery system for providing incision, tissue ablation and coagulation 失效
标题翻译：用于激光输送系统的选择性孔径用于提供切口，组织消融和凝血
公开(公告)号：US06575964B1
公开(公告)日：2003-06-10
申请号：US09498937
申请日：2000-02-04
申请人： James L. Hobart , Daniel K. Negus , Ken Gott , Rene Hugues
发明人： James L. Hobart , Daniel K. Negus , Ken Gott , Rene Hugues
IPC分类号： A61B1818
CPC分类号： A61B18/203 , A61B18/201 , A61B2017/00199 , A61B2017/00761 , A61B2018/00452 , A61B2018/207
摘要： A selective aperture for a laser delivery system for providing incision, ablation and coagulation. A laser crystal disposed between two reflective surfaces forms a laser beam. An aperture member positioned between the laser crystal and one of the reflective surfaces includes a substantially circular aperture for passing the laser beam. The size of the aperture is selectively adjustable. The aperture member has a plurality of apertures of various different sizes and is rotatable about an axis of rotation. The axis of rotation is parallel to the longitudinal axis of the laser crystal. By appropriately rotating the aperture member, a selected one of the apertures is positioned to pass the laser beam. A stepper motor and flexible shaft are utilized for rotating the aperture member. At least one of the apertures is surrounded by a beveled portion of the rotatable member. Alternatively, two lasers with different size fixed apertures could be utilized and directed to a common surface. According to an aspect of the invention, an articulated arm is provided along with one or more refocussing optics for refocussing the laser beam as it travels through the arm. According to another aspect, a second laser source is provided along with a galvanometer for directing each of two laser beams to a surface to be treated. Such an arrangement provides exceptional versatility and control over the beam emitted. According to an another aspect, the aperture for a single laser source is rapidly changed during the performance of a procedure. By rapidly switching between forming an incision and cauterizing, an incision can be cauterized while being made.
摘要翻译：用于激光输送系统的选择性孔径，用于提供切口，消融和凝固。设置在两个反射表面之间的激光晶体形成激光束。位于激光晶体和反射表面之一中的光圈元件包括用于使激光束通过的基本上圆形的孔。光圈的大小可选择性地调节。孔径构件具有多个不同尺寸的孔，并可围绕旋转轴线旋转。旋转轴线平行于激光晶体的纵向轴线。通过适当地旋转孔径构件，所选择的一个孔被定位成使激光束通过。使用步进电机和柔性轴来旋转孔径构件。至少一个孔被可旋转构件的斜切部分包围。或者，可以使用具有不同尺寸的固定孔的两个激光器并且被引导到公共表面。根据本发明的一个方面，铰链臂与一个或多个重聚焦光学器件一起提供，用于当激光束穿过臂时重新聚焦激光束。根据另一方面，第二激光源与检流计一起提供，用于将两个激光束中的每一个引导到待处理的表面。这种布置提供了出色的通用性和对发射的光束的控制。根据另一方面，在执行过程期间，用于单个激光源的孔径快速变化。通过在形成切口和烧灼之间快速切换，可以在制造时切割切口。

7. 发明授权

US5173908A System for automatically adjusting the GVD of a Gires-Tournois interferometer 失效
标题翻译：用于自动调整Gires-Tournois干涉仪GVD的系统
公开(公告)号：US5173908A
公开(公告)日：1992-12-22
申请号：US772481
申请日：1991-10-07
申请人： Daniel K. Negus , Timothy Johnston
发明人： Daniel K. Negus , Timothy Johnston
IPC分类号： H01S3/098 , H01S3/106
CPC分类号： H01S3/1112 , H01S3/1062 , H01S3/105
摘要： A system is described for automatically maintaining the group velocity dispersion (GVD) of a Gires-Tournois interferometer (GTI) as the wavelength of incident light is varied. In the system, the transmission through the GTI is monitored by a photodiode as the wavelength is varied. The transmission through the GTI provides a measure of its GVD. Thus, the output of the photodiode can be used as a control signal for adjusting the GTI in a manner to maintain its GVD at the desired level. The subject system is illustrated in conjunction with a pulsed, tunable, Ti:sapphire laser which is passively mode locked with the optical Kerr effect. The system allows the wavelength of the laser to be tuned over the bandwidth of the gain medium while maintaining a selected level of GVD from the GTI which in turn maintains the desired duration of the pulses. In addition, the GTI is used to compensate for the dispersion effects created by broad band optics in the resonator.
摘要翻译：描述了当入射光的波长变化时自动维持Gires-Tournois干涉仪（GTI）的群速度色散（GVD）的系统。在系统中，当波长变化时，通过光电二极管监测通过GTI的透射。通过GTI的传输提供了其GVD的测量。因此，光电二极管的输出可以用作控制信号，以便以将其GVD保持在期望水平的方式来调节GTI。本系统结合脉冲式可调谐的Ti：蓝宝石激光器进行了说明，该激光器被动地锁定光学克尔效应。该系统允许激光器的波长在增益介质的带宽上进行调谐，同时保持来自GTI的选定电平的GVD，这继而保持脉冲的期望持续时间。此外，GTI用于补偿由谐振器中的宽带光学器件产生的色散效应。

8. 发明授权

US6027256A Composite laser diode enclosure and method for making the same 失效
标题翻译：复合激光二极管外壳及其制作方法
公开(公告)号：US6027256A
公开(公告)日：2000-02-22
申请号：US7173
申请日：1998-01-14
申请人： John Lawrence Nightingale , Matthew Rekow , Daniel K. Negus , Richard D. Cullins , Michael Jay Finander
发明人： John Lawrence Nightingale , Matthew Rekow , Daniel K. Negus , Richard D. Cullins , Michael Jay Finander
IPC分类号： H01S5/022 , H01S5/024 , H01S5/0683 , H01S5/40 , G02B6/42
CPC分类号： H01S5/02208 , H01S5/024 , H01S5/02284 , H01S5/02415 , H01S5/02476 , H01S5/0683 , H01S5/4025
摘要： A composite laser diode enclosure, and a method of making the same, having a first enclosure sealed within a second enclosure. Each enclosure having a thermally conductive base plate, a side wall band attached to the base plate, and a lid attached to the side wall band to hermetically seal each enclosure. The materials forming the side wall band and lids are selected so that high quality metallurgical bonds are formed between the base plates and the side wall bands, and between the side wall bands and the lids. The first enclosure contains a laser diode, coupling optics, and input ends of optical fibers for delivering the laser diode output out of the enclosures. The second enclosure contains the first enclosure, TE coolers, thermistors, and a PC board with an optical detector, E-prom, interlock circuit and voltage protection circuit. Thermistors monitor the temperature of each enclosure. The detector captures stray scattered radiation emanating from the first enclosure to monitor the output power of the laser diode. Sealed electrical and optical connections couple electrical and optical signals into and out of the enclosures while maintaining the hermetic seals of the enclosures.
摘要翻译：复合激光二极管外壳及其制造方法，其具有密封在第二外壳内的第一外壳。每个外壳具有导热基板，附接到基板的侧壁带和附接到侧壁带的盖以密封每个外壳。选择形成侧壁带和盖的材料，使得在基板和侧壁带之间以及侧壁带和盖之间形成高质量的冶金结合。第一个外壳包含激光二极管，耦合光学器件和光纤的输入端，用于将激光二极管输出传送出外壳。第二个外壳包含第一个外壳，TE冷却器，热敏电阻和带有光学检测器，E-prom，互锁电路和电压保护电路的PC板。热敏电阻监控每个外壳的温度。检测器捕获从第一个外壳发出的散射散射的辐射，以监测激光二极管的输出功率。密封的电气和光学连接将电和光信号耦合到外壳中并保持外壳的同时保持外壳的气密密封。

9. 发明授权

US5455837A Flashlamp energy control circuit 失效
标题翻译：闪光灯能量控制电路
公开(公告)号：US5455837A
公开(公告)日：1995-10-03
申请号：US310565
申请日：1994-09-22
申请人： Daniel K. Negus , Jim Chiu , Paul A. Cornelius
发明人： Daniel K. Negus , Jim Chiu , Paul A. Cornelius
IPC分类号： H05B41/34 , H01S3/00
CPC分类号： H05B41/34
摘要： A circuit is disclosed for controlling the output of a flashlamp used to excite a gain medium. The circuit functions to supply energy to the flashlamp for fixed time intervals to generate repetitive pulses having a uniform duration. The circuit includes a photodetector for generating an output signal which is proportional to the light generated by the flashlamp. During a first phase of the fixed interval, the circuit delivers a first voltage level to the flashlamp. At the end of the first phase, a comparison is made between the output of the flashlamp as measured by the photodetector and a target output level. The circuit also initiates a second, boost phase where the voltage supplied to the flashlamp is increased. The length of the boost phase is selected so that at the end of the fixed interval, the total light output generated by the flashlamp is substantially equal to the desired output level.
摘要翻译：公开了一种用于控制用于激发增益介质的闪光灯的输出的电路。电路用于以固定的时间间隔向闪光灯供应能量以产生具有均匀持续时间的重复脉冲。该电路包括用于产生与由闪光灯产生的光成正比的输出信号的光电检测器。在固定间隔的第一阶段期间，电路向闪光灯传送第一电压电平。在第一阶段结束时，通过由光电检测器测量的闪光灯的输出与目标输出电平进行比较。该电路还启动提供给闪光灯的电压增加的第二升压阶段。选择升压阶段的长度，使得在固定间隔结束时，由闪光灯产生的总光输出基本上等于期望的输出电平。

10. 发明授权

US5038360A Birefringent filter for use in a tunable pulsed laser cavity 失效
标题翻译：用于可调脉冲激光腔的双折射滤光片
公开(公告)号：US5038360A
公开(公告)日：1991-08-06
申请号：US361395
申请日：1989-06-05
申请人： Daniel K. Negus , Bernard J. Couillaud
发明人： Daniel K. Negus , Bernard J. Couillaud
IPC分类号： H01S3/08 , H01S3/106
CPC分类号： H01S3/1062 , H01S3/08004
摘要： A birefringent filter ("BRF") unit, for use in the cavity of a tunable pulsed laser generating ultrashort pulses, including means for suppressing satellite pulses resulting from surface reflections. In one preferred embodiment, the inventive BRF has substantially parallel front and back surfaces, and is cut so that its optical axis is not parallel to its front surface. For example, the inventive BRF may be a quartz crystal having a thickness of 3 mm, with its optical axis oriented at an angle substantially equal to 50 degrees from the plane of its front surface. In a second preferred embodiment, the inventive BRF includes a relatively thick, non-birefringent component coupled with index matching material to a relatively thin birefringent component. In a third preferred embodiment, the inventive BRF includes a pair of thick birefringent components designed so that the ordinary ray of the first component becomes the extraordinary ray of the second component. In this third embodiment, the two components preferably have substantially equal birefringence N, and differ in thickness by an amount W chosen so that the overall optical phase shift induced by the inventive BRF is substantially equal to the optical phase shift induced by a conventional single-component BRF having thickness W and birefringence N.
摘要翻译：双折射滤光器（“BRF”）单元，用于产生超短脉冲的可调谐脉冲激光的空腔，包括用于抑制表面反射产生的卫星脉冲的装置。在一个优选实施例中，本发明的BRF具有基本上平行的前表面和后表面，并且被切割成使得其光轴不平行于其前表面。例如，本发明的BRF可以是厚度为3mm的石英晶体，其光轴定向成与其前表面的平面大致相等的50度角。在第二优选实施例中，本发明的BRF包括相对较厚的非折射元件，其与折射率匹配材料耦合到相对较薄的双折射元件。在第三优选实施例中，本发明的BRF包括一对厚双折射组件，其被设计成使得第一组分的普通光线变为第二组分的非凡光线。在该第三实施例中，两个部件优选地具有基本上相等的双折射率N，并且厚度不同，所选择的量W使得由本发明的BRF引起的总的光学相移基本上等于由常规的单折射率引起的光学相移。分量BRF具有厚度W和双折射N.

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