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11. 发明授权

US06486950B1 Multi-channel wavelength monitor 有权
标题翻译：多声道波长监视器
公开(公告)号：US06486950B1
公开(公告)日：2002-11-26
申请号：US09729876
申请日：2000-12-05
申请人： Timothy C. Munks , Paul Dunn
发明人： Timothy C. Munks , Paul Dunn
IPC分类号： G01N2125
CPC分类号： G02B6/4215 , G01J3/2803 , G02B6/29361 , G02B6/29385 , H04J14/02
摘要： A multi-channel wavelength monitor is described that includes a dispersive element that is positioned in an optical path of an incident optical beam having a plurality of wavelengths. The dispersive element disperses the optical beam into a plurality of optical beams that simultaneously propagate in a plurality of optical paths, where each of the plurality of optical beams has one of the plurality of wavelengths. An optical filter is positioned to intercept each of the plurality of optical paths at a plurality of locations. The optical filter substantially passes a respective one of the plurality of optical beams at a respective one of the plurality of locations and substantially blocks the other optical beams. A plurality of optical detectors is positioned adjacent to the optical filter in a direction of propagation of the plurality of optical beams. A respective one of the plurality of optical detectors is positioned in a respective one of the plurality of optical paths. Each of the plurality of detectors generates an electrical signal that is proportional to an intensity of a respective one of the plurality of optical beams.
摘要翻译：描述了一种多通道波长监视器，其包括位于具有多个波长的入射光束的光路中的色散元件。分散元件将光束分散成多个光束，其同时在多个光路中传播，其中多个光束中的每一个具有多个波长中的一个。光学滤波器被定位成在多个位置处截取多个光路中的每一个。滤光器基本上在多个位置中的相应一个处通过多个光束中的相应一个，并且基本上阻挡其它光束。多个光学检测器位于与滤光器相邻的多个光束的传播方向上。多个光学检测器中的相应一个位于多个光路中的相应一个光路中。多个检测器中的每个检测器产生与多个光束中的相应光束的强度成比例的电信号。

12. 发明授权

US06353623B1 Temperature-corrected wavelength monitoring and control apparatus 有权
标题翻译：温度校正波长监测和控制装置
公开(公告)号：US06353623B1
公开(公告)日：2002-03-05
申请号：US09224960
申请日：1999-01-04
申请人： Timothy C. Munks , Paul E. Dunn , David J. Allie
发明人： Timothy C. Munks , Paul E. Dunn , David J. Allie
IPC分类号： H01S310
CPC分类号： H01S5/0687 , H01S5/0617 , H01S5/0683
摘要： Apparatus and methods for monitoring the wavelength of laser radiation and that provide a temperature-corrected error signal responsive to the deviation of the wavelength of the laser radiation from a nominal wavelength is disclosed. The apparatus includes a least one optical filter for filtering the laser radiation according to at least one spectral filter function to produce filtered laser radiation and at least one optical detector for detecting the filtered laser radiation to produce a first detected signal. The apparatus also includes a temperature sensor for sensing temperature characteristic of at least the optical filter and processing circuitry for providing a temperature-corrected output signal responsive to the deviation of the wavelength of the laser radiation from the nominal wavelength. The processing circuitry includes an error circuit for providing, responsive to at least the first detected signal, an uncorrected error signal responsive the deviation of the wavelength of the laser radiation from the nominal wavelength and a memory for providing offset values corresponding to selected temperatures. The processing circuitry, responsive to the temperature sensor, modifies the uncorrected signal based on at least one offset value to produce the temperature-corrected error signal. The laser wavelength monitoring apparatus can be advantageously combined with a laser and a laser wavelength control to provide a laser having a regulated or tunable wavelength.
摘要翻译：公开了用于监测激光辐射的波长并且响应于激光辐射的波长与标称波长的偏差而提供温度校正的误差信号的装置和方法。该装置包括至少一个光学滤波器，用于根据至少一个光谱滤波器功能对激光辐射进行滤波以产生滤波的激光辐射;以及至少一个光学检测器，用于检测滤波的激光辐射以产生第一检测信号。该装置还包括用于感测至少光学滤波器的温度特性的温度传感器和用于响应于激光辐射的波长与标称波长的偏差而提供温度校正的输出信号的处理电路。所述处理电路包括误差电路，用于响应于至少所述第一检测信号，响应来自所述标称波长的所述激光辐射的波长的偏差以及用于提供对应于所选择的温度的偏移值的存储器来提供未校正的误差信号。响应于温度传感器的处理电路基于至少一个偏移值来修改未校正的信号，以产生温度校正的误差信号。激光波长监测装置可以有利地与激光和激光波长控制组合，以提供具有调节或可调波长的激光。

13. 发明授权

US06134253A Method and apparatus for monitoring and control of laser emission wavelength 失效
标题翻译：用于监测和控制激光发射波长的方法和装置
公开(公告)号：US06134253A
公开(公告)日：2000-10-17
申请号：US025987
申请日：1998-02-19
申请人： Timothy C. Munks , Paul E. Dunn , David J. Allie
发明人： Timothy C. Munks , Paul E. Dunn , David J. Allie
IPC分类号： G02B5/20 , H01S3/13 , H01S5/0687 , H01S3/00
CPC分类号： H01S3/13 , G02B5/20 , H01S5/0687
摘要： An apparatus for monitoring and controlling the wavelength of laser radiation includes at a least one optical filter for receiving laser radiation and for transmitting and reflecting first and second filtered beams, respectively. The beams are filtered according to respective first and second spectral filter functions that cross at least one crossing wavelength. A beam comparing element compares the intensities of the first and second filtered beams and produces an error signal responsive to the deviation of the wavelength of the laser radiation from a set point wavelength. The beam comparing element can include first and second optical detectors and an error circuit for producing the error signal by taking a ratio or the difference of the signals detected by the detectors. Varying the angle of incidence of the laser radiation upon at least one optical filter varies the spectral filter function of that for selecting or varying the operating wavelength of the laser. A laser wavelength controller can receive the error signal for stabilizing or tuning the wavelength of the laser radiation. Several addition embodiments of the invention are disclosed.
摘要翻译：用于监测和控制激光辐射的波长的装置包括在至少一个用于接收激光辐射的光学滤波器和用于分别发射和反射第一和第二滤波光束的至少一个滤光器。根据与至少一个交叉波长交叉的相应的第一和第二频谱滤波器函数对波束进行滤波。光束比较元件比较第一和第二滤波光束的强度，并响应于激光辐射的波长与设定点波长的偏差产生误差信号。光束比较元件可以包括第一和第二光学检测器和用于通过获取由检测器检测的信号的比率或差值来产生误差信号的误差电路。将激光辐射的入射角改变为至少一个滤光器改变用于选择或改变激光器的工作波长的光谱滤波器功能。激光波长控制器可以接收用于稳定或调谐激光辐射波长的误差信号。公开了本发明的几个附加实施例。

14. 发明授权

US5651022A Multi-element monolithic solid state laser 失效
标题翻译：多元件单片固体激光器
公开(公告)号：US5651022A
公开(公告)日：1997-07-22
申请号：US577424
申请日：1995-12-22
申请人： Douglas W. Anthon , Timothy C. Munks
发明人： Douglas W. Anthon , Timothy C. Munks
IPC分类号： H01S3/02 , H01S3/042 , H01S3/06 , H01S3/08 , H01S3/0941 , H01S3/098 , H01S3/16 , H01S3/17
CPC分类号： H01S3/0627 , H01S3/025 , H01S3/082 , H01S3/0404 , H01S3/042 , H01S3/0604 , H01S3/08031 , H01S3/08054 , H01S3/08072 , H01S3/09415 , H01S3/1608 , H01S3/1698 , H01S3/175
摘要： A monolithic solid state laser structure is used to construct erbium lasers that are insensitive to external pressure changes and vibrations, and have improved cooling of the gain medium and reduced thermal lensing effect. In the monolithic laser structure, the gain medium is separated from an optically transmissive plate on one side and a wave plate on the other side by spacers to form narrow air gaps which provide effective cooling of the gain medium and reduced the thermal lensing effect. Such an arrangement is further combined with a pressure-insensitive Brewster polarizer, such as a solid Brewster polarizer or a pressure-sealed Brewster plate, to form a pressure-insensitive laser cavity. The wave plate cooperates with the Brewster polarizer to select the wavelength of the solid state laser.
摘要翻译：采用单片固体激光器结构，对外部压力变化和振动不敏感的铒激光器，增强介质的冷却和热透镜效应的降低。在单片激光器结构中，增益介质通过间隔物从一侧的光学透射板和另一侧的波片分离，以形成狭窄的空气间隙，从而有效地冷却增益介质并降低热透镜效应。这种布置进一步与不受压力的布鲁斯特偏振器（例如，布氏体偏振器或压力密封布鲁斯特板）组合以形成不敏感的激光腔。波片与布鲁斯特偏振器配合选择固态激光器的波长。

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