公开(公告)号：US20060039424A1

公开(公告)日：2006-02-23

申请号：US11149780

申请日：2005-06-10

Applicant: Peter Thoma ,  Emmerich Mueller ,  Bernd Nebendahl

Inventor： Peter Thoma ,  Emmerich Mueller ,  Bernd Nebendahl

IPC: H01S3/13

CPC classification number: H01S5/141 ,  H01S5/0687 ,  H01S5/1039

Abstract: A laser apparatus for providing a stabilized multi mode laser beam includes an external cavity for providing an optical path for generating a laser beam which is stimulated by a gain medium, where the external cavity has first spectral characteristics, and a mode-selecting filter positioned within the optical path and having second spectral characteristics. The first characteristics and the second characteristics are adjusted to each other, so that the laser beam has at least two selected modes.

公开(公告)号：US06937346B2

公开(公告)日：2005-08-30

申请号：US10134578

申请日：2002-04-29

Applicant: Bernd Nebendahl ,  Andreas Schmidt ,  Matthias Jaeger

Inventor： Bernd Nebendahl ,  Andreas Schmidt ,  Matthias Jaeger

IPC: G01J3/26 ,  G01J9/02 ,  H01S5/0687 ,  G01B9/02

CPC classification number: G01J9/0246 ,  G01J3/26 ,  H01S5/0687

Abstract: A wavemeter for determining a wavelength of an incident optical beam comprises four optical components, each being arranged in the incident optical beam or in a part of it, providing a path with a respective effective optical length, and generating a respective optical beam with a respective optical power depending on the wavelength of the incident optical beam. The optical powers oscillate periodically with increasing wavelength, and a phase shift of approximately pi/2 is provided between two respective pairs of the four optical components. Respective power detectors are provided, each detecting a respective one of the optical powers. A wavelength allocator is provided for allocating a wavelength to the incident optical beam based on the wavelength dependencies of the detected first, second, third, and fourth optical powers.

Abstract translation: 用于确定入射光束的波长的波长计包括四个光学部件，每个光学部件布置在入射光束中或其一部分中，提供具有相应有效光学长度的路径，并且产生具有相应的 光功率取决于入射光束的波长。 光功率随着波长的增加而周期性地振荡，并且在四个光学部件的两个对之间提供近似π/ 2的相移。 提供了各自的功率检测器，每个功率检测器检测相应的一个光功率。 提供了一种波长分配器，用于基于检测到的第一，第二，第三和第四光功率的波长依赖性向入射光束分配波长。

公开(公告)号：US06795454B2

公开(公告)日：2004-09-21

申请号：US10100975

申请日：2002-03-19

Applicant: Bernd Nebendahl

Inventor： Bernd Nebendahl

IPC: H01S300

CPC classification number: H01S5/141 ,  H01S5/143

Abstract: A method and an apparatus for tuning a laser includes creating a laser with a path between a cavity end element and a tuning element of an external cavity, both being a high reflective or semitransparent mirror, selecting at least one longitudinal mode of the laser by introducing a dispersion element in the path of the laser, rotating the tuning element about a pivot axis theoretically defined by the intersection of the surface planes of the cavity end element, the dispersion element and the tuning element to tune the laser. The method and apparatus also include provisions for moving the dispersion element along such a predetermined path to at least partly compensate a shift between the real position of the pivot axis and the theoretically defined position.

Abstract translation: 用于调谐激光的方法和装置包括：创建具有空腔端元件和外腔的调谐元件之间的路径的激光器，两者都是高反射或半透明镜，通过引入激光器的至少一个纵向模式 在激光路径中的分散元件，使调谐元件围绕理论上由腔体元件，色散元件和调谐元件的表面相交界定的枢转轴线旋转，以调谐激光器。 所述方法和装置还包括用于沿着这样的预定路径移动色散元件以至少部分地补偿枢转轴线的实际位置与理论上限定的位置之间的偏移的设置。

公开(公告)号：US08744277B2

公开(公告)日：2014-06-03

申请号：US13257243

申请日：2009-03-19

Applicant: Bernd Nebendahl

Inventor： Bernd Nebendahl

IPC: H04B10/06

CPC classification number: H04B10/614 ,  H04B10/60

Abstract: An apparatus calibrates an optical downconverter configured to receive an optical input signal at a signal input and an optical reference signal at a reference input, and to provide at multiple output nodes characterizing signals for characterizing the optical input signal. The downconverter includes receivers having corresponding optical inputs and respectively providing the characterizing signals at the output nodes, and multiple optical signal paths connected between one of the signal and reference inputs and one of the optical inputs. The apparatus includes a signal analyzing unit coupled to the output nodes and configured to receive and analyze the characterizing signals, a first switch for selectively enabling the optical input signal, and a second switch for selectively enabling the reference signal. The signal analyzing unit is configured to derive correction values based on determined signals at the output nodes derived from selectively enabling at least one of the optical input signal and the reference signal, and to correct the characterizing signals with the derived correction values.

Abstract translation: 一种装置校准配置成在信号输入处接收光输入信号并在参考输入处接收光参考信号的光下变换器，并且在多个输出节点处提供表征用于表征光输入信号的信号。 下变频器包括具有对应的光输入并且分别在输出节点处提供表征信号的接收器以及连接在信号参考输入之一和光输入之一的多个光信号路径。 该装置包括耦合到输出节点并被配置为接收和分析特征信号的信号分析单元，用于选择性地启用光输入信号的第一开关和用于选择性地启用参考信号的第二开关。 信号分析单元被配置为基于从选择性地启用光输入信号和参考信号中的至少一个导出的输出节点处的确定的信号导出校正值，并且用导出的校正值来校正表征信号。

公开(公告)号：US20090003403A1

公开(公告)日：2009-01-01

申请号：US12070150

申请日：2008-02-14

Applicant: Bernd Nebendahl

Inventor： Bernd Nebendahl

IPC: H01S3/083

CPC classification number: H01S5/141 ,  G02B5/12 ,  G02B27/4294 ,  H01S3/08059 ,  H01S3/083 ,  H01S3/1055 ,  H01S5/143

Abstract: A ring laser arrangement adapted for providing an optical beam travelling on an optical path representing a closed loop, includes a laser gain medium coupled into the optical path for amplifying the optical beam by stimulated emission, and a wavelength filter coupled into the optical path for providing a wavelength selection to the optical beam travelling along the optical path. A reverse beam travelling in one direction of the optical path is utilized for controlling at least one property of a forward beam travelling in an opposite direction of the optical path.

Abstract translation: 适于提供在表示闭环的光路上行进的光束的环形激光装置包括耦合到用于通过受激发射放大光束的光路中的激光增益介质，以及耦合到光路中的波长滤波器，用于提供 对沿光路行进的光束的波长选择。 利用沿光路的一个方向行进的反向光束来控制沿光路的相反方向传播的前向光束的至少一个特性。

公开(公告)号：US20080231861A1

公开(公告)日：2008-09-25

申请号：US12064347

申请日：2005-08-24

Applicant: Bernd Nebendahl

Inventor： Bernd Nebendahl

IPC: G01B9/02 ,  G02F1/00

CPC classification number: G02B6/29352 ,  G02B6/2746 ,  G02B6/278 ,  G02B6/2861 ,  G02B6/29353 ,  G02B6/29376 ,  H01S3/06791 ,  H01S5/1071 ,  H01S5/146

Abstract: The invention relates to a polarization maintaining optical delay circuit (1) for providing a time delay to an incident light (S1), comprising an optical directional element (11) adapted for directing an incident light (S1) from a first port (111) to a second port (112) and directing a returning light from the second port to a third port (113), a mirror element (12) adapted for reflecting the incident light (S1), thereby changing the polarization state, so that the returning light (S2) has a substantially orthogonal polarization state compared to the polarization state of the incident light (S1), and an optical waveguide (13) adapted for optically connecting the second port (112) of the optical directional element (11) and the mirror element (12). The invention also relates to a ring cavity (2,3) comprising such an optical delay circuit, and an optical interferometer (4,5) with said optical delay circuit.

Abstract translation: 本发明涉及一种用于向入射光（S1）提供时间延迟的偏振维持光学延迟电路（1），包括适于将入射光（S1）从第一端口（S1）引导的光学方向元件（11） 111）连接到第二端口（112）并且将来自第二端口的返回光引导到第三端口（113），适于反射入射光（S 1）的镜元件（12），从而改变偏振状态，因此 返回光（S 2）与入射光的偏振状态（S1）相比具有基本上正交的偏振状态，并且适于光学连接光学方向元件的第二端口（112）的光波导（13） （11）和镜元件（12）。 本发明还涉及包括这种光学延迟电路的环形腔（2,3）以及具有所述光学延迟电路的光学干涉仪（4,5）。

公开(公告)号：US07397543B2

公开(公告)日：2008-07-08

申请号：US11444085

申请日：2006-05-31

Applicant: Bernd Nebendahl

Inventor： Bernd Nebendahl

IPC: G01N21/00

CPC classification number: G01M11/3172 ,  G01M11/3109

Abstract: Determining a physical property of a device under test—DUT—includes receiving an optical scatter signal returning from the DUT in response to a probe signal launched into the DUT, wavelength dependent separating a first response signal and a second response signal from the scatter signal, determining a first power information of the first response signal and a second power information of the second response signal, time-adjusting the first power response and the second power response to each other in order to compensate a group velocity difference between the first response signal and the second response signal within the DUT, and determining the physical property on the base of the time-adjusted power responses.

Abstract translation: 确定被测器件的物理特性包括：响应于发射到DUT中的探测信号接收从DUT返回的光散射信号，波长依赖性分离第一响应信号和来自散射信号的第二响应信号， 确定第一响应信号的第一功率信息和第二响应信号的第二功率信息，将第一功率响应和第二功率响应相互调时，以补偿第一响应信号和 DUT内的第二响应信号，以及基于时间调整的功率响应确定物理特性。

公开(公告)号：US07106450B2

公开(公告)日：2006-09-12

申请号：US10641781

申请日：2003-08-15

Applicant: Thomas Jensen ,  Bernd Nebendahl ,  Ruediger Maestle

Inventor： Thomas Jensen ,  Bernd Nebendahl ,  Ruediger Maestle

IPC: G01B9/02

CPC classification number: G01M11/331

Abstract: For determining a signal response characteristic of a device, a first signal is varied with a first function of time and simultaneously a second signal is varied with a second function of time, wherein the first function is different from the second function. The first and second signals are coupled to the device, wherein the device is exposed to a time-dependent disturbance signal. A signal response is received from the device in response to the first and second signals and the time-dependent disturbance signal. The signal response characteristic is derived by analyzing the received signal response in conjunction with the first and second signals, or a signal derived therefrom, and at least partially removing the time-dependent disturbance signal using the received signal response and the first and second signals, or a signal derived therefrom.

Abstract translation: 为了确定装置的信号响应特性，第一信号随着时间的第一函数而变化，同时第二信号随着时间的第二函数而变化，其中第一功能不同于第二功能。 第一和第二信号耦合到器件，其中器件暴露于时间相关的干扰信号。 响应于第一和第二信号和时间相关的干扰信号，从设备接收信号响应。 信号响应特性是通过结合第一和​​第二信号或从其导出的信号分析接收信号响应而导出的，并且至少部分地使用接收到的信号响应和第一和第二信号去除时间相关的干扰信号， 或从其衍生的信号。

公开(公告)号：US07075957B2

公开(公告)日：2006-07-11

申请号：US10713313

申请日：2003-11-14

Applicant: Ulrich Kallmann ,  Bernd Nebendahl ,  Wolf Steffens ,  Emmerich Mueller ,  Hansjoerg Haisch ,  Jochen Schwarz

Inventor： Ulrich Kallmann ,  Bernd Nebendahl ,  Wolf Steffens ,  Emmerich Mueller ,  Hansjoerg Haisch ,  Jochen Schwarz

IPC: H01S3/13 ,  H03L7/00 ,  H03B21/00

CPC classification number: H04B10/504 ,  H01S5/0687 ,  H04B10/572

Abstract: An apparatus and method of controlling an optical signal includes superimposing at least one optical reference signal and the optical signal to obtain at least one interference signal having an actual beat frequency, and pre-selecting one or more of the at least one interference signals using a predetermined bandwidth and a filter characteristic that is asymmetric with respect to an actual frequency of the optical signal, to determine a position of the optical signal relative to the at least one optical reference signal.

Abstract translation: 控制光信号的装置和方法包括叠加至少一个光参考信号和光信号以获得具有实际拍频的至少一个干扰信号，并且使用一个或多个干扰信号预选择一个或多个干扰信号 预定带宽和相对于光信号的实际频率不对称的滤波器特性，以确定光信号相对于至少一个光参考信号的位置。

公开(公告)号：US20060119857A1

公开(公告)日：2006-06-08

申请号：US10530934

申请日：2002-10-11

Applicant: Wolf Steffens ,  Ulrich Kallmann ,  Bernd Nebendahl ,  Emmerich Mueller ,  Ralf Haeussler

Inventor： Wolf Steffens ,  Ulrich Kallmann ,  Bernd Nebendahl ,  Emmerich Mueller ,  Ralf Haeussler

IPC: G01B9/02

CPC classification number: G01J9/0246 ,  G01B9/02004 ,  G01B9/02007 ,  G01B9/0207 ,  G01B2290/45 ,  G01B2290/60 ,  G01B2290/70 ,  G01J2009/0261

Abstract: An apparatus and to a method of monitoring an interferometer, comprising the steps of: coupling a first optical signal into the interferometer and into a wavelength reference element, detecting a first resulting interference signal being a result of interference of parts of the first optical signal in the interferometer, detecting a resulting reference signal of the wavelength reference element, the resulting reference signal being a result of interaction of the first optical signal with the wavelength reference element, and comparing the first resulting interference signal with the resulting reference signal to detect a drift of the interferometer, if any.

Abstract translation: 一种监测干涉仪的装置和方法，包括以下步骤：将第一光信号耦合到干涉仪中并进入波长参考元件，检测作为第一光信号部分干扰的结果的第一结果干扰信号 所述干涉仪检测所述波长参考元件的参考信号，所得到的参考信号是所述第一光信号与所述波长参考元件相互作用的结果，以及将所述第一结果干扰信号与所得到的参考信号进行比较以检测漂移 的干涉仪，如果有的话。