公开(公告)号：US20060279730A1

公开(公告)日：2006-12-14

申请号：US11447974

申请日：2006-06-07

Applicant: Tsuyoshi Konishi

Inventor： Tsuyoshi Konishi

IPC: G01J3/00 ,  G01J3/06

CPC classification number: G01J11/00

Abstract: There is provided a chirp indicator of ultrashort optical pulse in which a target ultrashort optical pulse is introduced into a spatial filter formed of a hologram in which is recorded information of chirp quantity of an ultrashort optical pulse used as a reference. The chirp indicator identifies the chirp quantity of the ultrashort optical pulse by detecting an optical correlation between the target ultrashort optical pulse and the ultrashort optical pulse used as a reference. Here, the ultrashort optical pulse to be detected is detected for each hologram, and depending on intensity of an amplitude of light emitted from each hologram, a composition ratio of chirp quantity corresponding to each hologram is deteremined. Then, based on the determined mixture ratio of the chirp quantity, chirp quantity of the ultrashort optical pulse to be detected is determined.

Abstract translation: 提供了一种超短光脉冲的啁啾指示器，其中将目标超短光脉冲引入由全息图形成的空间滤波器，其中记录了用作基准的超短光脉冲的啁啾量的信息。 啁啾指示器通过检测目标超短光脉冲和用作基准的超短光脉冲之间的光学相关性来识别超短光脉冲的啁啾量。 这里，针对每个全息图检测要检测的超短光脉冲，并且根据从每个全息图发射的光的振幅的强度，确定与每个全息图对应的啁啾量的组成比。 然后，基于确定的啁啾量的混合比，确定要检测的超短光脉冲的啁啾量。

公开(公告)号：US20050057751A1

公开(公告)日：2005-03-17

申请号：US10918286

申请日：2004-08-13

Applicant: Harald Schenk ,  Heinrich Grueger

Inventor： Harald Schenk ,  Heinrich Grueger

IPC: G01J3/06 ,  G01J3/28

CPC classification number: G01J3/06

Abstract: The invention is based on the knowledge that the quasi-static deflection of a dispersive element can also be obtained in a miniaturization, in that a higher degree of insusceptibility against vibration and shock can be obtained when a suspension is used for the dispersive element, which biases the same into a resting position, as well as for the deflection a means for holding the dispersive element in a deflected position, such that an equilibrium of powers is established between the holding force and the biasing force. In that way, after shock and vibration, the dispersive element always returns to the position defined by the holding force. Therefore, an inventive spectrometer comprises a dispersive element for spectrally decomposing a light beam, whose spectral distribution is to be determined, into spectral components, as well as a suspension for supporting the dispersive element and for biasing the same into a resting position with a biasing force, when the dispersive element is in a deflected position. A control means controls a holding means to vary the deflected position, so that different spectral components become detectable for a detector of the spectrometer.

Abstract translation: 本发明是基于以下知识：分散元件的准静态偏转也可以在小型化中获得，因为当悬浮液用于分散元件时，可以获得更高程度的对振动和冲击的不敏感性，其中 将其偏压到静止位置，以及偏转中用于将分散元件保持在偏转位置的装置，使得在保持力和偏压力之间建立功率平衡。 以这种方式，在冲击和振动之后，色散元件总是返回到由夹持力限定的位置。 因此，本发明的光谱仪包括用于将其光谱分布被确定的光束光谱分解成光谱分量的分散元件，以及用于支撑色散元件并将其偏置到静止位置的悬架，其具有偏压 当分散元件处于偏转位置时。 控制装置控制保持装置来改变偏转位置，使得对于光谱仪的检测器可以检测不同的光谱分量。

公开(公告)号：US06128078A

公开(公告)日：2000-10-03

申请号：US502758

申请日：2000-02-11

Applicant: William G. Fateley

Inventor： William G. Fateley

IPC: G01J3/02 ,  G01J3/06 ,  G01J3/10 ,  G01J3/18 ,  G01J3/28 ,  G01J3/32 ,  G01J3/457 ,  G01N21/39 ,  G02B26/08 ,  G02B27/10

CPC classification number: G01J3/02 ,  G01J3/0218 ,  G01J3/0229 ,  G01J3/027 ,  G01J3/06 ,  G01J3/10 ,  G01J3/18 ,  G01J3/2823 ,  G01J3/2889 ,  G01J3/32 ,  G01J3/457 ,  G02B26/0841 ,  G02B27/1086 ,  G01J2003/2866 ,  G01N2021/393 ,  G01N2021/6463 ,  G01N21/39

Abstract: A spectrometer (10) includes a two-dimensional array of modulatable micro-mirrors (18), a detector (20), and an analyzer (22). The array of micro-mirrors is positioned for receiving individual radiation components forming a part of an input radiation source. The micro-mirrors are modulated at different modulation rates in order to reflect individual radiation components therefrom at known and different modulation rates. The micro-mirror array combines a number of the reflected individual radiation components and reflects the combined components to the detector. The detector is oriented to receive the combined radiation components reflected from the array and is operable to create an output signal representative thereof. The analyzer is operably coupled with the detector to receive the output signal and to analyze at least some of the individual radiation components making up the combined reflection. By using a micro-mirror that receives individual radiation components and then modulates the radiation components at different rates, all of the radiation components can be focused onto a single detector to maximize the signal-to-noise ratio of the detector. A variable band pass filter spectrometer, variable band reject filter spectrometer, variable multiple band pass filter spectrometer, and a variable multiple band reject filter spectrometer utilizing the same invention are also disclosed.

公开(公告)号：US6118530A

公开(公告)日：2000-09-12

申请号：US313180

申请日：1999-05-18

Applicant: Oleg Bouevitch ,  Paul Colbourne

Inventor： Oleg Bouevitch ,  Paul Colbourne

IPC: G01J3/28 ,  G01J9/00 ,  G01J3/06 ,  G01J3/10 ,  G01J3/18

CPC classification number: G01J9/00 ,  G01J3/28

Abstract: A reference system for an optical wavelength scanner, used for measuring wavelengths of radiation from an optical device. The system utilizes a wavelength reference comprising a fixed fiber Fabry-Perot (FFP) filter in combination with a reference fiber Bragg grating (FBG) having an accurately known reflection wavelength to minimize the effects of drift and non-linearities in the scanner and to allow a simple flexure element to be used to position a dispersive grating. The wavelengths of the reference comb of the fixed FFP are determined by reference to that of the reference FBG. Then, the peaks or notches in the light intensity from the device under test are located with respect to the comb of peaks produced by the reference. In a most simple embodiment two ports are coupled so as to provide their output light to the dispersive element simultaneously and only a single collimating lens is required for collimating light from the output ports.

Abstract translation: 用于光学波长扫描器的参考系统，用于测量来自光学装置的辐射波长。 该系统利用包括固定光纤Fabry-Per + E，cir o + EE t（FFP）滤波器和具有精确已知反射波长的参考光纤布拉格光栅（FBG）的波长参考，以最小化漂移和非漂移的影响 并且允许使用简单的挠曲元件来定位分散光栅。 固定FFP的参考梳的波长通过参考FBG的波长来确定。 然后，来自被测器件的光强度中的峰或凹槽相对于由参考产生的峰的梳子定位。 在最简单的实施例中，两个端口被耦合以便同时向色散元件提供它们的输出光，并且仅需要一个准直透镜来准直来自输出端口的光。

公开(公告)号：US6081332A

公开(公告)日：2000-06-27

申请号：US217842

申请日：1998-12-22

Applicant: Manabu Kojima

Inventor： Manabu Kojima

IPC: G01J3/06 ,  G01J3/18

CPC classification number: G01J3/06 ,  G01J3/18

Abstract: A monochromator including an incident portion upon which light to be measured is made incident; a first lens for converting the incident light to be measured into parallel rays of light; a diffraction grating for receiving the light to be measured converted into the parallel rays of light and for outputting the light at an angle which differs depending on wavelength; a second lens for condensing the output light outputted from the diffraction grating at a certain angle; an output portion for outputting the output light thus condensed; and an angle changing device for making variable at least a relative angle between the diffraction grating and the second lens by one of rotation of the diffraction grating and movement of arrangement of the first and second lenses centering around the diffraction grating.

Abstract translation: 包括入射部分的单色仪，使入射光被测量; 用于将待测量的入射光转换为平行光线的第一透镜; 衍射光栅，用于将待测光转换成平行光，并以与波长不同的角度输出光; 第二透镜，用于以一定角度聚焦从衍射光栅输出的输出光; 输出部分，用于输出如此冷凝的输出光; 以及角度改变装置，用于通过衍射光栅的旋转和围绕衍射光栅的第一和第二透镜的布置的移动来使衍射光栅和第二透镜之间的至少相对角度变化。

公开(公告)号：US6046808A

公开(公告)日：2000-04-04

申请号：US289482

申请日：1999-04-09

Applicant: William G. Fateley

Inventor： William G. Fateley

IPC: G01J3/02 ,  G01J3/06 ,  G01J3/18 ,  G01J3/28

CPC classification number: G01J3/02 ,  G01J3/0218 ,  G01J3/0229 ,  G01J3/027 ,  G01J3/06 ,  G01J3/18 ,  G01J3/2823 ,  G01J3/2889 ,  G01J2003/2866

Abstract: A spectrometer (10) includes a two-dimensional array of modulatable micro-mirrors (18), a detector (20), and an analyzer (22). The array of micro-mirrors is positioned for receiving individual radiation components forming a part of an input radiation source. The micro-mirrors are modulated at different modulation rates in order to reflect individual radiation components therefrom at known and different modulation rates. The micro-mirror array combines a number of the reflected individual radiation components and reflects the combined components to the detector. The detector is oriented to receive the combined radiation components reflected from the array and is operable to create an output signal representative thereof. The analyzer is operably coupled with the detector to receive the output signal and to analyze at least some of the individual radiation components making up the combined reflection. By using a micro-mirror that receives individual radiation components and then modulates the radiation components at different rates, all of the radiation components can be focused onto a single detector to maximize the signal-to-noise ratio of the detector. A variable band pass filter spectrometer, variable band reject filter spectrometer, variable multiple band pass filter spectrometer, and a variable multiple band reject filter spectrometer utilizing the same invention are also disclosed.

公开(公告)号：US5978391A

公开(公告)日：1999-11-02

申请号：US896384

申请日：1997-07-18

Applicant: Palash P. Das ,  Richard L. Sandstrom ,  Igor Fomenkov

Inventor： Palash P. Das ,  Richard L. Sandstrom ,  Igor Fomenkov

IPC: G01M11/00 ,  G01J3/02 ,  G01J3/06 ,  G01J9/00 ,  G03F7/20 ,  H01S3/00 ,  H01S3/03 ,  H01S3/034 ,  H01S3/13 ,  H01S3/134 ,  H01S3/137 ,  H01S3/139 ,  H01S3/225

CPC classification number: H01S3/1303 ,  G01J9/00 ,  G03F7/70025 ,  G03F7/70041 ,  G03F7/70558 ,  G03F7/70575 ,  H01S3/03 ,  H01S3/134 ,  H01S3/225 ,  H01S3/1392

Abstract: The preferred embodiment of the invention uses known atomic or molecular absorptions as absolute wavelength standards for calibrating wavelength measurement instruments used in tunable lasers. Examples of atomic and molecular absorptions are carbon and molecular oxygen that have absorptions including 193.0905 nm and 193.2728 nm, respectively, for use with a tunable Argon Fluoride excimer laser at approximately 193 nm. A wavelength measuring device (e.g., a wavemeter) is equipped with a gas cell containing the absorption gas. During a calibration procedure, the wavelength measured by the wavemeter is compared to the atomic or molecular absorption. The wavemeter's calibration constants are then adjusted accordingly to match the wavemeter's output to the atomic or molecular absorption wavelength. Such calibration procedures, therefore, calibrate the wavemeter to absolute standards and correct for any drift in the wavemeter that may occur between calibrations. Some gases, such as molecular oxygen, have multiple molecular absorptions within the tunable range of the laser. The use of multiple absorptions during calibration procedure enhances the precision of the procedure due to the proximity of an absorption line to the final wavelength of interest. After calibration, the laser is tuned to the final wavelength of interest using the calibrated wavemeter.

Abstract translation: 本发明的优选实施方案使用已知的原子或分子吸收作为用于校准可调激光器中使用的波长测量仪器的绝对波长标准。 原子和分子吸收的实例是碳和分子氧，它们分别具有包括193.0905nm和193.2728nm的吸收，用于在约193nm的可调谐氩化物准分子激光器。 波长测量装置（例如波分计）装备有包含吸收气体的气室。 在校准过程中，将波分计测得的波长与原子或分子吸收进行比较。 然后相应调整波形计的校准常数，以将波长计的输出与原子或分子吸收波长相匹配。 因此，这种校准程序将波形计校准为绝对标准，并校正校准之间可能发生的波长计中的任何漂移。 一些气体，如分子氧，在激光器的可调谐范围内具有多个分子吸收。 在校准过程中使用多重吸收增加了由于吸收线与感兴趣的最终波长的接近而导致的程序精度。 校准后，使用校准波长计将激光器调谐到感兴趣的最终波长。

公开(公告)号：US5969812A

公开(公告)日：1999-10-19

申请号：US545448

申请日：1995-10-18

Applicant: David R. Carver

Inventor： David R. Carver

IPC: G01J3/02 ,  G01J3/06 ,  G01J3/28

CPC classification number: G01J3/02 ,  G01J3/0218 ,  G01J3/0243 ,  G01J3/06 ,  G01J2003/2866

Abstract: A spectrophotometer measures optical absorption of light by a sample received in a sample cell. An array of optical elements disperses the light over a spectral pattern, and a fiber optic beam splitter splits light at a selected spectral band into a reference component and a test component. Detectors measure the intensity of the reference component and the test component after the test component passes through the sample. The fiber optic beam splitter includes a plurality of strands arranged with first ends terminating in a common circular area. Opposite ends of peripheral strands are collected into a first set that transmits the test component while the remaining strands for a second set that transmits the reference component. Preferably, there is a single, central, large strand surrounded by smaller strands. Two emitters are provided for light of two different types, such as visible and UV. The optical array forms a collimated beam having an inner core of one type of light and an outer shell of the other. Specially constructed optical elements then reflect and refract the collimated beam. A motor drives a mirror to scan the beam across an optical slit positioned in front of the beam splitter to select a desired spectral band.

Abstract translation: 分光光度计测量样品池中接收的样品的光吸收光。 光学元件的阵列将光分散在光谱图案上，并且光纤光束分束器将选定光谱带上的光分成参考部件和测试部件。 检测器在测试组件通过样品后测量参考组件和测试组件的强度。 光纤分束器包括多个绞合线，第一端部终止于共同的圆形区域。 外围股线的相对端被收集到第一组中，第一组传递测试组件，而第二组的另一组则传输参考组件。 优选地，存在由较小的股线包围的单个中央的大股。 提供两种发射器用于两种不同类型的光，例如可见光和UV。 光学阵列形成具有一种类型的光的内核和另一种类型的外壳的准直光束。 特别构造的光学元件然后反射并折射准直光束。 电动机驱动反射镜以横跨位于分束器前方的光学狭缝扫描光束以选择期望的光谱带。

公开(公告)号：US5963320A

公开(公告)日：1999-10-05

申请号：US93713

申请日：1998-06-08

Applicant: Neil H. Brooks ,  Sergey N. Tugarinov ,  Nicolae N. Naumenko ,  Torkil H. Jensen ,  Daniel Finkenthal

Inventor： Neil H. Brooks ,  Sergey N. Tugarinov ,  Nicolae N. Naumenko ,  Torkil H. Jensen ,  Daniel Finkenthal

IPC: G01J3/06 ,  G01J3/20 ,  G01J3/28 ,  G01J3/457 ,  G01J3/18

CPC classification number: G01J3/06 ,  G01J3/20 ,  G01J3/457 ,  G01J2003/2866 ,  G01J3/0202 ,  G01J3/021 ,  G01J3/0229 ,  G01J3/0294

Abstract: A grating spectrometer employing digital control of an oscillating component (a mirror) and phase-locked digital recording of the intensity profile within the narrow spectral domain defined by an oscillation frequency. Flexible choice of oscillation frequency permits measurement in a quiet region of the noise spectrum. Reference waveforms acquired with the same insturment can be stored and later used to deconvolute a more complex spectrum. The use of multiple detector/slit combinations along a Rowland circle makes the spectrometer sensitive to specific atomic elements.

Abstract translation: 光栅光谱仪采用振荡分量（反射镜）的数字控制和由振荡频率限定的窄谱域内的强度分布的锁相数字记录。 振荡频率的灵活选择允许在噪声谱的安静区域进行测量。 可以存储使用相同装置获得的参考波形，并且稍后用于对更复杂的频谱进行解卷积。 沿Rowland圆圈使用多个探测器/狭缝组合使得光谱仪对特定的原子元素敏感。

公开(公告)号：US5949544A

公开(公告)日：1999-09-07

申请号：US115211

申请日：1998-07-14

Applicant: Christopher J. Manning

Inventor： Christopher J. Manning

IPC: G01B9/02 ,  G01J3/02 ,  G01J3/06 ,  G01J3/28 ,  G01J3/45 ,  G01J9/02

CPC classification number: G01J9/0215 ,  G01J3/02 ,  G01J3/0202 ,  G01J3/06 ,  G01J3/2889 ,  G01J3/45

Abstract: A spectrometer includes an actuator assembly, a mobile mirror assembly responsive to the actuator assembly, a balancing element responsive to the mobile mirror assembly, and a suspension mechanism operatively connected between the mobile mirror assembly, the balancing element and an optical support element in a relative position that isolates substantially all forces arising out of the actuation by the actuator assembly of the mobile mirror assembly and the balancing element.

Abstract translation: 光谱仪包括致动器组件，响应于致动器组件的移动反射镜组件，响应于移动反射镜组件的平衡元件，以及可操作地连接在移动反射镜组件，平衡元件和相对的光学支撑元件之间的悬架机构 位置，其通过移动镜组件和平衡元件的致动器组件基本上分离由致动产生的所有力。