公开(公告)号：US09153928B2

公开(公告)日：2015-10-06

申请号：US12895127

申请日：2010-09-30

Applicant: Martin Fermann ,  Ingmar Hartl ,  Axel Ruehl

Inventor： Martin Fermann ,  Ingmar Hartl ,  Axel Ruehl

IPC: H01S3/067 ,  G01J3/45 ,  G01N21/31 ,  G01N21/3581 ,  G01N21/47 ,  G01N21/63 ,  G01N21/65 ,  H01S3/11 ,  G01N21/35 ,  H01S3/105 ,  H01S3/106 ,  H01S3/107

CPC classification number: H01S3/1106 ,  G01J3/10 ,  G01J3/45 ,  G01J2003/102 ,  G01N21/31 ,  G01N21/3581 ,  G01N21/4795 ,  G01N21/636 ,  G01N21/65 ,  G01N2021/3595 ,  H01S3/067 ,  H01S3/105 ,  H01S3/1068 ,  H01S3/107 ,  H01S3/1115

Abstract: The invention relates to scanning pulsed laser systems for optical imaging. Coherent dual scanning laser systems (CDSL) are disclosed and some applications thereof. Various alternatives for implementation are illustrated. In at least one embodiment a coherent dual scanning laser system (CDSL) includes two passively modelocked fiber oscillators. In some embodiments an effective CDSL is constructed with only one laser. At least one embodiment includes a coherent scanning laser system (CSL) for generating pulse pairs with a time varying time delay. A CDSL, effective CDSL, or CSL may be arranged in an imaging system for one or more of optical imaging, microscopy, micro-spectroscopy and/or THz imaging.

Abstract translation: 本发明涉及用于光学成像的扫描脉冲激光系统。 公开了相干双扫描激光系统（CDSL）及其一些应用。 示出了用于实现的各种替代方案。 在至少一个实施例中，相干双扫描激光系统（CDSL）包括两个被动锁模光纤振荡器。 在一些实施例中，仅使用一个激光器构造有效的CDSL。 至少一个实施例包括用于产生具有时变时间延迟的脉冲对的相干扫描激光系统（CSL）。 用于光学成像，显微镜，微光谱和/或THz成像中的一种或多种的CDSL，有效的CDSL或CSL可以被布置在成像系统中。

公开(公告)号：US09116047B2

公开(公告)日：2015-08-25

申请号：US14052618

申请日：2013-10-11

Applicant: LI-COR, Inc.

Inventor： Serguei Koulikov

IPC: G01J3/45 ,  G01J3/42

CPC classification number: G01J3/027 ,  G01J3/42 ,  G01J3/45 ,  G01N21/41 ,  G01N2021/391 ,  G01N2021/399

Abstract: Systems and methods for controlling the optical path length between a feedback enabled laser and a cavity, and hence the optical feedback phase. A phasor element, positioned along an optical path between the laser and the cavity coupling mirror, includes a gas medium within a volume defined by the phasor element. The phasor element is configured to adjust or control an optical path length of the laser light between the laser and the cavity coupling mirror by adjusting or controlling a density of the gas medium within the phasor volume.

Abstract translation: 用于控制反馈使能的激光器和空腔之间的光程长度的系统和方法，并因此控制光学反馈阶段。 沿着激光器和腔耦合镜之间的光路定位的相量元件包括由相量元件限定的体积内的气体介质。 相量元件被配置为通过调节或控制相量体积内的气体介质的密度来调节或控制激光和腔耦合反射镜之间的激光的光路长度。

公开(公告)号：US20150192467A1

公开(公告)日：2015-07-09

申请号：US14417968

申请日：2013-08-01

Applicant: INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE

Inventor： Gargi Sharma ,  Kanwarpal Singh ,  Roberto Morandotti ,  Tsuneyuki Ozaki

IPC: G01J3/45 ,  G01J3/10

CPC classification number: G01J3/45 ,  G01J3/108 ,  G01J3/453 ,  G01J11/00

Abstract: A method and system based on spectral domain interferometry for detecting intense THz electric field, allowing the use of thick crystal for spectroscopic purposes, in order to makes long temporal scans for increased spectral resolutions, and overcoming the limitation of over-rotation for presently available high power THz sources. Using this method and system the phase difference of approximately 8898π can be measured, which is 18000 times higher than the phase difference measured by electro-optic sampling (π/2).

Abstract translation: 一种基于频域干涉测量的方法和系统，用于检测强烈的THz电场，允许使用厚晶体进行光谱目的，以便对增加的光谱分辨率进行长时间扫描，并克服当前可用高度的过度旋转的限制 功率太赫兹源。 使用这种方法和系统，相位差约为8898＆pgr; 可以测量，比通过电光采样（＆pgr / 2）测量的相位差高18000倍。

公开(公告)号：US20150131101A1

公开(公告)日：2015-05-14

申请号：US14400686

申请日：2013-05-08

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takashi Kasahara ,  Katsumi Shibayama

IPC: G01J3/26 ,  G01J3/45

CPC classification number: G01J3/26 ,  G01J3/0259 ,  G01J3/0291 ,  G01J3/36 ,  G01J3/45

Abstract: A spectroscopic sensor 1A comprises an interference filter unit 20A having a cavity layer 21 and first and second mirror layers 22, 23 and a light detection substrate 30 having a light-receiving surface 32a for receiving light transmitted through the interference filter unit 20A. The interference filter unit 20A has a first filter region 24 corresponding to the light-receiving surface 32a and a ring-shaped second filter region 25 surrounding the first filter region 24. The distance between the first and second mirror layers 22, 23 varies in the first filter region 24 and is fixed in the second filter region 25.

Abstract translation: 分光传感器1A包括具有空腔层21和第一和第二镜层22,23的干涉滤光器单元20A和具有用于接收透过干涉滤光器单元20A的光的光接收表面32a的光检测基板30。 干涉滤光器单元20A具有对应于光接收表面32a的第一滤光区域24和围绕第一滤光区域24的环形第二滤光区域25.第一和第二镜层22,23之间的距离在 第一过滤器区域24并固定在第二过滤器区域25中。

公开(公告)号：US09012849B2

公开(公告)日：2015-04-21

申请号：US13937713

申请日：2013-07-09

Applicant: Wei-Chun Hsu ,  Jonathan Kien-Kwok Tong ,  Bolin Liao ,  Brian Burg ,  Gang Chen

Inventor： Wei-Chun Hsu ,  Jonathan Kien-Kwok Tong ,  Bolin Liao ,  Brian Burg ,  Gang Chen

IPC: G01J5/02 ,  G01J3/45 ,  G01T1/36 ,  G01N21/17 ,  G01N21/3563

CPC classification number: G01J3/45 ,  G01N21/1702 ,  G01N21/171 ,  G01N21/3563 ,  G01T1/36

Abstract: A system for measuring the absorption spectrum of a sample is provided that includes a broadband light source that produces broadband light defined within a range of an absorptance spectrum. An interferometer modulates the intensity of the broadband light source for a range of modulation frequencies. A bi-layer cantilever probe arm is thermally connected to a sample arm having at most two layers of materials. The broadband light modulated by the interferometer is directed towards the sample and absorbed by the sample and converted into heat, which causes a temperature rise and bending of the bi-layer cantilever probe arm. A detector mechanism measures and records the deflection of the probe arm so as to obtain the absorptance spectrum of the sample.

Abstract translation: 提供了一种用于测量样品的吸收光谱的系统，其包括产生在吸收光谱范围内限定的宽带光的宽带光源。 干涉仪在一定范围的调制频率下调制宽带光源的强度。 双层悬臂探针臂热连接到具有至多两层材料的样品臂。 由干涉仪调制的宽带光被引向样品并被样品吸收并转化成热，这导致双层悬臂探针臂的温度升高和弯曲。 检测器机构测量和记录探针臂的偏转，以获得样品的吸收光谱。

公开(公告)号：US20150085284A1

公开(公告)日：2015-03-26

申请号：US14518588

申请日：2014-10-20

Applicant: WAYNE STATE UNIVERSITY

Inventor： Gregory W. Auner ,  Changhe Huang ,  Christopher M. Thrush ,  Michelle Brusatori

IPC: G01J3/02 ,  G01J3/44 ,  G01J3/45

CPC classification number: G01J3/021 ,  G01J3/18 ,  G01J3/44 ,  G01J3/4412 ,  G01J3/45 ,  G01J3/4531 ,  G01J3/4532 ,  G02B5/1861

Abstract: An apparatus for performing Raman spectral analysis of a sample is described, comprising a coherent light source, an first optical chain to direct the coherent light to impinge on the sample, a second optical chain to direct the scattered light onto a diffraction grating, and a third optical chain to direct the diffracted light onto detection array. The diffraction grating is a stairstep with a metalized surface, and a plurality of metalized stripes on a flat surface is disposed in a direction orthogonal to the long dimension of the stairsteps. The region between the flat surface and the stairstep is transparent. The zeroth-order fringe is selected by a slit and directed onto camera. The resultant interferogram is Fourier transformed to produce a representation of the Raman spectrum.

Abstract translation: 描述了一种用于执行样本的拉曼光谱分析的装置，包括相干光源，用于引导相干光照射到样本上的第一光链，将散射光引导到衍射光栅上的第二光链，以及 第三光链以将衍射光引导到检测阵列上。 衍射光栅是具有金属化表面的阶梯，并且平坦表面上的多个金属化条纹沿着与步态的长尺寸正交的方向设置。 平坦表面和阶梯之间的区域是透明的。 零级条纹由狭缝选择并定向到相机上。 所得干涉图被傅立叶变换以产生拉曼光谱的表示。

公开(公告)号：US08933406B2

公开(公告)日：2015-01-13

申请号：US13723274

申请日：2012-12-21

Applicant: Agilent Technologies, Inc.

Inventor： Gregg Ressler ,  Jeffrey H. Saller

IPC: G01J5/02 ,  G01B9/02 ,  G01J3/45 ,  G01N21/35

CPC classification number: G01B9/02 ,  G01B9/02015 ,  G01J3/06 ,  G01J3/45 ,  G01J3/4535 ,  G01J2003/061 ,  G01N21/35 ,  G01N2021/3595 ,  G01N2201/061 ,  G01N2201/10 ,  G02B7/182

Abstract: An interferometer includes a fixed assembly including a base, a beam splitter assembly and a fixed mirror, and a movable assembly including an upper scan carriage, a lower scan carriage and a movable mirror connected to the lower scan carriage. The pair of inner bearing flexures is connected to the base and the upper scan carriage, enabling movement of the upper scan carriage relative to the base, and the pair of outer bearing flexures is connected to the upper and lower scan carriages, enabling movement of the lower scan carriage relative to the upper scan carriage. The movement of the upper and lower scan carriages enable a scan movement of the movable mirror in a scan direction restricted such that the scan movement maintains a plane containing the movable mirror parallel to planes containing the movable mirror at respective distances between the movable and fixed assemblies during the scan movement.

Abstract translation: 干涉仪包括固定组件，其包括基座，分束器组件和固定反射镜，以及包括上扫描滑架，下扫描滑架和连接到下扫描滑架的可移动反射镜的可移动组件。 一对内轴承挠曲件连接到基座和上扫描托架，使得上扫描托架能够相对于基座移动，并且一对外轴承挠曲件连接到上扫描支架和下扫描支架， 相对于上扫描托架的下扫描托架。 上扫描支架和下扫描支架的移动使扫描方向的扫描运动受到限制，使得扫描运动将包含可移动镜的平面平行于可移动反射镜的平面保持在可移动和固定组件之间的相应距离处 在扫描运动期间。

公开(公告)号：US20140362384A1

公开(公告)日：2014-12-11

申请号：US14368609

申请日：2011-12-28

Applicant: Claudia Gorschboth ,  Tobias Jeglorz ,  Ole Massow ,  Henning Wisweh ,  Klaus Vogler

Inventor： Claudia Gorschboth ,  Tobias Jeglorz ,  Ole Massow ,  Henning Wisweh ,  Klaus Vogler

IPC: G01J3/45 ,  G01B9/02

CPC classification number: G01J3/45 ,  G01B9/02091 ,  G01J3/2803

Abstract: A spectroscopic instrument includes a first optical component for spatial spectral splitting of a polychromatic beam of light impinging onto the first optical component, an objective, which routes various spectral regions of the split beam of light onto differing spatial regions, and a sensor, situated downstream of the objective in the beam path of the beam of light, with a plurality of light-sensitive sensor elements. The sensor elements are arranged in the beam path of the split beam of light in such a manner that each sensor element registers the intensity of a spectral sector of the beam of light and the medians of the spectral sectors are situated equidistant from one another in the k-space, where k denotes the wavenumber.

Abstract translation: 光谱仪包括用于对入射到第一光学部件上的光的多色光束进行空间光谱分割的第一光学部件，其将分离光束的各种光谱区域路由到不同的空间区域上，以及位于下游的传感器 具有多个光敏传感器元件的光束的光束路径中的物镜。 传感器元件被布置在分束光束的光束路径中，使得每个传感器元件记录光束的光谱扇区的强度，并且光谱扇区的中心位于等距离的位置 k空间，其中k表示波数。

公开(公告)号：US08848271B2

公开(公告)日：2014-09-30

申请号：US14191547

申请日：2014-02-27

Applicant: Dimensional Photonics International, Inc.

Inventor： Robert F. Dillon ,  Neil H. K. Judell ,  Timothy I. Fillion ,  Gurpreet Singh ,  Nathan E. Wallace

IPC: G02B26/08 ,  G03H1/12 ,  G06K9/00 ,  G01J1/20 ,  G01B9/10

CPC classification number: G02B26/06 ,  G01B11/2441 ,  G01B11/2527 ,  G01J3/0229 ,  G01J3/26 ,  G01J3/45 ,  G02B5/32 ,  G02B21/361 ,  G02B27/0068 ,  G02B27/0087 ,  G02B2207/117 ,  G06T2200/04 ,  G06T2200/08

Abstract: Described are a method and apparatus for high-speed phase shifting of an optical beam. A transparent plate having regions of different optical thickness is illuminated by an optical beam along a path of incidence that extends through the regions. The transparent plate can be moved or the optical beam can be steered to generate the path of incidence. The optical beam exiting the transparent plate has an instantaneous phase value according to the region in which the optical beam is incident. Advantageously, the phase values are repeatable and stable regardless of the location of incidence of the optical beam within the respective regions, and phase changes at high modulation rates are possible. The method and apparatus can be used to modulate a phase difference of a pair of coherent optical beams such as in an interferometric fringe projection system.

Abstract translation: 描述了用于光束的高速相移的方法和装置。 具有不同光学厚度的区域的透明板被沿着延伸穿过该区域的入射路径的光束照射。 可以移动透明板或者使光束转向以产生入射路径。 离开透明板的光束根据光束入射的区域具有瞬时相位值。 有利地，无论光束在各个区域内的入射位置如何，相位值都是可重复和稳定的，并且高调制速率下的相位变化是可能的。 该方法和装置可以用于调制一对相干光束的相位差，例如在干涉条纹投影系统中。

公开(公告)号：US08830475B1

公开(公告)日：2014-09-09

申请号：US13969634

申请日：2013-08-19

Applicant: National Cheng Kung University

Inventor： Wei-Chih Wang ,  Benjamin Estroff ,  Chih-Han Chang ,  Fong-Chin Su

IPC: G01J3/45 ,  G01B9/02

CPC classification number: G01J3/45 ,  G01J3/021 ,  G01J3/4531 ,  G01J3/4532

Abstract: Disclosed is an interferometer comprising a light source, a reflective element, and a photodetector. The light source is configured to emit a light beam, and an angle is formed by inclusion between a direction to which the light beam travels and the reflective element, the photodetector is configured to be substantially perpendicular to the reflective element. The light beam is halved into a first light beam propagating by the included angle, and a second light beam reflected off the reflective element, the first light beam and the second light beam interfere each other to form an interferogram on the photodetector, which detects the interferogram. By benefit of above, the interferometer does not need to reposition its parts in order to make adjustment to interferogram, thereby simplifying optical element setup and minimizing physical volume of the interferomger. Also disclosed is a spectrometer including the same interferometer and a Fourier-transform-capable analyzer.

Abstract translation: 公开了一种包括光源，反射元件和光电检测器的干涉仪。 光源被配置为发射光束，并且通过在光束行进的方向与反射元件之间包含形成角度，光电检测器被配置为基本上垂直于反射元件。 光束被分成一个以夹角传播的第一光束，并且从反射元件反射的第二光束，第一光束和第二光束彼此相互干涉以在光电检测器上形成干涉图，该光检测器检测 干涉图。 受益于上述，干涉仪不需要重新定位其部件以便调整干涉图，从而简化了光学元件的设置并使干涉仪的体积最小化。 还公开了包括相同干涉仪和具有傅里叶变换的分析仪的光谱仪。