公开(公告)号：US08760755B2

公开(公告)日：2014-06-24

申请号：US13776982

申请日：2013-02-26

Applicant: Coherent, Inc.

Inventor： Alexander W. Schill ,  Chengquan Li ,  Philippe Féru

IPC: H01S3/13 ,  H01S3/23 ,  H01S3/136

CPC classification number: H01S3/1301 ,  G01J11/00 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/1106 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/1312 ,  H01S3/136 ,  H01S3/2308

Abstract: A laser and amplifier combination delivers a sequence of optical pulses at a predetermined pulse-repetition frequency PRF. An interferometer generates a signal representative of the carrier-envelope phase (CEP) of the pulses at intervals corresponding to the PRF. The signal includes frequency components from DC to the PRF. The signal is divided into high and low frequency ranges. The high and low frequency ranges are sent to independent high frequency and low frequency control electronics, which drive respectively a high-frequency CEP controller and a low frequency controller for stabilizing the CEP of pulses in the sequence.

Abstract translation: 激光和放大器组合以预定的脉冲重复频率PRF提供一系列光脉冲。 干涉仪以对应于PRF的间隔产生表示脉冲的载波包络相位（CEP）的信号。 该信号包括从DC到PRF的频率分量。 信号分为高频和低频范围。 高频和低频范围被发送到独立的高频和低频控制电子设备，分别驱动高频CEP控制器和低频控制器，以稳定序列中脉冲的CEP。

公开(公告)号：US08669512B2

公开(公告)日：2014-03-11

申请号：US13338386

申请日：2011-12-28

Applicant: Amir Nevet ,  Alex Hayat ,  Meir Orenstein

Inventor： Amir Nevet ,  Alex Hayat ,  Meir Orenstein

IPC: H01J40/14

CPC classification number: G01J11/00 ,  G01J1/42 ,  G01J9/02 ,  G01J2001/442 ,  G01J2001/4466 ,  G01J2009/0211

Abstract: A system for measuring one or more characteristics of light of a photon energy Eph from a light source, that can be determined from measuring three-photon absorption events, the system comprising: a) a detector having a band gap material characterized by gap energy between 2.1 and 3 times Eph; b) an optical element configured to concentrate a beam of light from the light source on the detector; c) a signal amplifier that amplifies an output signal indicative of when three photons produced by the light source undergo a three-photon absorption event in the band gap material; and d) an analyzer that analyzes the output signal to count or measure a rate of the three-photon absorption events, and determines the one or more characteristics of the light from the light source.

Abstract translation: 一种用于测量来自光源的光子能量Eph的光的一个或多个特性的系统，其可以通过测量三光子吸收事件来确定，所述系统包括：a）具有带隙材料的检测器，其特征在于， 2.1倍和3倍Eph; b）光学元件，被配置为将来自光源的光束聚集在检测器上; c）信号放大器，其放大指示由所述光源产生的三个光子何时在所述带隙材料中经历三光子吸收事件的输出信号; 以及d）分析器，其分析输出信号以计数或测量三光子吸收事件的速率，并且确定来自光源的光的一个或多个特性。

公开(公告)号：US20140009757A1

公开(公告)日：2014-01-09

申请号：US14025224

申请日：2013-09-12

Applicant: Bodkin Design And Engineering LLC

Inventor： Andrew Bodkin ,  James T. Daly

IPC: G01J4/04

CPC classification number: G01J4/04 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/2823 ,  G01J3/51 ,  G01J11/00 ,  G01J2003/2826

Abstract: A birefringent filter includes an EM directing element in optical alignment with a first surface of the birefringent plate. A polarimetric imager includes a birefringent filter including a birefringent plate formed of a birefringent material and an EM directing element in optical alignment with a first surface of the birefringent plate. The imager further includes a detector in optical alignment with a second surface of the birefringent plate. A projection system includes an EM directing element and a birefringent filter. The filter includes (1) a birefringent plate formed of a birefringent material and having a first surface in optical alignment with the emissions source, and (2) an EM directing element in optical alignment with a second surface of the birefringent plate.

Abstract translation: 双折射滤光器包括与双折射板的第一表面光学对准的EM引导元件。 偏振成像器包括双折射滤光器，其包括由双折射材料形成的双折射板和与双折射板的第一表面光学对准的EM引导元件。 成像器还包括与双折射板的第二表面光学对准的检测器。 投影系统包括EM定向元件和双折射滤光器。 滤光器包括（1）由双折射材料形成并具有与放射源光学对准的第一表面的双折射板，和（2）与双折射板的第二表面光学对准的EM引导元件。

公开(公告)号：US20130322473A1

公开(公告)日：2013-12-05

申请号：US13907576

申请日：2013-05-31

Applicant: LOS ALAMOS NATIONAL SECURITY, LLC

Inventor： SASIKUMAR PALANIYAPPAN ,  RANDALL P. JOHNSON

IPC: H01S3/10

CPC classification number: H01S3/10 ,  G01J1/4257 ,  G01J11/00 ,  H01S3/0014

Abstract: A preferred apparatus can include a high-power laser; a beam splitter; a non-linear optical assembly configured to cube an incident beam; a detector optically configured to receive an input beam from the beam splitter and a reference beam from the non-linear optical assembly; and a controller configured to calculate a fourth order cross correlation of the input beam and the reference beam to characterize the high-power laser.

Abstract translation: 优选的装置可以包括大功率激光器; 分束器; 配置成使入射光束立方的非线性光学组件; 检测器，被光学配置为接收来自分束器的输入光束和来自非线性光学组件的参考光束; 以及控制器，其被配置为计算所述输入光束和所述参考光束的四阶互相关，以表征所述大功率激光器。

公开(公告)号：US20130206969A1

公开(公告)日：2013-08-15

申请号：US13613257

申请日：2012-09-13

Applicant: Amir Hossein Nejadmalayeri ,  Franz X. Kaertner

Inventor： Amir Hossein Nejadmalayeri ,  Franz X. Kaertner

IPC: G01J1/04

CPC classification number: G01J1/0425 ,  G01J11/00

Abstract: A balanced optical cross correlator includes an optical waveguide, a first photodiode including a first n-type semiconductor and a first p-type semiconductor positioned about the optical waveguide on a first side of the optical waveguide's point of symmetry, and a second photodiode including a second n-type semiconductor and a second p-type semiconductor positioned about the optical waveguide on a second side of the optical waveguide's point of symmetry. A balanced receiver including first and second inputs is configured to produce an output current or voltage that reflects a difference in currents or voltages, originating from the first and the second photodiodes of the balanced cross correlator and fed to the first input and to the second input of the balanced receiver.

Abstract translation: 平衡光交叉相关器包括光波导，包括第一n型半导体的第一光电二极管和位于光波导对称点的第一侧周围的光波导的第一p型半导体，以及第二光电二极管， 第二n型半导体和位于光波导对称点的第二侧上的光波导周围的第二p型半导体。 包括第一和第二输入的平衡接收器被配置为产生反映来自平衡互相关器的第一和第二光电二极管的电流或电压差的输出电流或电压，并被馈送到第一输入端和第二输入端 的平衡接收器。

公开(公告)号：US08279438B2

公开(公告)日：2012-10-02

申请号：US12480042

申请日：2009-06-08

Applicant: Tomoyu Yamashita ,  Motoki Imamura

Inventor： Tomoyu Yamashita ,  Motoki Imamura

IPC: G01J3/40

CPC classification number: G01N21/3581 ,  G01J3/42 ,  G01J11/00

Abstract: An object is to enable a change in a frequency for which an electric signal based on an optical signal is measured by a spectrum analyzer. An optical measurement device includes a first photoconductive switch that receives predetermined pulse light from a first laser light source, and outputs terahertz light having the same repetition frequency as the repetition frequency of the predetermined pulse light. The optical measurement device also includes a second photoconductive switch that receives the terahertz light and a sampling light pulse, and outputs a signal corresponding to a power of the terahertz light at a time point when the sampling light pulse is received. The optical measurement device further includes an RF spectrum analyzer that measures a magnitude of the signal corresponding to a measured frequency that changes over time, an optical coupler that outputs a simultaneous light pulse when the predetermined pulse light and the sampling light pulse are simultaneously input, a photo detector that converts the simultaneous light pulse into an electric signal as a trigger signal, and an optical delay circuit that delays the trigger signal.

Abstract translation: 本发明的目的是能够通过频谱分析仪来测量基于光信号的电信号的频率的变化。 光学测量装置包括第一光电开关，其接收来自第一激光光源的预定脉冲光，并输出具有与预定脉冲光的重复频率相同的重复频率的太赫兹光。 光学测量装置还包括接收太赫兹光和采样光脉冲的第二光电开关，并且在接收采样光脉冲的时间点输出对应于太赫兹光的功率的信号。 光学测量装置还包括RF频谱分析仪，其测量对应于随时间变化的测量频率的信号的幅度;当预定脉冲光和采样光脉冲被同时输入时输出同时的光脉冲的光耦合器; 将同步光脉冲转换成电信号作为触发信号的光检测器，以及延迟触发信号的光延迟电路。

公开(公告)号：US20120228501A1

公开(公告)日：2012-09-13

申请号：US13372505

申请日：2012-02-14

Applicant: Liejia Qian ,  Jingui Ma ,  Peng Yuan ,  Yongzhi Wang ,  Dongfang Zhang ,  Heyuan Zhu

Inventor： Liejia Qian ,  Jingui Ma ,  Peng Yuan ,  Yongzhi Wang ,  Dongfang Zhang ,  Heyuan Zhu

IPC: G01J5/08

CPC classification number: G01J11/00

Abstract: A single-shot pulse contrast measuring device based on non-harmonic long-wavelength sampling pulse includes a long-wavelength sampling light generation unit, a large-angle non-collinear sum-frequency cross-correlation unit and a high sensitivity signal receiving unit. The long-wavelength sampling light sum-frequency cross-correlator can allow that the beams are interacted with each other at the large non-collinear angle in the quasi-phase matching crystal, match the measuring window of the high sensitivity signal receiving system, and is in favor of eliminating the scattered light noise, thereby achieving the single measurement of the pulse contrast with large temporal window and high dynamic range. The single-shot pulse contrast measuring device of the present invention has good extensibility at the temporal window and dynamic range, and is adapted for measuring the contrast of the high-power laser with various wavelengths.

Abstract translation: 基于非谐波长波长采样脉冲的单次脉冲对比度测量装置包括长波长采样光产生单元，大角度非共线和频和频率互相关单元和高灵敏度信号接收单元。 长波采样光和频互相关器可以允许光束在准相位匹配晶体中的大非共线角度彼此相互作用，与高灵敏度信号接收系统的测量窗口匹配， 有利于消除散射光噪声，从而实现了具有大的时间窗口和高动态范围的脉冲对比度的单次测量。 本发明的单次脉冲对比度测量装置在时间窗口和动态范围上具有良好的延展性，适用于测量各种波长的大功率激光器的对比度。

公开(公告)号：US20120099803A1

公开(公告)日：2012-04-26

申请号：US13290982

申请日：2011-11-07

Applicant: Aydogan Ozcan ,  Michel J.F. Digonnet ,  Gordon S. Kino

Inventor： Aydogan Ozcan ,  Michel J.F. Digonnet ,  Gordon S. Kino

IPC: G06K9/36

CPC classification number: G06E3/003 ,  G01J3/45 ,  G01J11/00

Abstract: A method utilizes an optical image processing system. The method includes calculating a product of (i) a measured magnitude of a Fourier transform of a complex transmission function of an object or optical image and (ii) an estimated phase term of the Fourier transform of the complex transmission function. The method further includes calculating an inverse Fourier transform of the product, wherein the inverse Fourier transform is a spatial function. The method further includes calculating an estimated complex transmission function by applying at least one constraint to the inverse Fourier transform.

Abstract translation: 一种方法利用光学图像处理系统。 该方法包括：计算（i）物体或光学图像的复数传播函数的傅里叶变换的测量幅度和（ii）复数传递函数的傅立叶变换的估计相位项的乘积。 该方法还包括计算乘积的逆傅里叶变换，其中逆傅立叶变换是空间函数。 该方法还包括通过对傅里叶逆变换应用至少一个约束来计算估计的复传输函数。

公开(公告)号：US08150644B2

公开(公告)日：2012-04-03

申请号：US12056111

申请日：2008-03-26

Applicant: Aydogan Ozcan ,  Michael J. F. Digonnet ,  Gordon S. Kino

Inventor： Aydogan Ozcan ,  Michael J. F. Digonnet ,  Gordon S. Kino

IPC: G06F17/00 ,  G06F17/40

CPC classification number: G01J11/00 ,  G04F13/02

Abstract: A method determines a transient response of a sample. The method includes providing a measured magnitude of the Fourier transform of a complex electric field temporal profile of a pulse sequence comprising a first pulse indicative of the transient response of the sample and a second pulse. The method further includes providing an estimated phase term of the Fourier transform of the complex electric field temporal profile of the pulse sequence. The method further includes multiplying the measured magnitude and the estimated phase term to generate an estimated Fourier transform of the complex electric field temporal profile of the pulse sequence. The method further includes calculating an inverse Fourier transform of the estimated Fourier transform, wherein the inverse Fourier transform is a function of time. The method further includes calculating an estimated complex electric field temporal profile of the pulse sequence by applying at least one constraint to the inverse Fourier transform.

Abstract translation: 一种方法确定样品的瞬态响应。 该方法包括提供包括指示样本的瞬态响应的第一脉冲和第二脉冲的脉冲序列的复电场时间分布的傅立叶变换的测量幅度。 该方法还包括提供脉冲序列的复电场时间分布的傅立叶变换的估计相位项。 该方法还包括乘以测量的幅度和估计的相位项以产生脉冲序列的复电场时间曲线的估计傅立叶变换。 该方法还包括计算傅立叶逆变换的傅立叶逆变换，其中逆傅里叶变换是时间的函数。 该方法还包括通过对傅里叶逆变换应用至少一个约束来计算脉冲序列的估计复电场时间分布。

公开(公告)号：US08120772B2

公开(公告)日：2012-02-21

申请号：US12611176

申请日：2009-11-03

Applicant: Marcus T. Cicerone ,  Young Jong Lee

Inventor： Marcus T. Cicerone ,  Young Jong Lee

IPC: G01J3/44

CPC classification number: G01J3/4412 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/0229 ,  G01J3/0237 ,  G01J3/027 ,  G01J11/00 ,  G01N2021/653

Abstract: Methods and systems are described for suppressing nonresonant background in broadband coherent anti-Stokes Raman scattering (CARS) microscopy and spectroscopy. The methods and systems improve sensitivity and signal to noise ratio in CARS.

Abstract translation: 描述了用于抑制宽带相干反斯托克斯拉曼散射（CARS）显微镜和光谱学中的非共振背景的方法和系统。 方法和系统提高CARS的灵敏度和信噪比。