公开(公告)号：US6124973A

公开(公告)日：2000-09-26

申请号：US125534

申请日：1999-01-11

Applicant: Keming Du ,  Peter Loosen

Inventor： Keming Du ,  Peter Loosen

IPC: G02B27/09 ,  H01S5/40 ,  G02B27/10

CPC classification number: G02B27/09 ,  H01S5/4012 ,  H01S5/4025

Abstract: The invention concerns an arrangement for shaping the geometrical cross-sion of a radiation field of a plurality of solid and/or semiconductor laser, in particular a plurality of diode laser arrays or field arrangements whose beam-outlet openings extend in a direction lying in the x-y plane and whose ray beam is radiated in the z direction, the x, y and z directions establishing a rectangular co-ordinate system, with an optical structure for generating a defined cross-section for a radiation field. The optical structure comprises reflective elements onto which the radiation of the respective lasers or laser field arrangements is guided and at which the radiation is reflected. The arrangement according to the invention is characterized in that each laser or laser field arrangement both in the x direction and in the y direction; and in that the reflection surfaces of the reflective elements are disposed in planes which are mutually offset and/or tilted such that the radiation portions reflected by the reflection surfaces are mutually offset perpendicular to the radiation diffusion direction with respect to the offset of the radiation outlet surfaces.

Abstract translation: PCT No.PCT / EP97 / 00823 Sec。 371日期1999年1月11日 102（e）日期1999年1月11日PCT提交1997年2月20日PCT公布。 公开号WO97 / 31284 日期1997年8月28日本发明涉及一种用于整形多个固体和/或半导体激光器的辐射场的几何横截面的布置，特别是多个二极管激光器阵列或其射出口开口延伸的现场布置 位于xy平面中的方向，其射线束沿z方向辐射，x，y和z方向建立矩形坐标系，具有用于产生用于辐射场的限定横截面的光学结构。 光学结构包括反射元件，各激光器或激光器场布置的辐射被引导到反射元件上，并且辐射被反射。 根据本发明的装置的特征在于，在x方向和y方向上的每个激光或激光场布置; 并且反射元件的反射表面设置在相互偏移和/或倾斜的平面中，使得被反射表面反射的辐射部分相对于辐射扩散方向相对于辐射扩散方向相对偏移 表面。

公开(公告)号：US5479429A

公开(公告)日：1995-12-26

申请号：US983532

申请日：1994-04-14

Applicant: Uwe Habich ,  Keming Du ,  Heinz-Dieter Plum

Inventor： Uwe Habich ,  Keming Du ,  Heinz-Dieter Plum

IPC: H01S3/03 ,  H01S3/08 ,  H01S3/06 ,  H01S3/07

CPC classification number: H01S3/08 ,  H01S3/0315

Abstract: A laser resonant cavity for utilizing media, having an annular cross sect as well as two end mirrors. The end mirrors exhibit a toroidal surface, and at least one end mirror has at least one aperture through which the laser beam can be coupled out.

Abstract translation: 一种用于利用介质的激光谐振腔，其具有环形横截面以及两个后视镜。 末端反射镜呈现环形表面，并且至少一个端镜具有至少一个孔，激光束可通过该孔被耦合出来。

公开(公告)号：US20230296959A1

公开(公告)日：2023-09-21

申请号：US18017675

申请日：2021-06-30

Applicant: KEMING DU

Inventor： KEMING DU

IPC: G02F1/35

CPC classification number: G02F1/3525 ,  G02F1/3503 ,  G02F1/3542 ,  G02F1/3505 ,  G02F2203/50

Abstract: An optical arrangement for enlarging spectral bandwidths by nonlinear self-phase modulation for shortening ultrashort pulses using a multipass cell and a nonlinear medium. The nonlinear medium is arranged within the multipass cell, and a laser beam having ultrashort pulses passes through the nonlinear medium multiple times. The laser beam is coupled into the multipass cell by way of a shaping optical unit. The laser beam is shaped into an astigmatic beam and coupled into the multipass cell by way of the shaping optical unit.

公开(公告)号：US08723130B2

公开(公告)日：2014-05-13

申请号：US14000421

申请日：2012-04-23

Applicant: Guangjie Zhai ,  Keming Du ,  Chao Wang ,  Wenkai Yu

Inventor： Guangjie Zhai ,  Keming Du ,  Chao Wang ,  Wenkai Yu

IPC: G01T1/00

CPC classification number: G01J1/44 ,  G01J1/0414 ,  G01J1/42 ,  G01J2001/442

Abstract: A single-photon counting imaging system and method includes an optical filter, first and second lenses, a digital micro-mirror device (DMD) control system, a single-photon counter and a data processing unit. The DMD and first and second lenses convert two-dimensional image data into a one-dimensional sequence. The ultra-weak light is filtered by the optical filter, after which the ultra-weak light image onto the DMD through the first lens. The DMD controls the probability of the photons reflected to the second lens and the second lens controls focusing of the photons. The data processing unit and single-photon counter complete sparse reconstruction. The data processing unit converts the number of photons counted by the single-photon counter within a certain period of time into the probability of detected photon counts. A photon density image is reconstructed by adopting an optimization algorithm based on the measurement matrix on the DMD and the measured value.

Abstract translation: 单光子计数成像系统和方法包括滤光器，第一和第二透镜，数字微镜器件（DMD）控制系统，单光子计数器和数据处理单元。 DMD和第一和第二透镜将二维图像数据转换为一维序列。 超弱光被滤光器滤光，此后超弱光图像通过第一透镜到DMD上。 DMD控制反射到第二透镜的光子的概率，而第二透镜控制光子的聚焦。 数据处理单元和单光子计数器完成稀疏重建。 数据处理单元将在一定时间段内由单光子计数器计数的光子数转换成检测到的光子计数的概率。 通过采用基于DMD测量矩阵和测量值的优化算法重构光子密度图像。

公开(公告)号：US06351477B1

公开(公告)日：2002-02-26

申请号：US09117749

申请日：1998-08-06

Applicant: Keming Du

Inventor： Keming Du

IPC: H01S313

CPC classification number: H01S3/042 ,  H01S3/0606 ,  H01S3/0612 ,  H01S3/067 ,  H01S3/09408 ,  H01S3/094084 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/2383

Abstract: Optically pumped amplifiers, in particular solid-state amplifiers, comprise an amplification medium (1) and an optical pumping arrangement (5) via which the pumping radiation is coupled to the amplification medium (1), the pumping radiation being formed before coupling. The volume of the amplification medium is only partially pumped; the pumped volume of the amplification medium is approximately rectangular in cross-section and approximately perpendicular to the optical axis; and the ratio of the width to height of the rectangular cross-section is greater than 1:8.

Abstract translation: 光泵浦放大器，特别是固态放大器，包括放大介质（1）和光泵装置（5），通过该放大介质泵浦辐射耦合到放大介质（1），泵送辐射在耦合之前形成。 扩增介质的体积仅部分泵送; 放大介质的泵送体积大致为矩形，横截面大致垂直于光轴; 并且矩形横截面的宽度与高度之比大于1:8。

公开(公告)号：US6115185A

公开(公告)日：2000-09-05

申请号：US945739

申请日：1998-01-20

Applicant: Keming Du ,  Peter Loosen

Inventor： Keming Du ,  Peter Loosen

IPC: G02B27/09 ,  H01S3/101 ,  H01S3/23 ,  H01S5/40 ,  G02B27/10

CPC classification number: H01S3/2383 ,  G02B27/09 ,  H01S5/4025 ,  H01S5/4012

Abstract: The present invention relates to a process and device for forming and guig the radiation field of one or several solid and/or semiconductor lasers.

Abstract translation: PCT No.PCT / EP96 / 01286 Sec。 371日期1998年1月20日 102（e）1998年1月20日PCT PCT 1996年3月23日PCT公布。 WO96 / 34441 PCT出版物 日期：1996年10月31日本发明涉及用于形成和引导一个或多个固体和/或半导体激光器的辐射场的方法和装置。

公开(公告)号：US12259632B2

公开(公告)日：2025-03-25

申请号：US18017675

申请日：2021-06-30

Applicant: Keming Du

Inventor： Keming Du

IPC: G02F1/35

Abstract: An optical arrangement for enlarging spectral bandwidths by nonlinear self-phase modulation for shortening ultrashort pulses using a multipass cell and a nonlinear medium. The nonlinear medium is arranged within the multipass cell, and a laser beam having ultrashort pulses passes through the nonlinear medium multiple times. The laser beam is coupled into the multipass cell by way of a shaping optical unit. The laser beam is shaped into an astigmatic beam and coupled into the multipass cell by way of the shaping optical unit.

公开(公告)号：US20130341487A1

公开(公告)日：2013-12-26

申请号：US14000421

申请日：2012-04-23

Applicant: Guangjie Zhai ,  Keming Du ,  Chao Wang ,  Wenkai Yu

Inventor： Guangjie Zhai ,  Keming Du ,  Chao Wang ,  Wenkai Yu

IPC: G01J1/44

CPC classification number: G01J1/44 ,  G01J1/0414 ,  G01J1/42 ,  G01J2001/442

Abstract: The invention relates to a single-photon counting imaging system and a single-photon counting imaging method. The system comprises a optical filter, a first lens, a digital micro-mirror device (DMD) control system, a second lens, a single-photon counter and a data processing unit, where the DMD together with the first lens and the second lens are used for converting two-dimensional image data into a one-dimensional sequence to complete sampling of measured signals; the ultra-weak light is filtered by the optical filter, after which the ultra-weak light image onto the DMD through the first lens, and the DMD control system controls the probability of the photons reflected to the second lens and the second lens controls the focusing of the photons; and the data processing unit together with the single-photon counter to complete sparse reconstruction, and the data processing unit converts the number of photons counted by the single-photon counter within a certain period of time into the probability of detected photon counts, as the measured value, and a photon density image is reconstructed by adopting an optimization algorithm based on the measurement matrix on the DMD and the measured value, thereby solving out the two-dimensional image.

Abstract translation: 本发明涉及单光子计数成像系统和单光子计数成像方法。 该系统包括滤光器，第一透镜，数字微镜装置（DMD）控制系统，第二透镜，单光子计数器和数据处理单元，其中DMD与第一透镜和第二透镜 用于将二维图像数据转换为一维序列以完成测量信号的采样; 超弱光被滤光器滤光，之后通过第一透镜将超弱光图像输送到DMD上，并且DMD控制系统控制反射到第二透镜的光子的概率，而第二透镜控制第二透镜 聚焦光子; 和数据处理单元与单光子计数器一起完成稀疏重建，数据处理单元将在一定时间段内由单光子计数器计数的光子数转换为检测到的光子计数的概率，如 通过采用基于DMD测量矩阵的优化算法和测量值来重构光子密度图像，从而求出二维图像。

公开(公告)号：US5185760A

公开(公告)日：1993-02-09

申请号：US635619

申请日：1991-02-28

Applicant: Keming Du ,  Joachim Franek ,  Peter Loosen

Inventor： Keming Du ,  Joachim Franek ,  Peter Loosen

IPC: H01S3/08 ,  H01S3/034

CPC classification number: H01S3/0343

Abstract: Aerodynamic window for a gas laser, whose active chamber emits a focussed ser beam and is flow connected by means of a beam passage opening with a window chamber connected to a vacuum pump and which has a beam exit opening in an outer area which is preferably under atmospheric pressure. In order to reduce the pumping power necessary for the aerodynamic window and improve the laser beam quality, the window is so constructed that the laser beam emitted by the active chamber has a first focus in the vicinity of the beam passage opening and is deflected onto a focussing mirror arranged in the window chamber and which gives the laser beam leaving the latter a second focus located in the vicinity of the beam exit opening.

Abstract translation: PCT No.PCT / DE89 / 00432 Sec。 371日期1991年2月28日 102（e）日期1991年2月28日PCT Filed 1989年6月29日PCT Pub。 第WO90 / 00319号公报 日期1990年1月11日。气体激光器的动力学窗口，其活动室发射聚焦激光束，并且通过光束通道开口流动连接，窗口室连接到真空泵，并且具有光束出射开口 优选在大气压下的外部区域。 为了减小空气动力学窗口所需的泵送功率并提高激光束质量，窗口被构造成使得由主动室发射的激光束在光束通道开口附近具有第一焦点并被偏转到 聚焦反射镜布置在窗室中，并且使得激光束离开光束离开光束出口的附近的第二焦点。

公开(公告)号：US09807317B2

公开(公告)日：2017-10-31

申请号：US14113250

申请日：2012-04-23

Applicant: Guangjie Zhai ,  Keming Du ,  Chao Wang ,  Wenkai Yu

Inventor： Guangjie Zhai ,  Keming Du ,  Chao Wang ,  Wenkai Yu

IPC: H04N5/30 ,  G01J3/28 ,  G01J3/00 ,  G02F1/01 ,  G01N21/76 ,  G01J1/42 ,  A61B5/00 ,  G01N21/64 ,  G01J1/44

CPC classification number: H04N5/30 ,  A61B5/0075 ,  G01J1/42 ,  G01J3/2803 ,  G01J3/2823 ,  G01J2001/442 ,  G01J2003/2826 ,  G01N21/6452 ,  G01N21/763

Abstract: An ultra-weak light multispectral imaging method and an ultra-weak light multispectral imaging system, which can realize multispectral two-dimensional imaging of an ultra-weak light object by constituting a linear array from single-photon detectors of all response wavelengths and combining it with light-splitting technology. The ultra-weak light multispectral two-dimensional imaging system realizes high-resolution optical modulation by adopting the compressive sensing (CS) theory and the digital light processing (DLP) technology and using a linear array single-photon detector as a detection element; the ultra-weak light multispectral two-dimensional imaging system comprises a light filter, a first lens (1), a DMD control system, a second lens, a spectrophotometer, a linear array single-photon detector consisting of a plurality of single-photon detectors with different response wavelengths, and a central processing unit; and the sensitivity of the system can reach the single-photon level. The invention can be widely applied in the fields of biological self-illumination, medical diagnosis, nondestructive material analysis, astronomical observation, national defense and military, spectral measurement, quantum electronics and the like.