公开(公告)号：US07068688B2

公开(公告)日：2006-06-27

申请号：US10700934

申请日：2003-11-04

申请人： Yingyin Zou ,  Qiushui Chen ,  Run Zhang ,  Hua Jiang

发明人： Yingyin Zou ,  Qiushui Chen ,  Run Zhang ,  Hua Jiang

IPC分类号： H01S3/115

CPC分类号： H01S3/109 ,  H01S3/09415 ,  H01S3/115 ,  H01S3/1611 ,  H01S3/1673

摘要： An electro-optic Q-switch for generating sequence of laser pulses was disclosed. The Q-switch comprises a quadratic electro-optic material and is connected with an electronic unit generating a radio frequency wave with positive and negative pulses alternatively. The Q-switch is controlled by the radio frequency wave in such a way that laser pulse is generated when the radio frequency wave changes its polarity

摘要翻译： 公开了一种用于产生激光脉冲序列的电光Q开关。 Q开关包括二次电光材料，并与电子单元连接，该电子单元产生具有正和负脉冲的射频。 该Q开关由射频控制，使得当射频改变其极性时产生激光脉冲

公开(公告)号：US07701561B2

公开(公告)日：2010-04-20

申请号：US11701738

申请日：2007-02-02

申请人： Yingyin Kevin Zou ,  Qiushui Chen ,  Hongzhi Zhao

发明人： Yingyin Kevin Zou ,  Qiushui Chen ,  Hongzhi Zhao

IPC分类号： G01N21/00

CPC分类号： G01N21/21

摘要： A polarization imaging apparatus measures the Stokes image of a sample. The apparatus consists of an optical lens set 11, a linear polarizer 14 with its optical axis 18, a first variable phase retarder 12 with its optical axis 16 aligned 22.5° to axis 18, a second variable phase retarder 13 with its optical axis 17 aligned 45° to axis 18, a imaging sensor 15 for sensing the intensity images of the sample, a controller 101 and a computer 102. Two variable phase retarders 12 and 13 were controlled independently by a computer 102 through a controller unit 101 which generates a sequential of voltages to control the phase retardations of VPRs 12 and 13. A set of four intensity images, I0, I1, I2 and I3 of the sample were captured by imaging sensor 15 when the phase retardations of VPRs 12 and 13 were set at (0,0), (π,0), (π,π) and (π/2,π), respectively Then four Stokes components of a Stokes image, S0, S1, S2 and S3 were calculated using the four intensity images.

摘要翻译： 偏振成像装置测量样品的斯托克斯图像。 该装置由光学透镜组11，具有其光轴18的线性偏振器14，其光轴16与轴线18对准22.5°的第一可变相位延迟器12，其光轴17对准的第二可变相位延迟器13 与轴线18成45°的角度，用于感测样品的强度图像，控制器101和计算机102的成像传感器15.两个可变相位延迟器12和13由计算机102通过控制器单元101独立地控制，控制器单元101产生顺序 的电压以控制VPR 12和13的相位延迟。当VPR 12和13的相位延迟设置为（0）时，由成像传感器15捕获一组样本的四个强度图像I0，I1，I2和I3 ，（＆pgr;，0），（＆pgr;，＆pgr）和（＆pgr; / 2，＆pgr））分别使用以下方法计算斯托克斯图像S0，S1，S2和S3的四个斯托克斯分量 四个强度图像。

公开(公告)号：US07791791B2

公开(公告)日：2010-09-07

申请号：US11825995

申请日：2007-07-10

申请人： Hua Jiang ,  Yingyin Kevin Zou ,  Kewen Kevin Li

发明人： Hua Jiang ,  Yingyin Kevin Zou ,  Kewen Kevin Li

IPC分类号： H01S3/00

CPC分类号： H01S3/16 ,  C01G25/006 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2004/04 ,  H01S3/09415 ,  H01S3/1611 ,  H01S3/163 ,  H01S3/1675

摘要： The present invention provides a rare-earth ions doped, especially erbium and ytterbium doped transparent electro-optic gain ceramic material consisting lead, zirconium, titanium and lanthanum. The electro-optic gain ceramic material either has a linear electro-optic coefficient or a quadratic electro-optic coefficient, which is greater than about 0.3×10−16 m2/V2 for the latter, a propagation loss of less than about 0.3 dB/mm, and an optical gain of great than 1.5 dB/mm at a wavelength of about 1550 nm while optically pumped by a 1.4 watts diode laser at a wavelength of 970 nm at 20° C. The present invention also provides electro-optic devices including a rare-earth ions doped, especially erbium and ytterbium doped, transparent electro-optic gain ceramic material consisting lead, zirconium, titanium and lanthanum. The present invention also provides lossless optical devices and amplifiers with an operating wavelength in the range of 1450 nm to 1700 nm while optically pumped at a wavelength in the range of 880 nm to 1020 nm. The materials and devices of the present invention are useful in light intensity, phase and polarization control at a wavelength of about 1550 nm.

摘要翻译： 本发明提供掺杂稀土离子，特别是铒和镱掺杂的透明电光增益陶瓷材料，其包括铅，锆，钛和镧。 电光增益陶瓷材料具有线性电光系数或二次电光系数，其对于后者大于约0.3×10 16 m 2 / V 2，传播损耗小于约0.3dB / 并且在约1550nm的波长处的光增益大于1.5dB / mm，同时在20℃下由波长为970nm的1.4瓦二极管激光器光泵浦。本发明还提供了一种电光器件，包括 掺杂稀土离子，特别是铒和镱掺杂的透明电光增益陶瓷材料，由铅，锆，钛和镧组成。 本发明还提供了工作波长在1450nm至1700nm范围内的无损光学器件和放大器，同时在880nm至1020nm的波长下进行光泵浦。 本发明的材料和装置在约1550nm波长的光强度，相位和极化控制中是有用的。