公开(公告)号：US20040109232A1

公开(公告)日：2004-06-10

申请号：US10684260

申请日：2003-10-10

Inventor： Nabeel Agha Riza ,  Muhammad Junaid Mughal

IPC: G02B005/30 ,  G02B027/28

CPC classification number: G02F1/116 ,  G02F2201/17 ,  G02F2203/055 ,  G02F2203/48

Abstract: Electronically agile optical filtering modules for equalizing light propagation differences in at least two spaced optical beam pathways in the modules. The modules use optical polarization rotation devices that may include acousto-optic tunable filter (AOTF) devices, liquid crystal devices, and magneto-optic devices. Such devices may be subject to polarization dispersion losses (PDL) and polarization mode dispersion (PMD) that may be different for when light travel along different light paths through the device. By redirecting light beams back along a different bi-directional path through the devices which may exhibit non-uniform performance across orthogonal polarizations, PDL and PMD may be reduced.

Abstract translation: 电子敏捷光学滤波模块，用于均衡模块中至少两个间隔开的光束路径中的光传播差异。 这些模块使用可以包括声光可调谐滤波器（AOTF）器件，液晶器件和磁光器件的光学偏振旋转器件。 这样的器件可能经受偏振色散损耗（PDL）和偏振模色散（PMD），当光沿不同光路穿过器件行进时，其可能不同。 通过将光束沿着不同的双向路径重定向通过穿过正交偏振的不均匀性能的装置，PDL和PMD可以减小。

公开(公告)号：US06707586B2

公开(公告)日：2004-03-16

申请号：US09886251

申请日：2001-06-22

Applicant: Tetsuya Kawanishi

Inventor： Tetsuya Kawanishi

IPC: G02B2600

CPC classification number: G02F2/02 ,  G02F2201/17 ,  G02F2201/307

Abstract: An optical frequency converter using reciprocating modulation includes a device that, taking n as a predetermined integer of 1 or more, modulates light of a predetermined frequency to produce an nth order sideband group thereof, a device that modulates the nth order sideband group to produce an (n+1)th order sideband group, and a device that selects a specific sideband from a plurality of sideband groups.

Abstract translation: 使用往复式调制的光频变频器包括以n为1以上的规定的整数的n个调制预定频率的光以产生其n阶边带组的装置，调制n阶边带组以产生 （n + 1）个边带组，以及从多个边带组中选择特定边带的装置。

公开(公告)号：US20030228107A1

公开(公告)日：2003-12-11

申请号：US10165940

申请日：2002-06-11

Inventor： Marta M. Howerton ,  Roger Krahenbuhl ,  Robert P. Moeller

IPC: G02B006/26 ,  G02F001/035

CPC classification number: G02B6/12002 ,  G02B6/122 ,  G02B6/125 ,  G02B6/1342 ,  G02B2006/12104 ,  G02B2006/12142 ,  G02F1/225 ,  G02F2201/17

Abstract: This invention pertains to a device and method for making same. The device includes a substrate suitable for supporting pathways for optical signals; separate pathways disposed on the substrate suitable for propagating optical signals, the pathways including an input and an output optical pathway; and a reflective surface in operative contact with the input and output pathways for receiving an optical signal from the input pathway and reflecting the optical signal into the output pathway. The method for making the device includes the steps of providing two separate optical pathways on a single substrate, one being an input pathway and the other being an output pathway; providing a reflective surface in operative contact with the pathways whereby an input optical signal is passed through the input pathway, reflected by the reflective surface into the output pathway, and passed out of the output pathway, whereby the device can be made on a lithium niobate substrate with titanium-diffused pathways with a loss of about 1.0 dB or less, in a space that is at least null the space required by the same or similar prior art device.

Abstract translation: 本发明涉及一种用于制造其的装置和方法。 该装置包括适于支持光信号路径的基板; 设置在衬底上的适于传播光信号的分离路径，路径包括输入和输出光路; 以及与输入和输出路径操作接触的反射表面，用于从输入路径接收光信号并将光信号反射到输出路径中。 制造该器件的方法包括以下步骤：在单个衬底上提供两个单独的光学路径，一个是输入路径，另一个是输出路径; 提供与路径操作性接触的反射表面，由此输入光信号通过输入路径，由反射表面反射到输出路径中，并从输出路径中流出，由此该装置可制成铌酸锂 在相同或相似的现有技术装置所需的空间的至少1/5的空间内具有约1.0dB或更小的损失的钛扩散路径的衬底。

公开(公告)号：US06639921B1

公开(公告)日：2003-10-28

申请号：US09556216

申请日：2000-04-24

Applicant: Joseph M. Fukumoto

Inventor： Joseph M. Fukumoto

IPC: H01S310

CPC classification number: G02F1/39 ,  G02F1/3551 ,  G02F1/3553 ,  G02F2201/16 ,  G02F2201/17 ,  G02F2201/18 ,  G02F2201/34 ,  G02F2203/05 ,  G02F2203/58 ,  H01S3/0809

Abstract: A novel and efficient system and method for providing an output beam of collimated energy in the 8-12 micron range. The solid state system includes a pump laser (210) for providing an input beam and an OPO (250) using an x-cut potassium titanyl arsenate crystal for shifting the input beam from the first wavelength to a second wavelength. A second optical parametric oscillator (271) is included for shifting the beam from a second wavelength to a third wavelength. The second optical parametric oscillator (271) uses a cadmium selenide crystal. A tuning mechanism with an associated controller is provided to tune the oscillator as needed for a particular application.

Abstract translation: 一种新颖有效的系统和方法，用于提供8-12微米范围内准直能量的输出光束。 固态系统包括用于提供输入光束的泵浦激光器（210）和使用x切割的硫酸钛钾砷酸盐晶体的OPO（250），用于将输入光束从第一波长移位到第二波长。 包括第二光学参量振荡器（271），用于将光束从第二波长移动到第三波长。 第二光参量振荡器（271）使用硒化镉晶体。 提供具有相关联的控制器的调谐机构以根据特定应用的需要来调谐振荡器。

公开(公告)号：US20020176147A1

公开(公告)日：2002-11-28

申请号：US10156241

申请日：2002-05-24

Inventor： Alexander B. Romanovsky

IPC: G02F001/03 ,  G02F001/07

CPC classification number: G02F1/035 ,  G02F1/0018 ,  G02F1/0553 ,  G02F2201/17 ,  G02F2203/03

Abstract: An optical apparatus comprises an input port for receiving light, an output port for outputting light, and an optical path extending from the input port to the output port. The optical path is at least partially comprised of polycrystalline electro-optic material. The optical apparatus further comprises a field generator that generates a field in the polycrystalline electro-optic material. The polycrystalline electro-optic material is configured with respect to the input port and the output port, and is responsive to the field, to cause at least a substantial portion of light propagating along the optical path to deviate from the optical path along a plurality of deviant optical paths. The plurality of deviant optical paths do not pass through the output port, thereby reducing light output through the output port.

Abstract translation: 光学装置包括用于接收光的输入端口，用于输出光的输出端口和从输入端口延伸到输出端口的光路。 光路至少部分地由多晶电光材料组成。 光学装置还包括在多晶电光材料中产生场的场发生器。 多晶电光材料相对于输入端口和输出端口配置，并且响应于该场，使沿着光路传播的至少大部分光沿着多条光路偏离光路 偏离光路。 多个偏离的光路不通过输出端口，从而减少通过输出端口的光输出。

公开(公告)号：US06476956B1

公开(公告)日：2002-11-05

申请号：US09796026

申请日：2001-02-28

Applicant: William J. Cottrell ,  Thomas G. Ference ,  Kenneth A. Puzey

Inventor： William J. Cottrell ,  Thomas G. Ference ,  Kenneth A. Puzey

IPC: G02F109

CPC classification number: G02F1/09 ,  G02F2001/212 ,  G02F2201/17

Abstract: A short pulse of radiation is generated by shining radiation through a magneto-optical material. The material is excited twice to rapidly change a property of the wave, such as the direction of the polarization. The first excitation rotates the polarization in a first direction and the second excitation brings the polarization back to its initial direction before the first excitation. Although the time for relaxation from the excitations may be lengthy, a pulse of light can be produced that is shorter in time than the time for excitation plus the time for relaxation. Light experiencing the pair of lengthy relaxations has each cancelling the effect of the other. The pulse of light has a length that depends on the time difference between the two excitations and the spacing between them. The rapid excitations are provided by pulses of current in a superconductor located near the magneto-optical material.

Abstract translation: 通过光磁材料照射辐射产生短脉冲的辐射。 材料被激发两次以快速改变波的性质，例如极化的方向。 第一激励使偏振沿第一方向旋转，第二激发使第一激发之前的偏振回到其初始方向。 虽然从兴奋中放松的时间可能很长，但是可以产生比激发时间短以及放松时间的时间短的脉冲。 经历一连串漫长的放松的光，都消除了另一个的影响。 光的脉冲具有取决于两个激发之间的时间差和它们之间的间隔的长度。 快速激励由位于磁光材料附近的超导体中的电流脉冲提供。

公开(公告)号：US20020149831A1

公开(公告)日：2002-10-17

申请号：US10112711

申请日：2002-04-02

Applicant: MINEBEA CO., LTD.

Inventor： Takeshi Matsushita ,  Mitsuteru Inoue ,  Hideki Kato ,  Akio Takayama

IPC: G02F001/09

CPC classification number: G02F1/09 ,  G02F2201/17 ,  G02F2203/02

Abstract: A Faraday rotator is provided which obtains excellent optical characteristics with a small number of layers. In the Faraday rotator, a metal reflective film is formed on a substrate, then a first periodic dielectric multilayer film made of silicon dioxide SiO2 and tantalum pentaoxide Ta2O5, a magneto-optical thin film, and a second periodic dielectric multilayer film made of tantalum pentaoxide Ta2O5 and silicon dioxide SiO2 are formed sequentially. The number of layers of the first periodic dielectric multilayer film is larger than that of the second periodic dielectric multilayer film. Incident light from a polarizer passes through the periodic dielectric multilayer films, is reflected at the metal reflective film, returns through the periodic dielectric multilayer films, and passes through an analyzer to exit out.

Abstract translation: 提供法拉第旋转器，其获得具有少量层的优异的光学特性。 在法拉第旋转器中，在基板上形成金属反射膜，然后形成由二氧化硅SiO 2和五氧化钽Ta 2 O 5制成的第一周期性电介质多层膜，磁光薄膜，以及由五氧化二钽制成的第二周期性电介质多层膜 依次形成Ta2O5和二氧化硅SiO2。 第一周期性电介质多层膜的层数大于第二周期性电介质多层膜的层数。 来自偏振片的入射光通过周期性电介质多层膜，在金属反射膜处反射，通过周期性电介质多层膜返回，并通过分析仪退出。

公开(公告)号：US3824717A

公开(公告)日：1974-07-23

申请号：US38393573

申请日：1973-07-30

Applicant: HUGHES AIRCRAFT CO

Inventor： EVTUHOV V ,  SOFFER B ,  TSENG D

IPC: G02F1/39 ,  H03F7/00

CPC classification number: G02F1/39 ,  G02F2201/17

Abstract: There is disclosed an optical frequency up-conversion system which uses a pair of dichroic mirrors positioned on the optical axis of an infrared collector to produce a multipass traverse of a nonlinear crystal positioned between the mirrors by a beam of pumping radiation in order to enhance the field of view, the conversion efficiency and the resolution of the system. The crystal is placed in the optical path at the interaction area of the infrared beam and the pump beam and between the dichroic mirrors. One of the mirrors is transparent to the infrared frequency and the other is transparent to the up-converter sum frequency. Both mirrors are reflective at the pump frequency. The system may be passive and collect a thermal image or it may utilize a pulsed ir illuminator laser in conjunction with a synchronously pulsed pump laser in order to increase the output power level.

Abstract translation: 公开了一种光学上变频系统，其使用位于红外线收集器的光轴上的一对分色镜，以通过泵浦辐射束产生位于反射镜之间的非线性晶体的多次扫描，以增强 视野，转换效率和系统的分辨率。 晶体放置在红外光束和泵浦光束之间以及分色镜之间的相互作用区域的光路中。 其中一个反射镜对于红外线频率是透明的，另一个对上变频器和频是透明的。 两个反射镜在泵频率下都是反射的。 该系统可以是无源的并且收集热图像，或者它可以利用脉冲式照明器激光器与同步脉冲泵浦激光器结合，以便增加输出功率电平。

公开(公告)号：US20230335964A1

公开(公告)日：2023-10-19

申请号：US18023753

申请日：2021-08-05

Applicant: Active Fiber Systems GmbH

Inventor： Tino EIDAM ,  Christian GAIDA ,  Steffen HÄDRICH ,  Fabian STUTZKI

IPC: H01S3/00 ,  G02F1/35 ,  G02F1/365

CPC classification number: H01S3/0057 ,  H01S3/0092 ,  G02F1/3503 ,  G02F1/365 ,  H01S2301/08 ,  G02F2201/17

Abstract: The invention relates to an optical system comprising: a laser source which generates pulsed laser radiation consisting of a temporal sequence of laser pulses; and at least one pulse compression device which is located in the beam path and has a non-linear medium, wherein the laser pulses undergo non-linear spectral broadening during propagation through the medium, and a chirp is applied to the laser pulses. The aim of the invention is to provide an optical system which makes it possible to generate non-linearly compressed laser pulses with improved temporal pulse contrast or with improved pulse quality. According to the disclosed approach, a group delay dispersion which varies along the beam path and which compensates at least partially for the chirp is applied to the laser pulses by the pulse compression device.

公开(公告)号：US09847615B2

公开(公告)日：2017-12-19

申请号：US15310506

申请日：2015-05-12

Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. ,  MAX-PLANCK-GESELLSCHAFT ZUR FOERDERUNG DER WISSENSCHAFTEN E.V.

Inventor： Peter Russbueldt ,  Johannes Weitenberg ,  Andreas Vernaleken ,  Thomas Sartorius ,  Jan Schulte

IPC: G02F1/35 ,  H01S3/00 ,  G02F2/02

CPC classification number: H01S3/0092 ,  G02F1/3511 ,  G02F2001/3503 ,  G02F2201/17 ,  H01S3/0057

Abstract: A method and an arrangement of spectrally broadening laser pulses for non-linear pulse compression is disclosed which is based on the transition from the spectral broadening in a waveguide to the spectral broadening in a suitably shaped lens conductor. The arrangement is non-sensitive with respect to the variations of the pulse power, the position and parameters of the laser beam. The spectrally broadened pulses can be compressed in a satisfactory manner and the quality of the laser beam maintained by dividing the non-linear phase required for spectral broadening into sufficiently smaller steps which can be separated without non-linearity by suitable prorogation. The limitation of the pulse powers to less than the critical power of dielectrics is thus overcome and a pulse energy range for which the spectral broadening in the glass fibers cannot be used, is developed. The arrangement can compress pulses having a large average power.