公开(公告)号：US20030035455A1

公开(公告)日：2003-02-20

申请号：US10120045

申请日：2002-04-10

Applicant: Agilent Technologies, Inc.

Inventor： Wolf Steffens

IPC: H01S005/00

CPC classification number: H01S5/06256 ,  H01S5/1032 ,  H01S5/1035 ,  H01S5/1209 ,  H01S5/1218

Abstract: An integrated tunable laser structure comprising a substrate made of semiconductor material, the substrate (1; FIG. 2) comprising a first (2), a second (3), and a third (4) section. The first section (2) provides a low-selective interferometric filtering together with an amplification of a light wave resonating in the laser structure. The second section (3) provides continuous fine-tuning and phase adjustment of the light wave, and the third section (4) provides a wavelength selective reflection of the light wave. Each section allows current injection, wherein a current into the first section (2) causes a wavelength shift of the low-selective interferometric filtering, a current into the second section (3) causes a wavelength shift of resonator modes, and a current into the third section (4) causes a wavelength shift of the wavelength selective reflection.

Abstract translation: 一种包括由半导体材料制成的衬底的集成可调谐激光器结构，所述衬底（1;图2）包括第一（2），第二（3）和第三（4）部分。 第一部分（2）提供低选择性干涉滤波以及激光结构中谐振的光波的放大。 第二部分（3）提供光波的连续微调和相位调整，第三部分（4）提供光波的波长选择反射。 每个部分允许电流注入，其中进入第一部分（2）的电流导致低选择性干涉滤波的波长偏移，进入第二部分（3）的电流引起谐振器模式的波长偏移，并且将电流进入 第三部分（4）引起波长选择反射的波长偏移。

公开(公告)号：US20030048816A1

公开(公告)日：2003-03-13

申请号：US10159312

申请日：2002-05-31

Applicant: Agilent Technologies, Inc.

Inventor： Emmerich Mueller ,  Ralf Haeussler ,  Wolf Steffens ,  Ulrich Kallmann

IPC: H01S003/10

CPC classification number: H01S5/141 ,  H01S3/106 ,  H01S3/1066 ,  H01S3/1068 ,  H01S3/107 ,  H01S5/143

Abstract: The invention relates to a method of tuning a laser, comprising the steps of: providing a laser beam to an external cavity, the laser beam traveling through material along a path between a cavity end element and a tuning element, the path having an optical path length, selecting at least one mode of the laser by introducing a dispersion element in the path of the laser, rotating the tuning element about a pivot axis theoretically defined by the intersection of the surface planes of the cavity end element, the dispersion element and the tuning element to tune the laser, changing the optical path length of the path in order to at least partly compensate a shift between the real position of the pivot axis and the theoretically defined position.

Abstract translation: 本发明涉及一种调谐激光的方法，包括以下步骤：向外腔提供激光束，激光束沿着空腔端元件和调谐元件之间的路径传播通过材料，该路径具有光路 长度，通过在激光的路径中引入色散元素来选择激光的至少一种模式，使调谐元件围绕理论上由空腔端元件，色散元件和色散元件的表面相交界定的枢转轴线旋转 调谐元件以调整激光器，改变路径的光路长度，以便至少部分地补偿枢转轴线的实际位置与理论上定义的位置之间的偏移。

公开(公告)号：US20030048817A1

公开(公告)日：2003-03-13

申请号：US10164747

申请日：2002-06-07

Applicant: Agilent Technologies, Inc.

Inventor： Wolf Steffens ,  Ullrich Kallmann

IPC: H01S003/10

CPC classification number: H01S3/1062 ,  G02F1/216 ,  H01S3/105 ,  H01S5/143

Abstract: An apparatus for tuning a laser comprises an external cavity (2) for receiving a laser beam (4), the laser beam (4) traveling through material along a path (4) between a cavity end element (6) and a tuning element (8), the path (4) having an optical path length. A dispersion element (10) is introduced in the path (4) of the laser for selecting at least one mode of the laser, and a changing element is provided for changing the optical path length of the path (4). The changing element comprises a liquid crystal (32, 42) in at least a part of the path (4), the liquid crystal (32, 42) being sensitive in a characteristic property. The changing element is adapted for changing the characteristic property of the liquid crystal (32, 42) in a way which influences the optical path length of the path (4) to stabilize a mode of the laser.

Abstract translation: 用于调谐激光器的装置包括用于接收激光束（4）的外部空腔（2），激光束（4）沿着空腔端元件（6）和调谐元件（6）之间的路径（4） 8），路径（4）具有光路长度。 在激光的路径（4）中引入色散元件（10），用于选择激光的至少一种模式，并且提供改变光路长度的改变元件（4）。 改变元件包括在路径（4）的至少一部分中的液晶（32,42），液晶（32,42）具有特性敏感。 改变元件适于以影响路径（4）的光路长度的方式改变液晶（32,42）的特性，以稳定激光器的模式。

公开(公告)号：US20020172241A1

公开(公告)日：2002-11-21

申请号：US09997770

申请日：2001-11-30

Applicant: Agilent Technologies, Inc.

Inventor： Wolf Steffens

IPC: H01S003/10

CPC classification number: H01S5/141 ,  H01S5/143

Abstract: An optical arrangement (10, 30, 40) for direction dependent coupling out of light comprises a first (10) and a second (40) polarization converter each for converting the state of polarization of light received in a predetermined way. A polarization dependent coupling device (30) is adapted for coupling out a portion of the light received, whereby the ratio of the coupled out portion substantially depends on the state of polarization of the light received. The polarization dependent coupling device (30) is arranged between the first (10) and the second (40) polarization converters, and the optical arrangement (10, 30, 40) receives from different sides light beams propagating in different directions. The characteristics of the first (10) and the second polarization converters (40) are adapted that the polarization dependent coupling device (30) receives light beams propagating with different states of polarization in the different directions.

Abstract translation: 用于与光取向耦合的光学装置（10,30,40）包括第一（10）和第二（40）偏振转换器，每个用于转换以预定方式接收的光的偏振状态。 偏振相关耦合器件（30）适于耦合出接收的光的一部分，由此耦合输出部分的比率基本上取决于接收的光的偏振状态。 偏振相关耦合器件（30）布置在第一（10）和第二（40）偏振转换器之间，并且光学布置（10,30,40）从不同侧接收沿不同方向传播的光束。 第一（10）和第二偏振转换器（40）的特性适用于偏振相关耦合器件（30）接收在不同方向上以不同偏振态传播的光束。