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48 条记录 (耗时 0.023 秒)

    Mirror and cavity designs for sampled grating distributed bragg reflector lasers
    11.
    发明授权
    Mirror and cavity designs for sampled grating distributed bragg reflector lasers 有权
    用于采样光栅分布式布拉格反射器激光器的镜和腔设计

    公开(公告)号：US06590924B2

    公开(公告)日：2003-07-08

    申请号：US09848791

    申请日：2001-05-04

    申请人： Gregory A. Fish ,  Larry A. Coldren

    发明人： Gregory A. Fish ,  Larry A. Coldren

    IPC分类号： H01S308

    CPC分类号： B82Y20/00 ,  H01S5/06256 ,  H01S5/1209 ,  H01S5/1225

    摘要： A tunable laser comprised of a gain section for creating a light beam by spontaneous emission over a bandwidth, a phase section for controlling the light beam around a center frequency of the bandwidth, a cavity for guiding and reflecting the light beam, a front mirror bounding an end of the cavity, and a back mirror bounding an opposite end of the cavity. The back mirror has a &kgr;effB approximately equal to &agr;Tune, where &kgr;effB is an effective coupling constant and &agr;Tune is the maximum amount of propagation loss anticipated for an amount of peak tuning required, and a length of the back mirror is made to produce greater than approximately 80% reflectivity.

    摘要翻译： 一种可调谐激光器，包括用于通过带宽上的自发发射产生光束的增益部分，用于控制带宽中心频率附近的光束的相位部分，用于引导和反射光束的空腔， 空腔的一端，以及限定空腔相对端的后视镜。 后视镜具有大约等于αTune的kappaeffB，其中kappaeffB是有效耦合常数，αTune是所需的峰值调谐量预期的最大传播损耗量，并且使后视镜的长度大于大约 80％的反射率。

    Low damage-producing, anisotropic, chemically enhanced etching method and apparatus
    12.
    发明授权
    Low damage-producing, anisotropic, chemically enhanced etching method and apparatus 失效
    低损伤产生，各向异性，化学增强蚀刻方法和装置

    公开(公告)号：US4874459A

    公开(公告)日：1989-10-17

    申请号：US258646

    申请日：1988-10-17

    申请人： Larry A. Coldren ,  Jay A. Skidmore

    发明人： Larry A. Coldren ,  Jay A. Skidmore

    IPC分类号： H01J37/305 ,  H01L21/306

    CPC分类号： H01L21/30621 ,  H01J37/3053

    摘要： Anisotropic chemically enhanced etching apparatus producing extremely low surface damage during the etching process. There is an evacuated main chamber in which an etching process takes place. A temperature-controlled, tiltable stage receives and holds the substrate to be etched within the main chamber. There is a nozzle directing a flow against a substrate mounted on the stage. There is a microwave cracker connected to a supply of molecular chlorine on an input side and connected to the nozzle on an output side for exciting and disassociating the molecular chlorine to be discharged through the nozzle as chlorine radicals. A first controller is operably connected to the cracker for controlling the flow of chlorine radicals being emitted from the nozzle. There is an ion gun for controlling the beam of ions. The second controller includes a feedback signal.

    摘要翻译： 各向异性化学增强蚀刻装置在蚀刻过程中产生极低的表面损伤。 有一个抽真空的主室，其中进行蚀刻工艺。 温度可控的可倾斜台在主室内容纳并保持待蚀刻的基板。 有一个喷嘴将流动引导到安装在平台上的基板上。 微波裂解装置连接到输入侧的分子氯供应源，并与输出侧的喷嘴连接，用于激发和分离通过喷嘴排出的分子氯作为氯自由基。 第一控制器可操作地连接到裂化器，用于控制从喷嘴发射的氯自由基的流动。 存在用于控制离子束的离子枪。 第二控制器包括反馈信号。

    Traveling-wave optoelectronic wavelength converter
    13.
    发明授权
    Traveling-wave optoelectronic wavelength converter 失效
    行波光电波长转换器

    公开(公告)号：US07174058B2

    公开(公告)日：2007-02-06

    申请号：US11489067

    申请日：2006-07-19

    申请人： Christopher W. Coldren ,  Larry A. Coldren

    发明人： Christopher W. Coldren ,  Larry A. Coldren

    IPC分类号： G02F1/01 ,  G02F1/125 ,  G02B6/26

    CPC分类号： H01L31/035236 ,  B82Y20/00 ,  G02F1/025 ,  G02F1/0356 ,  G02F1/2255 ,  G02F1/2257 ,  G02F2/004 ,  G02F2001/212 ,  G02F2002/008 ,  G02F2201/127 ,  H01L31/105 ,  H01S5/026 ,  H01S5/0262 ,  H01S5/0265 ,  H01S5/0427 ,  H01S5/06256 ,  H01S5/1209

    摘要： Traveling-wave optoelectronic wavelength conversion is provided by a monolithic optoelectronic integrated circuit that includes an interconnected traveling-wave photodetector and traveling-wave optical modulator with a widely tunable laser source. Either parallel and series connections between the photodetector and modulator may be used. An input signal modulated onto a first optical wavelength develops a traveling wave voltage on transmission line electrodes of the traveling-wave photodetector, and this voltage is coupled via an interconnecting transmission line of the same characteristic impedance to transmission line electrodes of the traveling-wave optical modulator to modulate the signal onto a second optical wavelength derived from the tunable laser. The traveling wave voltage is terminated in a load resistor having the same characteristic impedance as the photodetector and modulator transmission lines. However, the interconnecting transmission lines and the load resistor may have different impedances than the photodetector and modulator.

    摘要翻译： 行波光电波长转换由单片光电集成电路提供，该集成电路包括具有广泛可调激光源的互连行波光电探测器和行波光调制器。 可以使用光电检测器和调制器之间的并联和串联连接。 调制到第一光波长的输入信号在行波光电检测器的传输线电极上产生行波电压，并且该电压通过相同特性阻抗的互连传输线耦合到行波光学器件的传输线电极 调制器将信号调制到从可调激光器得到的第二光波长上。 行波电压终止于具有与光电检测器和调制器传输线相同的特性阻抗的负载电阻器中。 然而，互连传输线路和负载电阻器可以具有与光电检测器和调制器不同的阻抗。

    Tunable laser source with an integrated wavelength monitor and method of operating same
    14.
    发明授权
    Tunable laser source with an integrated wavelength monitor and method of operating same 失效
    具有集成波长监视器的可调谐激光源及其操作方法

    公开(公告)号：US06714566B1

    公开(公告)日：2004-03-30

    申请号：US09914728

    申请日：2002-01-03

    申请人： Larry A. Coldren ,  Thomas Gordon Beck Mason ,  Gregory Fish

    发明人： Larry A. Coldren ,  Thomas Gordon Beck Mason ,  Gregory Fish

    IPC分类号： H01S310

    CPC分类号： H01S5/0687 ,  H01S5/026 ,  H01S5/0264 ,  H01S5/06256

    摘要： A wavelength monitor is provided based on the transmission response of an optical filter. The monitor provides feedback to the laser enabling it to lock to any given wavelength within its tuning range. The invention is also a process for integrating the wavelength monitor directly on chip with a variety of tunable semiconductor lasers. The invention also comprises a method for controlling the wavelength of a tunable laser by using a wavelength monitor to measure the output light and provide feedback to a control system. The laser and wavelength monitor are integrated together on a single indium phosphide chip. The wavelength monitor comprises a filter with a wavelength dependent transmission function and a pair of detectors. One detector is illuminated with light that has passed through the filter and the other provides a reference to measure the input intensity. Taking the ratio of the filtered light level to the unfiltered light provides a wavelength dependent wavelength. The filter is designed such that the transmission function is monotonic and varies from a minimum at one extent of the laser's tuning range to a maximum at the other extent.

    摘要翻译： 基于滤光器的透射响应提供波长监视器。 监视器为激光器提供反馈功能，使其能够锁定到其调谐范围内的任何给定波长。 本发明也是将波长监视器直接集成在各种可调谐半导体激光器上的过程。 本发明还包括一种通过使用波长监视器来测量可调激光器的波长以测量输出光并向控制系统提供反馈的方法。 激光和波长监测器集成在一个磷化铟芯片上。 波长监视器包括具有波长依赖传输功能的滤波器和一对检测器。 一个检测器用已经通过过滤器的光照亮，另一个检测器用于测量输入强度。 将滤光光级与未过滤光的比率提供波长相关的波长。 滤波器被设计成使得透射功能是单调的，并且在激光器的调谐范围的一个程度上的最小值在另一个程度上变化到最大值。

    Semiconductor laser with conductive current mask
    19.
    发明授权
    Semiconductor laser with conductive current mask 失效
    半导体激光器带导电电流掩模

    公开(公告)号：US4445218A

    公开(公告)日：1984-04-24

    申请号：US306287

    申请日：1981-09-28

    申请人： Larry A. Coldren

    发明人： Larry A. Coldren

    IPC分类号： H01S5/00 ,  H01S5/042 ,  H01S5/062 ,  H01S5/12 ,  H01S3/19

    CPC分类号： H01S5/1228 ,  H01S5/0425 ,  H01S5/06203 ,  H01S5/0622

    摘要： A semiconductor laser is disclosed wherein a grid-like conductive current mask is fabricated between the active region of the laser and one of its electrodes. In one embodiment, the conductive current mask is fabricated in the bottom regions of a corrugated pattern that is created along the length of the semiconductor laser. In a second embodiment, the conductive current mask is totally embedded within a lightly doped buffer layer that is grown proximate to the active region.

    摘要翻译： 公开了一种半导体激光器，其中在激光器的有源区域和其电极之一之间制造格栅状导电电流掩模。 在一个实施例中，导电电流掩模在沿着半导体激光器的长度产生的波纹图案的底部区域中制造。 在第二实施例中，导电电流掩模被完全嵌入在接近活性区域生长的轻掺杂缓冲层中。

    Micropositioners using a crystal having moveable domain walls
    20.
    发明授权
    Micropositioners using a crystal having moveable domain walls 失效
    使用具有可移动畴壁的晶体的微定位器

    公开(公告)号：US4128616A

    公开(公告)日：1978-12-05

    申请号：US823726

    申请日：1977-08-11

    申请人： Larry A. Coldren ,  Ross A. Lemons

    发明人： Larry A. Coldren ,  Ross A. Lemons

    IPC分类号： H01L41/09 ,  H01L41/10

    CPC分类号： H01L41/09 ,  H01L41/18 ,  H02N2/028

    摘要： Objects are displaced with precision over very small distances by a micropositioner which includes a body of crystalline material having at least one domain wall. One end of the crystalline body is affixed to a base. An object to be moved is secured to the opposite end. The crystalline material is such that movement of the domain wall causes relative motion between the ends of the crystalline body, resulting in a displacement of the object with respect to the base. A ruled scale is disposed along the path of travel of each domain wall to indicate displacement over known, precisely controllable distances. In a first embodiment, the object is a microprobe and the crystalline body includes a single domain wall. Movement of the latter provides linear motion of the microprobe. In another embodiment, the object is an electron microscope grid assembly. Here the crystalline body includes two domain walls, allowing two-dimensional planar motion of the assembly.

    摘要翻译： 物体通过微定位器在非常小的距离上精确地位移，微定位器包括具有至少一个畴壁的结晶材料体。 结晶体的一端固定在基体上。 要移动的物体被固定到相对端。 结晶材料使得畴壁的移动导致晶体的端部之间的相对运动，导致物体相对于基座的位移。 沿着每个畴壁的行进路径设置刻度尺，以指示在已知的精确可控距离上的位移。 在第一实施例中，物体是微探针，并且结晶体包括单畴壁。 后者的运动提供了微探针的线性运动。 在另一个实施例中，该目的是电子显微镜栅格组件。 这里，晶体包括两个畴壁，允许组件的二维平面运动。