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46 条记录 (耗时 0.027 秒)

    Dual channel fabry-perot laser
    43.
    发明授权
    Dual channel fabry-perot laser 失效
    双通道fabry-perot激光器

    公开(公告)号：US4730327A

    公开(公告)日：1988-03-08

    申请号：US809577

    申请日：1985-12-16

    申请人： Eugene I. Gordon

    发明人： Eugene I. Gordon

    IPC分类号： H01S5/062 ,  H01S5/10 ,  H01S5/22 ,  H01S5/40 ,  H01S3/19 ,  H01S3/08

    CPC分类号： H01S5/22 ,  H01S5/1032 ,  H01S5/4031 ,  H01S5/06213

    摘要： A semiconductor laser diode comprising first and second parallel optically coupled waveguides is disclosed. The waveguides extend between first and second partially reflecting end facets. The first waveguide terminates at the first facet with a high reflection coating and at the second facet with an anti-reflection coating. The second waveguide terminates at the first facet with an anti-reflection coating and at the second facet with a high reflection coating. Thus, the feedback path for the laser involves portions of both waveguides and the coupling region therebetween. As a result, no standing waves are set up in either waveguide near the portions of the end facets which are anti-reflection coated and from which radiation is emitted so that processes which cause emitting facets to fail at high powers are mitigated. When the two waveguides are slightly different geometrically and are coupled by a periodic structure, laser oscillations are sustainable only in a narrow frequency band centered about a frequency which is relatively insensitive to changes in pumping current so that the laser may be directly modulated with a relatively small FM to AM ratio.

    摘要翻译： 公开了一种包括第一和第二平行光耦合波导的半导体激光二极管。 波导在第一和第二部分反射端面之间延伸。 第一波导在第一面具有高反射涂层并且在第二面具有抗反射涂层。 第二波导在第一刻面处具有抗反射涂层，并且在第二面具有高反射涂层。 因此，激光器的反馈路径涉及两个波导的部分和它们之间的耦合区域。 结果，在防反射涂层的端面部分附近的波导中不设置驻波，并且从其发射辐射，从而减轻了在高功率下导致发射面失效的工艺。 当两个波导在几何上略微不同并且通过周期性结构耦合时，激光振荡仅在以对于泵浦电流变化相对不敏感的频率为中心的窄频带中是可持续的，使得激光可以被相对地直接调制 小FM到AM比。

    Phase locked diode laser array
    44.
    发明授权
    Phase locked diode laser array 失效
    锁相二极管激光器阵列

    公开(公告)号：US4722089A

    公开(公告)日：1988-01-26

    申请号：US809580

    申请日：1985-12-16

    申请人： Dan Botez ,  Eugene I. Gordon

    发明人： Dan Botez ,  Eugene I. Gordon

    IPC分类号： H01S5/40 ,  H01S3/19 ,  H01L33/00 ,  H01S3/082

    CPC分类号： H01S5/4068 ,  H01S2301/166 ,  H01S5/1014

    摘要： The present invention is a semiconductor diode laser array which favors oscillation in the zero degree phase shift mode. The array comprises first and second sets of waveguides which are interdigitated in a coupling region. Energy transfer between the first and second sets of waveguides by way of evanescent coupling is needed to define the feedback paths for sustaining laser oscillations in the waveguides. Such coupling is optimum and the threshold current for lasing lowest when all of the waveguides in both sets oscillate in phase.

    摘要翻译： 本发明是一种有利于零度相移模式下的振荡的半导体二极管激光器阵列。 该阵列包括在耦合区域中互相指向的第一和第二组波导。 需要通过ev逝耦合在第一组和第二组波导之间的能量传递来限定用于维持波导中的激光振荡的反馈路径。 这种耦合是最佳的，并且当两组中的所有波导在同相中振荡时，用于激光的阈值电流最低。

    Purging: a reliability assurance technique for semiconductor lasers utilizing a purging process
    45.
    发明授权
    Purging: a reliability assurance technique for semiconductor lasers utilizing a purging process 失效
    清洗：利用清洗过程的半导体激光器的可靠性保证技术

    公开(公告)号：US4573255A

    公开(公告)日：1986-03-04

    申请号：US592285

    申请日：1984-03-22

    申请人： Eugene I. Gordon ,  Robert L. Hartman ,  Franklin R. Nash

    发明人： Eugene I. Gordon ,  Robert L. Hartman ,  Franklin R. Nash

    IPC分类号： H01S5/00 ,  H01S5/223 ,  H01S5/227 ,  H01S5/24 ,  H01L21/66

    CPC分类号： H01S5/223 ,  H01S5/0014 ,  H01S5/0021 ,  H01S5/2237 ,  H01S5/2275 ,  H01S5/24 ,  Y10S148/072 ,  Y10S148/095 ,  Y10S148/162

    摘要： Prior to packaging, semiconductor lasers are purged by being subjected first to high temperature and high current simultaneously so as to suppress stimulated emission and stress the shunt paths which allow leakage current to flow around the active region. A prudent, but nonessential, second step is to lower the temperature and/or current so that the lasers emit stimulated emission (preferably strongly, near the peak output power), thereby stressing the active region. Lasers subjected to such a purge exhibit stabilized degradation rates in short times (of the order of a few hours) and provide a robust population which meets the performance criteria of long lifetime systems.

    摘要翻译： 在封装之前，通过同时对高温和高电流进行半导体激光器的清除，以抑制受激发射并且使得分流路径受到压力，这允许漏电流围绕有源区域流动。 谨慎但非必要的第二步是降低温度和/或电流，使得激光器发射受激发射（优选地强烈地接近峰值输出功率），从而强调有源区域。 经受这种清洗的激光器在短时间内（几个小时的数量级）表现出稳定的降解速率，并且提供满足长寿命系统的性能标准的可靠的群体。

    Single beam color CRT
    46.
    发明授权
    Single beam color CRT 失效
    单光束彩色CRT

    公开(公告)号：US4514756A

    公开(公告)日：1985-04-30

    申请号：US468502

    申请日：1983-02-22

    申请人： Stuart L. Blank ,  Eugene I. Gordon

    发明人： Stuart L. Blank ,  Eugene I. Gordon

    IPC分类号： H01J29/34 ,  H01J29/32 ,  H01J29/52 ,  H01J31/20 ,  H04N9/22 ,  H04N9/24 ,  H04N9/27

    CPC分类号： H04N9/24 ,  H01J29/32 ,  H01J31/20 ,  H01J2231/121

    摘要： The target of a CRT comprises a single crystal substrate (e.g., YAG) on which are formed a plurality of color stripe triads of epitaxial material. Each stripe triad has three epitaxial layers in a staircase geometry and is overlayed with a metal stripe. The metal stripes are the fingers of a pair of interdigitated electrodes. A single e-beam scans the stripes horizontally, and a sequence of current pulses generated in the electrodes precisely defines the horizontal position of the beam relative to the triads. This information is used to precisely time the beam modulation for introducing color signals. The CRT is particularly suited to miniaturization and application in projection systems.

    摘要翻译： CRT的靶包括单晶衬底（例如，YAG），在其上形成多个外延材料的彩色条纹三元组。 每个条形三元组在梯形几何中具有三个外延层并且覆盖有金属条纹。 金属条是一对叉指电极的指状物。 单个电子束水平扫描条纹，并且在电极中产生的一系列电流脉冲精确地定义了光束相对于三元组的水平位置。 该信息用于精确地时间用于引入颜色信号的光束调制。 CRT特别适用于投影系统中的小型化和应用。