Vertically stacked spatial light modulator with multi-bit phase resolution
    2.
    发明授权
    Vertically stacked spatial light modulator with multi-bit phase resolution 有权
    具有多位相位分辨率的垂直堆叠空间光调制器

    公开(公告)号:US06822780B1

    公开(公告)日:2004-11-23

    申请号:US10601360

    申请日:2003-06-23

    IPC分类号: G02B2600

    CPC分类号: G02B26/001 G02B26/06

    摘要: A spatial light modulator having n bits of phase resolution has n stacked layers of deformable electrode pairs supporting a deformable reflective surface, each electrode pair included in upper and lower stacked elongate ribbon conductors extending in respective orthogonal directions, each coincidence of an upper and lower electrode pair defining a pixel within the respective stacked layer, each electrode pair deforming to a maximum deformation in response to an applied write voltage across the pair so as to produce at the reflective layer a phase correction of the corresponding pixel proportional to the corresponding deformation, and wherein the maximum deformation of the pixels in each stacked layer is the same, and wherein the maximum deformation of successive layers decreases in ascending order of the stacked layers.

    摘要翻译: 具有n位相位分辨率的空间光调制器具有支撑可变形反射表面的可变形电极对的n个堆叠层,每个电极对包括在各个正交方向上延伸的上部和下部堆叠的细长带状导体中,每个电极对的上部和下部电极 每个电极对响应于所述对上施加的写入电压而变形到最大变形,以便在所述反射层处产生与相应变形成比例的相应像素的相位校正,以及 其中每个堆叠层中的像素的最大变形相同,并且其中连续层的最大变形以堆叠层的升序减小。

    Holographic laser aimpoint selection and maintenance
    3.
    发明授权
    Holographic laser aimpoint selection and maintenance 有权
    全息激光瞄准点选择和维护

    公开(公告)号:US6115123A

    公开(公告)日:2000-09-05

    申请号:US290339

    申请日:1999-04-12

    摘要: The present invention relates to a laser pointing and tracking system which forms and maintains a small laser spot size at a selected aimpoint on a target and compensates for optical distortion in the intervening media. The invention comprises an illumination laser for directing a first wide divergence beam of short-pulse laser radiation toward a stationary or moving target. The target reflects a portion of the incident beam as return radiation which is interfered with a properly-timed short-pulse reference beam on an electronic radiation detector array. The detector array signals are processed to produce an electronic hologram which is imposed as a phase pattern on a spatial light modulator. A laser reads out the hologram to direct a beam of radiation at the target. Multiple sequential illumination and hologram formation/readout steps produce a small spot size at the selected aimpoint. The small spot is maintained at the aimpoint during the duration of an engagement by repeating the above steps.

    摘要翻译: 激光指向和跟踪系统技术领域本发明涉及一种激光瞄准和跟踪系统,其在目标上的选定目标点处形成并维持小的激光光斑尺寸,并补偿中间介质中的光学失真。 本发明包括用于将短脉冲激光辐射的第一宽发散光束朝向静止或移动目标引导的照明激光器。 目标将入射光束的一部分反射为在电子辐射探测器阵列上受到正确定时的短脉冲参考光束的返回辐射。 处理检测器阵列信号以产生作为相位图案施加在空间光调制器上的电子全息图。 激光器读出全息图以将目标射线束引导。 多个顺序照明和全息图形成/读出步骤在所选择的目标点产生小的斑点大小。 通过重复上述步骤,在接合期间,小点保持在瞄准点。

    Cavity pumped, solid state lasers
    4.
    发明授权
    Cavity pumped, solid state lasers 失效
    腔泵浦,固态激光器

    公开(公告)号:US5307365A

    公开(公告)日:1994-04-26

    申请号:US975748

    申请日:1992-11-13

    摘要: A highly efficient pumping configuration for a solid state laser uses a diode bar pumping source producing optical energy coherent along an axis normal to the plane of the diode junctions. Pump energy is nearly collimated by a cylindrical optical fiber and applied through a minimum width injection port to a low absorption solid state laser rod in a highly reflective optical cavity including a cylindrical sleeve forming a coolant chamber around the laser rod. The nearly collimated energy is focussed to a minimum width in the plane of the injection port in order to minimize the loss of energy from the optical chamber by leakage out through the port. The laser rod is substantially evenly illuminated by the entire energy entering the cavity on the first pass. Optical energy not absorbed during illumination through is reflected within the cavity until substantially absorbed by the solid state laser rod.

    摘要翻译: 用于固态激光器的高效泵浦配置使用二极管棒泵浦源,其产生沿着垂直于二极管接头平面的轴相干的光能。 泵浦能量通过圆柱形光纤几乎准直,并通过最小宽度的注入口施加到高反射光学腔中的低吸收固态激光棒,该光学腔包括在激光棒周围形成冷却剂腔的圆柱形套筒。 几乎准直的能量集中在注入口的平面中的最小宽度,以便通过通过端口泄漏来最小化来自光学室的能量的损失。 在第一次通过时,激光棒基本均匀地被进入腔的整个能量照射。 在照明通过期间未被吸收的光能在空腔内被反射,直到基本被固态激光棒吸收。

    Zig-zag laser amplifier with polarization controlled reflectors
    5.
    发明授权
    Zig-zag laser amplifier with polarization controlled reflectors 有权
    具有偏振控制反射器的Zig-ZAG激光放大器

    公开(公告)号:US07123634B2

    公开(公告)日:2006-10-17

    申请号:US10841588

    申请日:2004-05-07

    摘要: A solid state zig-zag slab laser amplifier in which depolarization occurring at total internal reflection from opposed lateral faces of the amplifier slab is controlled by selecting a complex evanescent coating that provides a selected phase retardance that results in minimization of depolarization. Without use of the complex coating, small changes in incidence angles can result in phase retardance changes large enough to increase depolarization significantly, especially when the amplifier is operated at higher powers. Appropriate selection of the complex evanescent coating allows a desired phase retardance angle to be maintained relatively constant over a small range of angles of incidence, at a given wavelength, and therefore permits minimization of depolarization and birefringence effects.

    摘要翻译: 通过选择提供选择的相位延迟以导致去极化最小化的复数渐逝涂层来控制在放大器板的相对侧面处的全内反射处发生去极化的固态锯齿形板激光放大器。 不使用复杂的涂层,入射角的小变化可导致相位延迟变化足够大以显着增加去极化,特别是当放大器在较高功率下工作时。 适当选择复杂的消逝涂层允许期望的相位延迟角度在给定波长的小入射角范围内保持相对恒定,因此允许最小化去极化和双折射效应。

    High average power fiber laser system with phase conjugation
    6.
    发明授权
    High average power fiber laser system with phase conjugation 有权
    具有相位共轭的高平均功率光纤激光系统

    公开(公告)号:US6144677A

    公开(公告)日:2000-11-07

    申请号:US132618

    申请日:1998-08-11

    摘要: A relatively high average power optical laser utilizes a diode pumped multi-mode dual-clad fiber amplifier configured for double pass amplification to provide a relatively higher average power than single mode fiber amplifiers. In order to compensate for mode scrambling and depolarization from the multi-mode fiber amplifier, the output beam from the multi-mode fiber amplifier is applied to a vector phase conjugator after a single pass through the amplifier and reflected back into the amplifier. The vector phase conjugator conjugates the electric field amplitude, phase and polarization and reflects a conjugate wave back into the multi-mode fiber amplifier in a reverse direction. The propagation of the conjugate wave through the amplifier unscrambles mode mixing and restores the beam back to its original polarization state. A Faraday rotator and polarization beam splitter are used to outcouple an output beam after the second pass through the multi-mode fiber amplifier.

    摘要翻译: 相对较高的平均功率光学激光器利用配置为双通放大的二极管泵浦多模双包层光纤放大器,以提供比单模光纤放大器相对更高的平均功率。 为了补偿来自多模光纤放大器的模式加扰和去极化,来自多模光纤放大器的输出光束在单次通过放大器并被反射回放大器之后被施加到矢量相位共轭器。 矢量相位共轭器将电场振幅,相位和极化共轭,并将反复的方向反射到多模光纤放大器中。 通过放大器传播共轭波解扰模式混合,并将光束恢复到原来的偏振状态。 在第二次通过多模光纤放大器之后,法拉第旋转器和偏振分束器用于输出输出光束的耦合。