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    • 1. 发明授权
    • Diode array providing either a pulsed or a CW mode of operation of a
diode pumped solid state laser
    • 二极管阵列提供二极管泵浦固态激光器的脉冲或CW工作模式
    • US5748654A
    • 1998-05-05
    • US664659
    • 1996-06-17
    • Leonard J. MarabellaJacqueline G. BergGerald W. HollemanHagop InjeyanJames M. Zamel
    • Leonard J. MarabellaJacqueline G. BergGerald W. HollemanHagop InjeyanJames M. Zamel
    • H01S3/0941H01S5/40H01S3/098
    • H01S3/0941H01S5/4025
    • A technique for operating a diode pumped solid state laser in a continuous-wave (cw) mode using diodes blocks (12) that are individually operated in a pulsed mode. For some high power laser applications, it is desirable to provide for operation in pulsed and cw modes, but pump diodes are typically designed for efficient operation in only one of these modes. The invention includes a controller (20) that pulses the individual diode blocks (12) on and off, but not necessarily in unison. For a pulsed mode of operation, the diodes (12) in an array are pulsed either at the same time, or sub-arrays are pulsed in a temporally interleaved manner for a higher effective pulse repetition rate. For the cw mode of operation, the diodes (12) are pulsed sequentially in sub-arrays (A-E), such that at least one sub-array is always energized and the complete array appears to be providing continuous pumping energy. In one embodiment, the sub-arrays (A-E) are columns of the array. In another embodiment, the sub-arrays (12') are each associated with a different solid-state gain medium (10'), the gain media being optically coupled in a single laser.
    • 使用以脉冲模式单独操作的二极管块(12)以连续波(cw)模式操作二极管泵浦固态激光器的技术。 对于一些大功率激光器应用,期望提供在脉冲和cw模式中的操作,但是泵二极管通常被设计用于仅在这些模式之一中的有效操作。 本发明包括控制器(20),该控制器(20)打开和关闭各个二极管块(12),但不一定是一致的。 对于脉冲操作模式,阵列中的二极管(12)同时被脉冲,或者子阵列以时间交替的方式脉冲以获得更高的有效脉冲重复率。 对于cw操作模式,二极管(12)在子阵列(A-E)中顺序地脉冲,使得至少一个子阵列总是被激励,并且整个阵列似乎提供连续的泵浦能量。 在一个实施例中,子阵列(A-E)是阵列的列。 在另一个实施例中,子阵列(12')各自与不同的固态增益介质(10')相关联,增益介质在单个激光器中光耦合。
    • 3. 发明授权
    • Phased array combination of laser beams
    • 激光束的相控阵组合
    • US4794345A
    • 1988-12-27
    • US832950
    • 1986-02-26
    • Gary J. LinfordRobert AprahamianLeonard J. MarabellaJesper MunchRichard H. MoyerGabriel G. Lombardi
    • Gary J. LinfordRobert AprahamianLeonard J. MarabellaJesper MunchRichard H. MoyerGabriel G. Lombardi
    • G02F1/35H01S3/08H01S3/23H01S3/098H01S3/30
    • H01S3/2383G02F1/3538H01S3/08059
    • Apparatus, and a corresponding method for its use, for producing a phased array of high-energy laser beams from multiple laser amplifiers. A reference beam produced by a master oscillator senses phase and piston errors in a primary mirror array, and is divided into multiple probe beams, each of which makes multiple passes of its own laser amplifier. The multiple probe beams are together focused into a single phase conjugation cell, which not only produces phase-conjugated reflected beams, to effect compensation for various phase aberrations, but also locks all of the reflected beams together in phase. An arrangement of a birefringent wedge and a quaterwave plate for each of the beams prevents the reflected beams from returning to the master oscillator and facilitates combining of the reflected beams for output as a cophasal array. In a preferred embodiment of the invention, this is accomplished by using the birefringent wedges to deflect each retro-reflected phase-conjugated beam onto the appropriate portion of a monolithic secondary mirror, and then to the primary mirror array.
    • 装置及其使用的相应方法,用于从多个激光放大器产生相位阵列的高能激光束。 由主振荡器产生的参考光束感测主反射镜阵列中的相位和活塞误差,并被分成多个探针光束,每个探头光束使其自身的激光放大器多次通过。 多个探头光束一起聚焦成单相共轭单元,其不仅产生相位共轭反射光束,以实现各种相位差的补偿,而且还将所有反射光束同相锁定在一起。 用于每个光束的双折射楔和四波形板的布置防止反射光束返回到主振荡器,并且促进反射光束的组合用作输出作为相位阵列。 在本发明的优选实施例中,这是通过使用双折射楔将每个反射相位共轭束偏转到单片次级反射镜的适当部分上,然后到主镜阵列来实现的。