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公开(公告)号：US3811774A
公开(公告)日：1974-05-21
申请号：US24599572
申请日：1972-04-20
申请人： US ARMY
发明人： HONEYCUTT T , OTTO W , CASON C
CPC分类号： G01S17/325
摘要： A frequency modulated, continuous wave radar range measurement system using a laser oscillator is disclosed. A ring laser, carbon dioxide (CO2), laser oscillator allows target range and velocity measurement as either an active or a passive system. Nonlinear variation of laser output power is obtained by mixing the reflected signal with the energy within the laser cavity. In an active system the resulting beat frequency is sensed by a local receiver-detector and reduced to obtain the range and velocity data at the transmission site. The beat frequency is also superimposed on the transmitted laser beam and is therefore available at the target causing the beat frequency and is available to other detectors which may be positioned to receive a portion of the reflected energy, affording a passive system.
摘要翻译： 公开了一种使用激光振荡器的调频连续波雷达测距系统。 环形激光器，二氧化碳（CO2），激光振荡器允许目标范围和速度测量作为主动或被动系统。 激光输出功率的非线性变化是通过将反射信号与激光腔内的能量混合而获得的。 在有源系统中，所产生的拍频由本地接收机检测器感测并减少以获得传输站点处的范围和速度数据。 拍频也叠加在发射的激光束上，因此在目标处可以产生拍频，并且可用于可被定位成接收一部分反射能量的其它检测器，从而提供无源系统。
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公开(公告)号：US3798570A
公开(公告)日：1974-03-19
申请号：US3798570D
申请日：1973-03-29
申请人： US ARMY
CPC分类号： H01S3/09707 , H01J17/00 , H01J2893/006
摘要： An improved laser system is provided which increases laser efficiency, reduces power consumption and affords simplified construction. The improved laser, which can include any one of several electric pulsed systems, is capable of operating over an extended energy and duty cycle range. In operation only the electrical energy that contributes to the lasing action is drained from the energy source, thus greatly increasing the efficiency of the overall system. A mechanically biasable field effect electron emitter functions as either an active part of the laser or as an adjustable current controlling device, for controlling the period of lasing action.
摘要翻译： 提供了一种改进的激光系统，其提高了激光效率，降低了功耗并提供了简化的结构。 可以包括几个电脉冲系统中的任何一个的改进的激光器能够在扩展的能量和占空比范围内操作。 在操作中，只有有助于激光作用的电能才能从能量源排出，从而大大提高了整个系统的效率。 机械偏置场效应电子发射器用作激光器的有源部分或作为可调电流控制装置，用于控制激光作用的周期。
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公开(公告)号：US3793579A
公开(公告)日：1974-02-19
申请号：US3793579D
申请日：1972-06-02
申请人： US ARMY
CPC分类号： H01S3/121
摘要： A spectrometer is provided for directly obtaining the autoionization energy levels within a gas laser and for observing decay probabilities to lower stable energy levels. A laser cavity is periodically interrupted by a rotating chopper wheel. Simultaneously, a probe within the laser plasma is continuously scanned across a ramp potential for attracting or repelling electrons in the plasma ground state. The laser energy in the autoionization state which varies with the chopper wheel rate is sensed by the probe circuit, isolated, amplified, and ultimately recorded as a scalar function of the modulation voltage input. Thus, the population density of the autoionization energy levels for various laser energy levels is obtainable across the frequency range of the chopper wheel.
摘要翻译： 提供了一种用于直接获得气体激光器内的自动电离能级并且用于观察衰减概率以降低稳定能级的光谱仪。 激光腔被旋转的斩波轮周期性地中断。 同时，激光等离子体内的探针连续扫描跨越斜坡电位，以在等离子体基态中吸引或排斥电子。 在自动电离状态下以斩波轮速度变化的激光能量由探头电路感测，被隔离，放大并最终记录为调制电压输入的标量函数。 因此，可以在斩波轮的频率范围内获得各种激光能级的自动电离能级的种群密度。
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