论文部分内容阅读
单脉冲高密度存储
【出 处】
：
激光与光电子学进展
【发表日期】
：
2007年44期
其他文献
本文分析了纯相位匹配滤波实现特征识别的物理原因。据此我们修改了待识别物体的傅里叶变换的振幅,以减小光强度的动态范围。同时,保持其傅里叶变换的相位不变。用重铬酸盐明胶记录反射式全息匹配滤波器,从而获得高效率的相关检测。
Optical generation of tunable and narrow linewidth radio frequency signal based on mutual locking be
An integrated on-chip optical device consisting of two distributed feedback (DFB) lasers and one multimode semiconductor ring laser (SRL) has been numerically investigated. In this optical circuit, the two DFB lasers are injected into the SRL, and with th
A practical method for evaluating the three-dimensional (3D) position and velocity of a moving object used in the parabolic flight experiment is developed by using the binocular stereo vision measurement theory. The camera calibration mathematic model wit
我们研制出一台脉冲双光子激光器，其激光作用发生在原子锂的3d2D-2s2S跃迁（频率为ω31)过程中。观察到两类受激作用：（i)经频率为ω1=ω31-ωx的光脉冲激发而产生频率为ωx的相干光束；（ii)频率为ω3=ω31/2的注入光的单程放大。
期刊
The performances of ghost imaging and conventional imaging in photon shot noise cases are investigated. We define an imaging signal-to-noise ratio called SNRtranwhere only the objects transmission reg
用静电探针及Boxcar测量了TEA CO2激光器气体混合物及Ar、Ar-N2气体紫外预电离电子密度ne及电子温度Te,研究了ne,Te的时间关系特性,实验表明,Te衰减比ne衰减缓慢。本文也描述了CO2激光器气体混合物中的预电离机构.
期刊
基于单光子雪崩二极管(Single-photon avalanched diode，SPAD)阵列探测器的激光雷达系统具有单光子探测灵敏度、高时间分辨率及探测速率快等优点，在遥感测绘、目标识别和航天器着陆等领域具有广泛的应用前景。受限于当前SPAD阵列器件的较小像素规模和普遍存在的热像素等缺点，直接采用SPAD阵列所获取的三维图像质量差且成像范围小。提出了一种基于像素复用的SPAD阵列连续扫描三维成像方法以扩展成像范围，同时通过像素信息复用增加同一目标点的累积探测次数，以提高距离测量精度和三维成像质量。基
There is an increasing demand on the measurable velocity of laser interferometer in manufacturing technologies. The maximum measurable velocity is limited by frequency difference of laser source, optical configuration, and electronics bandwidth. An experi
Controlling nonadiabatic spectral redshift of high-order harmonic using two orthogonally polarized l
We investigate the nonadiabatic spectral redshift of high-order harmonic of He