An optical akinetic swept source (AKSS) at 1060 nm, comprising a 5 m length fiber ring cavity, a semiconductor optical amplifier (SOA) as gain medium, and a 98% reflective chirped fiber Bragg grating as a dispersive element, is described. Active mode-locking was achieved by directly modulating the current of the SOA with sinusoidal signal of frequency equal to 10 times and 20 times the cavity resonance frequency. In the static regime, linewidths as narrow as 60 pm and a tuning bandwidth of 30 nm were achieved, while a 2 mW output power, without any optical booster, was measured dynamically at a sweep speed of 100 kHz. The axial range of the AKSS was evaluated by scanning through the channeled spectrum of a Mach-Zehnder interferometer.

计算光谱成像技术相比较传统光谱成像技术具有高通量、快照成像等优点，但由于色散元件的存在，同样受到谱线弯曲的影响.为了研究谱线弯曲对计算光谱成像系统信号采集、图谱混叠与重构结果的影响，结合系统原理及重构算法，分析计算了不同谱线偏移量下系统重构图像的相对峰值信噪比及复原光谱曲线的最大偏差.实验结果表明，谱线弯曲引起的探测器采样信号的光谱偏离会导致图谱混叠程度的变化，与没有谱线弯曲的情况相比，重构结果出现明显的偏差，复原光谱曲线两侧趋于平滑.对于光谱分辨率为10 nm的计算光谱成像系统，为了高准确度的复原目标场景，谱线弯曲引起的光谱偏移量应控制在半个像元以内.

介绍研制软X射线多层膜色散元件的初步结果.结合M0/S1、W/Si色散元件的研制实例,讨论了包括设计、性能模拟计算、镀膜工艺、检测等在内的制备过程.这些元件将在Ｘ射线光学和Ｘ射线光谱学的有关研究工作中得到应用.