Merkel K D, Peters R D, Sellin P B, Repasky K S, Babbitt W R
Opt Lett. 2000 Nov 15;25(22):1627-9. doi: 10.1364/ol.25.001627.
A complex spectral grating is accumulated by repeated application of a pair of low-power optical programming pulses to a short-term persistent inhomogeneously broadened transition in Tm:YAG at 4.5 K and then probed to investigate the buildup dynamics. The necessary frequency stability is obtained by locking a cw Ti:sapphire laser to a regenerating transient spectral hole in the same transition. Grating accumulation is demonstrated for both a periodic spectral grating, representing a true-time delay, and a complex spectral grating, permitting correlation-based pattern recognition. This work is a step toward demonstrating an optical coherent transient continuously programmed continuous processor.
通过向4.5K温度下的Tm:YAG中短期持续非均匀展宽跃迁重复施加一对低功率光学编程脉冲来积累复杂光谱光栅，然后进行探测以研究其积累动力学。通过将连续波钛宝石激光器锁定到同一跃迁中的再生瞬态光谱孔来获得所需的频率稳定性。对于代表实时延迟的周期性光谱光栅和允许基于相关性的模式识别的复杂光谱光栅，都证明了光栅积累。这项工作是朝着展示光学相干瞬态连续编程连续处理器迈出的一步。
