Coherent Transient Continuous Optical Processing in a Solid

Miao Zhu, C. M. Jefferson, W. Babbitt
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Abstract

When a sequence of temporally modulated optical waveforms illuminate an inhomogeneously broadened absorbing medium, the resultant optical coherent transient output signal's represents the cross-correlation or convolution of the input temporal waveforms.1 The projected performance characteristics of coherent transient processors include data rates greater than 10 GHz, time-bandwidth products far in excess of 10,000, and the ability to fully process both amplitude and phase modulated waveforms.1,2 Previously it was assumed that the input data stream and pattern stream must both be shorter than the absorbing transition's homogeneous dephasing time and must both be reentered in order to process longer or multiple data streams.1 It has recently been proposed that patterns could be permanently stored in an inhomogeneously broadened solid and that input data streams of indefinite length could be continuously processed in real time without the need to reenter the input pattern.3,4 In this paper, we present a proof of concept demonstration of an optical coherent transient continuous correlator.
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固体中的相干瞬态连续光学处理
当一串时间调制的光波形照射不均匀加宽的吸收介质时,得到的光相干瞬态输出信号表示输入时间波形的互相关或卷积相干瞬态处理器的预期性能特征包括数据速率大于10ghz,时间带宽产品远远超过10,000,以及完全处理幅度和相位调制波形的能力。1,2以前假设输入数据流和模式流都必须短于吸收跃迁的均匀脱相时间,并且都必须重新进入,以便处理更长的或多个数据流最近有人提出,模式可以永久存储在非均匀扩展的实体中,无限长度的输入数据流可以实时连续处理,而无需重新进入输入模式。在本文中,我们提出了一种光学相干瞬态连续相关器的概念验证演示。
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