Adaptive Sampling for Terahertz Time-Domain Spectroscopy and Imaging
Publication in refereed journal

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其它資訊
摘要We propose an adaptive sampling algorithm to improve the acquisition efficiency for terahertz time-domain spectroscopy (THz-TDS). Most THz-TDS measurements scan the delay line with constant speed and the data acquired have constant time steps. Our algorithm exploits the fact that the useful information within THz signals tends to cluster at certain positions: efficient sampling can be done by adaptively increasing the sample rate in regions containing more interesting features. The algorithm was implemented by programming a linear optical delay line. Depending on the experiment parameters, the sampling time of a pulse can be reduced by a factor of 2-3 with only slight degradation in accuracy, possible sources of error are discussed. We show how adaptive sampling algorithms can improve the acquisition time in applications where the main pulse is the primary concern.
著者Yuezhi He, Edward Parrott, Emma Pickwell‐MacPherson
期刊名稱IEEE Transactions on Terahertz Science & Technology
出版年份2017
月份3
卷號7
期次2
出版社Institute of Electrical and Electronics Engineers (IEEE)
頁次118 - 123
國際標準期刊號2156-342X
電子國際標準期刊號2156-3446
語言美式英語
關鍵詞Adaptive sampling, delay line, terahertz (THz)

上次更新時間 2020-27-11 於 02:13