A review of non-linear terahertz spectroscopy with ultrashort tabletop-laser pulses

Harold Y. Hwang, Sharly Fleischer, Nathaniel C. Brandt, Bradford G. Perkins, Mengkun Liu, Kebin Fan, Aaron Sternbach, Xin Zhang, Richard D. Averitt, Keith A. Nelson

Research output: Contribution to journalReview articlepeer-review

125 Scopus citations


Over the past decade, breakthroughs in the generation and control of ultrafast high-field terahertz (THz) radiation have led to new spectroscopic methodologies for the study of light-matter interactions in the strong-field limit. In this review, we will outline recent experimental demonstrations of non-linear THz material responses in materials ranging from molecular gases, to liquids, to varieties of solids - including semiconductors, nanocarbon, and correlated electron materials. New insights into how strong THz fields interact with matter will be discussed in which a THz field can act as either a non-resonant electric field or a broad bandwidth pulse driving specific resonances within it. As an emerging field, non-linear THz spectroscopy shows promise for elucidating dynamic problems associated with next generation electronics and optoelectronics, as well as for demonstrating control over collective material degrees of freedom.

Original languageEnglish (US)
Pages (from-to)1447-1479
Number of pages33
JournalJournal of Modern Optics
Issue number18
StatePublished - Oct 24 2015

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Publisher Copyright:
© 2014 Taylor & Francis.


  • non-linear spectroscopy
  • terahertz


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