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Field-resolved high-order sub-cycle nonlinearities in a terahertz semiconductor laser

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Riepl, Josef ; Raab, Jürgen ; Abajyan, P. ; Nong, H. ; Freeman, J. R. ; Li, L. H. ; Linfield, Edmund H. ; Davies, A. Giles ; Wacker, A. ; Albes, T. ; Jirauschek, C. ; Lange, Christoph ; Dhillon, S. S. ; Huber, Rupert
License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 24 Mar 2022 07:05


The exploitation of ultrafast electron dynamics in quantum cascade lasers (QCLs) holds enormous potential for intense, compact mode-locked terahertz (THz) sources, squeezed THz light, frequency mixers, and comb-based metrology systems. Yet the important sub-cycle dynamics have been notoriously difficult to access in operational THz QCLs. Here, we employ high-field THz pulses to perform the first ...


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