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Cascaded difference-frequency generation using tailored optical spectra for highly efficient terahertz sources

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Abstract

We describe cascaded difference-frequency generation (DFG) between multiple laser-lines generating terahertz pulses at >10% energy-conversion efficiency. DFG initiated by a laser-line and weak laser-seed rapidly cascades to self-generate multiple laser-lines and produce exponential terahertz growth.

© 2016 Optical Society of America

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