Generation of sub-mJ terahertz pulses by optical rectification

J. A. Fülöp, L. Pálfalvi, S. Klingebiel, G. Almási, F. Krausz, S. Karsch, J. Hebling

Research output: Contribution to journalArticle

182 Citations (Scopus)


Recent theoretical calculations predicted an order-of-magnitude increase in the efficiency of terahertz pulse generation by optical rectification in lithium niobate when 500 fs long pump pulses are used, rather than the commonly used ∼100 fs pulses. Even by using longer than optimal pump pulses of 1.3 ps duration, 2.5× higher THz pulse energy (125 μJ) was measured with 2.5× higher pump-to-THz energy conversion efficiency (0.25%) than reported previously with shorter pulses. These results verify the advantage of longer pump pulses and support the expectation that mJ-level THz pulses will be available by cooling the crystal and using large pumped area.

Original languageEnglish
Pages (from-to)557-559
Number of pages3
JournalOptics Letters
Issue number4
Publication statusPublished - Feb 15 2012

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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