Generation of 10 μj ultrashort terahertz pulses by optical rectification

K. L. Yeh, M. C. Hoffmann, J. Hebling, Keith A. Nelson

Research output: Contribution to journalArticle

470 Citations (Scopus)

Abstract

Generation of near single-cycle pulses centered at 0.5 THz frequency with up to 10 μJ energy, 100 μW average power, and 5.0 MW peak power was demonstrated by tilting the intensity front of a femtosecond optical pump pulse from a 10 Hz Ti:sapphire laser to match the phonon-polariton phase velocity to the group velocity of the pump pulses in a lithium niobate crystal. Terahertz pulse intensity as high as 10 MW cm2 was achieved. The photon conversion efficiency was 45% and the calculated peak electric field strength at the focus of an off-axis parabolic mirror was 250 kVcm.

Original languageEnglish
Article number171121
JournalApplied Physics Letters
Volume90
Issue number17
DOIs
Publication statusPublished - 2007

Fingerprint

rectification
pulses
pumps
electric field strength
lithium niobates
phase velocity
group velocity
polaritons
sapphire
mirrors
cycles
photons
crystals
lasers
energy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Generation of 10 μj ultrashort terahertz pulses by optical rectification. / Yeh, K. L.; Hoffmann, M. C.; Hebling, J.; Nelson, Keith A.

In: Applied Physics Letters, Vol. 90, No. 17, 171121, 2007.

Research output: Contribution to journalArticle

Yeh, K. L. ; Hoffmann, M. C. ; Hebling, J. ; Nelson, Keith A. / Generation of 10 μj ultrashort terahertz pulses by optical rectification. In: Applied Physics Letters. 2007 ; Vol. 90, No. 17.
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