Journal
OPTICS LETTERS
Volume 44, Issue 11, Pages 2791-2794Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.44.002791
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- Science and Engineering Research Council (SERC) [1426500050, 1426500051]
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We report a carrier-envelope-phase-stable 3 mu m optical parametric chirped-pulse amplifier (OPCPA), based on periodically poled stoichiometric lithium tantalate nonlinear crystals, which delivers 306 mu J pulse energy at 10 kHz repetition rate and 61 fs pulse width. A 2 mm thick YAG crystal is employed to further compress the pulses to 21 fs corresponding to two-cycle pulse duration, with no ionization loss observed. Driven by the OPCPA, high-order harmonics up to the 15th order are generated in ZnO crystal, and one-order enhancement of the harmonics intensity is demonstrated with nonlinear compression. (c) 2019 Optical Society of America
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