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Parametric generation in β-barium borate of intense femtosecond pulses near 800 nm

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Abstract

We use amplified colliding-pulse, mode-locked dye-laser pulses of 150-μJ energy to pump a two-stage, single-path parametric converter of β-barium borate (β-BBO). The wavelength-noncritical phase-matching condition in β-BBO at 620 nm permits generation of 200-fs signal pulses with at least the bandwidth of the pump. At 830 nm the overall energy conversion efficiency is 17%. This is an efficient, tunable way to produce near-IR pulses as an alternative to continuum generation. The signal is used for amplification in IR dye and titanium-sapphire and for continuum generation. The input/output characteristics of the parametric generator are presented. Additionally, we observe off-axis parametric generation followed by sum-frequency generation for pump pulse intensities larger than 5 GW/cm2.

© 1991 Optical Society of America

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Corrections

W. Joosen, H. J. Bakker, L. D. Noordam, H. G. Muller, and H. B. van Linden van den Heuvell, "Parametric generation in β-barium borate of intense femtosecond pulses near 800 nm," J. Opt. Soc. Am. B 8, 2537-2543 (1991)
https://opg.optica.org/josab/abstract.cfm?uri=josab-8-12-2537

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