Abstract
We fabricated second-order nonlinear gratings in D-shaped germanosilicate fibers, using thermal poling and periodic electrodes defined by standard photolithography. These gratings, which are up to 75 mm long, were used for efficient quasi-phase-matched frequency doubling of nanosecond pulses from a high-power erbium-doped fiber amplifier. Average second-harmonic powers as high as 6.8 mW and peak powers greater than 1.2 kW at 766 nm were generated, with average and peak conversion efficiencies as high as 21% and 30%, respectively.
© 1999 Optical Society of America
Full Article | PDF ArticleMore Like This
S. Wang, V. Pasiskevicius, J. Hellström, F. Laurell, and H. Karlsson
Opt. Lett. 24(14) 978-980 (1999)
G. Imeshev, M. M. Fejer, A. Galvanauskas, and D. Harter
Opt. Lett. 26(5) 268-270 (2001)
J.-P. Meyn, M. E. Klein, D. Woll, R. Wallenstein, and D. Rytz
Opt. Lett. 24(16) 1154-1156 (1999)