Laser-diode-seeded operation of a femtosecond optical parametric amplifier with MgO : LiNbO3 and generation of 5-cycle pulses near 3 mu m

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A high-power traveling-wave optical parametric amplifier based on MgO:LiNbO3 that is capable of producing extremely short pulses in the 3-mu m spectral range when pumped by a femtosecond Ti:sapphire amplifier near 800 nm has been developed. With seeding by 1-ns pulses from a low-power Q-switched microlaser, we demonstrate idler tunability between 3.1 and 3.9 mu m at >10-mu J pulse energy and <200-fs pulse duration. The maximum internal conversion efficiency is 40% for a single pass. The extremely high gain factors achieved permit a more compact solution for the seed source, and we also report on successful seeding with a pulsed laser diode in the femtosecond regime, achieving 5-mu J pulse energy and 130-fs pulse duration near 3.5 pm. We have produced nearly transform-limited 50-fs, 2-mu J pulses near 3 mu m with a 1-mm-thick MgO:LiNbO3 sample by adding a second pass and employing sub-30-fs pumping. (C) 1999 Optical Society of America [S0740-3224(99)02709-5]
Publisher
OPTICAL SOC AMER
Issue Date
1999-09
Language
English
Article Type
Article
Keywords

REPETITION-RATE; MIDINFRARED PULSES; LITHIUM-NIOBATE; AMPLIFICATION; OSCILLATOR; CRYSTAL; CONVERSION; SYSTEM; REGION; POWER

Citation

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, v.16, no.9, pp.1539 - 1545

ISSN
0740-3224
DOI
10.1364/JOSAB.16.001539
URI
http://hdl.handle.net/10203/212800
Appears in Collection
PH-Journal Papers(저널논문)
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