High energy femtosecond OPA pumped by 1030 nm Yb: KGW laser

We present a traveling-wave-type optical parametric amplifier (OPA) pumped at 1.03 Amm by a Yb: KGW laser that produces tunable high-energy pulses of 6.5-4 AmJ in the mid-infrared (mid-IR) region from 3.6 to 7 Amm. Pumping with negatively chirped pulses generates nearly transform-limited (TL) mid-IR...

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Bibliographic Details
Published in:Optics communications 2012-10, Vol.285 (21-22), p.4515-4518
Main Authors: Kozich, V, Moguilevski, A, Heyne, K
Format: Article
Language:English
Subjects:
Compressing
Femtosecond
Fingerprints
Infrared
Lasers
Optical pumping
Parametric amplifiers
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Summary:We present a traveling-wave-type optical parametric amplifier (OPA) pumped at 1.03 Amm by a Yb: KGW laser that produces tunable high-energy pulses of 6.5-4 AmJ in the mid-infrared (mid-IR) region from 3.6 to 7 Amm. Pumping with negatively chirped pulses generates nearly transform-limited (TL) mid-IR pulses of 300-330 fs length. Pumping with TL pulses of 200 fs not only decreases the output energy by a factor of 1.5, but also decreases the mid-IR pulse-length to 160 fs after additional compression. The compact and simple OPA setup is ideal for femtosecond infrared experiments in the fingerprint region.
ISSN:0030-4018
DOI:10.1016/j.optcom.2012.06.077