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Optics Letters

Optics Letters


  • Vol. 25, Iss. 24 — Dec. 15, 2000
  • pp: 1798–1800

Noise suppression in femtosecond mid-infrared light sources

Peter Hamm, Robert A. Kaindl, and Jens Stenger  »View Author Affiliations

Optics Letters, Vol. 25, Issue 24, pp. 1798-1800 (2000)

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An experimental and theoretical study of intrinsic correlations and noise-suppression mechanisms in two-stage femtosecond mid-IR light sources is presented. The setup, based on parametric amplification in BBO and subsequent difference-frequency mixing in AgGaS2, delivers ≈100-fs mid-IR pulses with 1–2-μJ energy. Exceptionally low pulse-energy fluctuations of only 0.2% in the mid-IR (λ ≈ 3–6 μm) are found, which are much smaller than the Ti:sapphire amplifer noise. The noise suppression is analyzed and found to stem from the interplay between dispersion and pump depletion.

© 2000 Optical Society of America

OCIS Codes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

Peter Hamm, Robert A. Kaindl, and Jens Stenger, "Noise suppression in femtosecond mid-infrared light sources," Opt. Lett. 25, 1798-1800 (2000)

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