Ultra-broad bandwidth parametric amplification at degeneracy

Optics Express (Impact Factor: 3.49). 10/2005; 13(19):7386-92. DOI: 10.1364/OPEX.13.007386
Source: PubMed


We report on a novel approach of ultra-broad bandwidth parametric amplification around degeneracy. A bandwidth of up to 400 nm centered around 800 nm is amplified in a BBO crystal by using chirped pump pulses with a bandwitdth as broad as 10 nm. A supercontinuum signal is generated in a microstructured fiber, having to first order a quadratic chirp, which is necessary to ensure temporal overlap of the interacting waves over this broad bandwidth. Furthermore, we discuss the potential of this approach for an octave-spanning parametric amplification.

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Available from: Eric Cormier, Dec 28, 2013
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    • "In this case this approach allows for the parametric amplification of an octave spanning spectral width. The obtained estimation is in a good agreement with experimental results presented in [22]. We note, that chirped pump pulse can be used also to broaden a bandwidth of nondegenerate OPA [44], [45]. "
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    • "Additionally, it has been shown that the pulses provided by such fiber chirped pulse amplifier systems (FCPA) are suitable for efficient pumping of ultrashort-pulseparametric amplifiers at MHz repetition rates [3] [4] [5] [6] [7]. The enormous amplification bandwidth of the OPA, especially in a non-collinear (NOPA) configuration [8] [8] or at degeneracy [10], enables the generation of ultrashort pulses. Furthermore, a high gain can be achieved in just few millimeter long crystals, and therefore, the B-integral (accumulated nonlinear phase) is typical negligible. "
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