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Opt Express. 2008 Nov 10;16(23):18863-8.

Ultrabroadband noncollinear optical parametric amplification with LBO crystal.

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  • 1International Cooperative Research Project (ICORP), Japan Science and Technology Agency, Kawaguchi, Saitama, Japan.


Ultrabroadband visible noncollinear optical parametric amplification (NOPA) was achieved in an LBO crystal, with a continuum seed pulse generated from a sapphire plate. The spectral bandwidth of the amplified visible pulse was about 200 nm, which can support sub-5 fs pulse amplification. An amplified output of 0.21 microJ with an average gain of about 210 was achieved. This provides, to the best of our knowledge, the first-time demonstration of such broadband amplification with a biaxial nonlinear optical crystal. Both the simulation and experimental results indicate that the LBO has a great potential as nonlinear medium in power amplifier for TW to PW noncollinear optical parametric chirped pulse amplification (NOPCPA) systems.

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