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1.
Opt Lett ; 42(18): 3698-3701, 2017 Sep 15.
Article in English | MEDLINE | ID: mdl-28914936

ABSTRACT

We demonstrate phase-matched difference frequency generation in the emerging nonlinear crystal La3Ga5.5Ta0.5O14. Tunable wavelengths between 1.4 and 4.7 µm are generated by using femtosecond sources. We also report on the measurements of the optical damage threshold in the femtosecond regime and on the nonlinear refractive index n2.

2.
Opt Lett ; 42(5): 891-894, 2017 Mar 01.
Article in English | MEDLINE | ID: mdl-28248324

ABSTRACT

We report on a laser source operating at 100 kHz repetition rate and delivering 8 µJ few-cycle mid-IR pulses at 3 µm. The system is based on optical parametric amplification pumped by a high repetition rate Yb-doped femtosecond fiber-chirped amplifier. This high-intensity ultrafast system is a promising tool for strong-field experiments (up to 50 GV/m and 186 T) in low ionization potential atomic and molecular systems, or solid-state physics with coincidence measurements. As a proof of principle, up to the sixth harmonic has been generated in a 1 mm zinc selenide sample.

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