Compact and versatile OPG-OPA based on a periodically poled nonlinear crystal pumped by femtosecond Ytterbium fiber laser

Valerian Freysz (1) , Gabriel Amiard-Hudebine , Yoann Zaouter (2) , Eric Freysz (3)

1 LaSIE - Laboratoire des Sciences de l'Ingénieur pour l'Environnement - UMR 7356
2 Amplitude Systèmes
3 LOMA - Laboratoire Ondes et Matière d'Aquitaine

A 10 mm long PPLN crystal pumped by 125 nJ, 250 fs pulses centered at 1035 nm yielded by Yb3+ femtosecond fiber oscillator generates femtosecond signal and idler pulses tunable in the 1.35 µm-1.65 µm and 2.6 µm-4.2 µm spectral ranges. A numerical model accounting for both second-and third-order nonlinear processes well agree with the recorded signal conversion efficiency (up to 42%), the spectral and temporal profile of the generated pulses. Pulse to pulse stability is drastically improved injecting this compact and versatile device with a continuum generated in a photonic fiber. Further improvements are discussed.

Mots clés: Optical parametric amplification; Parametric generation; Three-waves mixing; Femtoseconde pulse; Chirped pulse; Ytterbium fiber laser; PPLN crystal; Continuum generation

Domaines: Optique [physics.optics]

Valerian Freysz, Gabriel Amiard-Hudebine, Yoann Zaouter, Eric Freysz. Compact and versatile OPG-OPA based on a periodically poled nonlinear crystal pumped by femtosecond Ytterbium fiber laser. Photonic West 2019, SPIE, Feb 2019, San Francisco, United States. ⟨10.1117/12.2505769⟩. ⟨hal-02358935⟩