Université de Neuchâtel

Broadband terahertz pulse generation driven by an ultrafast thin-disk laser oscillator

Clément, Paradis ; Drs, Jakub ; Modsching, Norbert ; Razskazovskaya, Olga ; Meyer, Frank ; Kränkel, Christian ; Saraceno, Clara J ; Wittwer, Valentin J ; Südmeyer, Thomas

In: Optics Express, 2018, vol. 26, no. 20, p. 26377-26384

We demonstrate broadband THz generation driven by an ultrafast thin-disk laser (TDL) oscillator. By optical rectification of 50-fs pulses at 61 MHz repetition rate in a collinear geometry in crystalline GaP, THz radiation with a central frequency at around 3.4 THz and a spectrum extending from below 1 THz to nearly 7 THz are generated. We realized a spectroscopic characterization of a GaP crystal...