Université de Neuchâtel

New frontiers of ultrafast thin-disk laser oscillators for applications in metrology and the generation of THz and XUV radiation

Modsching, Norbert Paul ; Südmeyer, Thomas (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2019.

Ultrafast laser systems find application as versatile tool in industry and science. Ultrafast laser systems based on Ti:sapphire – the workhorse in ultrafast science – operate typically at kHz repetition rates and benefit from the available broad gain bandwidth for the direct generation of sub 100-fs pulse durations. However, thermal effects in the gain medium due to a high quantum defect...

Université de Neuchâtel

Extreme ultraviolet light source at a megahertz repetition rate based on high-harmonic generation inside a mode-locked thin-disk laser oscillator

Labaye, François ; Gaponenko, Maxim ; Wittwer, Valentin J ; Diebold, A ; Paradis, Clément ; Modsching, Norbert Paul ; Merceron, Loïc ; Emaury, F ; Graumann, I.J ; Phillips, C.R ; Saraceno, C.J ; Kränkel, C ; Keller, Ursula ; Südmeyer, Thomas

In: Optics Letters, 2017, vol. 42, no. 24, p. 5170-5173

We demonstrate a compact extreme ultraviolet (XUV) source based on high-harmonic generation (HHG) driven directly inside the cavity of a mode-locked thin-disk laser oscillator. The laser is directly diode-pumped at a power of only 51 W and operates at a wavelength of 1034 nm and a 17.35 MHz repetition rate. We drive HHG in a high-pressure xenon gas jet with an intracavity peak intensity of...