A robust, high-power amplifier design allows for generation of >1 MW, few-cycle pulses from a 100 MHz, 1550 nm Er:fiber frequency comb. With this source, we explore non-perturbative harmonic generation in the UV-visible in solids. In zinc oxide (ZnO) crystal, nearly continuous spectra spanning 200-700 nm are achieved and the dependence on the carrier-envelope-phase is observed and analyzed using carrier-envelope amplitude modulation spectroscopy (CAMS).

© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Kristina Chang, Daniel Lesko, and Scott Diddams, "High-harmonic generation in solids with a megawatt-level, few-cycle Er:fiber frequency comb," Proc. SPIE PC12405, Nonlinear Frequency Generation and Conversion: Materials and Devices XXII, PC1240504 (Presented at SPIE LASE: January 30, 2023; Published: 17 March 2023); https://doi.org/10.1117/12.2655650.6321498066112.