VUV Frequency Comb by Cavity-Enhanced High Harmonic Generation on Solid Surfaces

Using an enhancement cavity, a sub-Watt power Ti:sapphire femtosecond frequency comb is enhanced to 24 W and 3rd, 5th and 7th harmonics are generated in a non-perturbative manner on the surface of thin AlN layer.EU Horizon 2020 , No. 664732 (“nuClock”) and No. 820404 („iqClock“); WWTF No. MA16 -066 (“SEQUEX”); Spanish Ministry of Economy and Competitiveness through "Plan Nacional" (FIS2017 -85526 -R). KACST -KAUST - UCSB Solid State Lighting Program.Postprint (published version