Compact 200 kHz HHG source driven by a few-cycle OPCPA. (15th December 2017)

• Record Type: Journal Article
• Authors: Harth, Anne; Guo, Chen; Cheng, Yu-Chen; Losquin, Arthur; Miranda, Miguel; Mikaelsson, Sara; Heyl, Christoph M; Prochnow, Oliver; Ahrens, Jan; Morgner, Uwe; L'Huillier, Anne; Arnold, Cord L
• Is Part Of: Journal of optics. Volume 20:Number 1(2018:Jan.)
• Publication Date: 2017-12-15
• Subjects: frequency conversion -- harmonic generation -- including higher-order harmonic generation -- ultrafast processes -- optical pulse generation and pulse compression -- optical parametric oscillators and amplifiers; 42.65.Ky -- 42.65.Re -- 42.65.Yj; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8986/aa9b04
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: We present efficient high-order harmonic generation (HHG) based on a high-repetition rate, few-cycle, near infrared (NIR), carrier-envelope phase stable, optical parametric chirped pulse amplifier (OPCPA), emitting 6 fs pulses with 9 μ J pulse energy. In krypton, we reach conversion efficiencies from the NIR to the extreme ultraviolet (XUV) radiation pulse energy on the order of ∼10 −6 with less than 3 μ J driving pulse energy. This is achieved by optimizing the OPCPA for a spatially and temporally clean pulse and by a specially designed high-pressure gas target. In the future, the high efficiency of the HHG source will be beneficial for high-repetition rate two-colour (NIR-XUV) pump-probe experiments, where the available pulse energy from the laser has to be distributed economically between pump and probe pulses.