Generation of few-cycle laser pulses with high temporal contrast via nonlinear elliptical polarisation rotation in a hollow fibre compressor. (20th August 2019)

• Record Type: Journal Article
• Authors: Khodakovskiy, N G; Kalashnikov, M P; Pajer, V; Blumenstein, A; Simon, P; Toktamis, M M; Lozano, M; Mercier, B; Cheng, Z; Nagy, T; Lopez-Martens, R
• Is Part Of: Laser physics letters. Volume 16:Number 9(2019:Sep.)
• Publication Date: 2019-08-20
• Subjects: temporal contrast -- ultrafast lasers -- post-compression; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/ab3852
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: We report on the simultaneous temporal filtering and compression of 30 fs laser pulses down to 5 fs duration via nonlinear elliptical polarization rotation (NER) in a stretched flexible hollow fibre compressor. Both the achieved 2-cycle pulse duration and the internal conversion efficiency of ̃47% are solely limited by the applied fibre geometry. Our investigations show that precise control of the NER process could help significantly improve the temporal fidelity of high-energy hollow fibre compression schemes.