New compressor delivers above-terawatt 1.5-cycle pulses at kilohertz repetition rate

Researchers at the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI) have reached a new milestone in few-cycle pulse generation, breaking a 10-year-old record and achieving 1.5-optical-cycle-long laser pulses with 1.2 terawatt peak power by a new high-energy hollow fiber compressor beamline. The intense pulses will be used to generate intense attosecond harmonic radiation for nonlinear XUV spectroscopy studies.