3:30pm - 4:00pmInvitedID: 538
/ TOM8 S01: 1
TOM 8 Ultrafast Optics
Mid infrared ultrashort pulse generation by pulse compression and intrapulse difference frequency generation
Patrick Georges1, Quentin Bournet1,2, Michele Natile2, Jonusas Mindaugas3, Florent Guichard2, Yoann Zaouter2, Manuel Joffre3, Adeline Bonvalet3, Frederic Druon1, Marc Hanna1
1Institut d’Optique Graduate School / CNRS / Université Paris-Saclay, France; 2Amplitude; 3Laboratoire d’Optique et Biosciences, Ecole Polytechnique, CNRS, INSERM, Institut Polytechnique de Paris
New Ytterbium based femtosecond lasers system are very interesting systems due to their high repetition rate / average power, compactness and long term stability due to direct diode pumping. Associated with nonlinear compression schemes (multipass cell or capillary), few cycle pulses are now available at around 1 µm. This presentation will present our recent work in this field and the extension of these sources in the mid-infrared by using intrapulse difference frequency generation and amplification to cover the 4 – 20 µm spectral range with high conversion efficiency. An optimization of the polarization state and chirp of the input pulses and a temporal synchronization leads to sub-two optical cycles CEP stable pulses at 8 µm with hundreds of mW average power (> µJ energy per pulses at 250 kHz).