Fig. 3: Evolution of the laser spectrum.
From: Dual-chirped optical parametric amplification of high-energy single-cycle laser pulses
Input seed spectrum for advanced DC-OPA (black solid line with filling), output of the pre-amplifier based on MgO:LiNbO3 (blue solid line with filling), output of the first amplifier based on BiBO and MgO:LiNbO3 (orange solid line with filling), output of the second amplifier based on BiBO and MgO:LiNbO3 (green solid line with filling) and output of the third amplifier based on BiBO and MgO:LiNbO3 (pink solid line with filling and red solid line with filling for the central wavelength of 2.05 and 2.44 µm, respectively).
