Progress in Research of Parametric Fluorescence in OPCPA System

Characterization of spectral broadening and contrast enhancement in cross-polarized wave generation based on gadolinium gallium garnet crystal

“…In laser systems, the contrast can be decreased by the background noise, which can be introduced in by many factors, i.e. the amplified spontaneous emission (ASE), 5) prepulses because of the extinction ratio limitation of the pulse selector, the parametric fluorescence in high-gain optical parametric preamplifiers in nanosecond domain, 6,7) and so on. With the main pulse transmitting along the amplification chain, the noise, including the temporal pedestal and the prepulses, can be amplified simultaneously.…”