Compression stability enhancement with low temperature-dependent SBS compressors at high repetition rates

The stimulated Brillouin scattering (SBS) pulse compression with stable compression efficiency in low temperature-dependent SBS compressors is demonstrated by suppressing the rising edge broadening under high repetition rates. Theoretical analysis reveals that the difficulty in achieving stable SBS compression is caused by the broadening of the phonon lifetime owing to thermal effect, and this undesirable fluctuation can be effectively suppressed by a low temperature-dependent medium. Reductions of 66.33% on Stokes pulse width broadening and 50% on rising time with repetition rate were achieved under 36.87% enhancement of kinematic viscosity stability. Benefiting from a stable gain coefficient, the maximum fluctuation of 3.51% in transient Stokes pulse energy was demonstrated at maximum pump power with stability enhancement of 16.28% on steady-state energy reflectivity.