Figure 4From: Inactivation of viruses by coherent excitations with a low power visible femtosecond laserThe number of plaques as a function of the excitation laser power density for a M13 bacteriophage sample with nominally prepared 1.1 × 103 pfu. The sharp cut-off for the number of plaques at around 50 MW/cm2 is indicative of the onset of the inactivation of the M13 bacteriophages.Back to article page