Figure 7
From: Prospects for a novel ultrashort pulsed laser technology for pathogen inactivation
Gel electrophoresis experiments on double-stranded DNAs. #1 is the control without magnetic stirring showing the presence of super-coiled, linear and circular DNAs; #2 is another control with magnetic stirring; #3 is the laser-irradiated sample with magnetic stirring. The visible femtosecond laser is operated at 425 nm, at a repetition rate of 80 MHz, with an average power of 100 mWs, laser spot size of about 100 micron, and laser irradiation time of 1 hr.