Fig. 1. Schematic of GaN PCSS device (Ti/Al/Ni/Au: 20 nm/120 nm/55 nm/45 nm)

Fig. 2. Pulse width of laser (355 nm, 80 ps, 500 Hz) waveform and circuit diagram of the test-setup for evaluation of the on-state performance of the GaN PCSS

Fig. 3. Profile images and energy distribution along the y axis of Gaussian beam, falt-top beam

Fig. 4. Output voltage waveform diagrams, efficiency comparison charts at different laser energy levels under an 800 V charging voltage, and a comparative voltage waveform diagram at 500 μJ laser energy

Fig. 5. Output voltage waveforms and voltage conversion efficiency scatter plot under same laser pulse energy (500 μJ)