Fig. 1. Schematic of experimental circuit

Fig. 2. Experimental platform for 4 parallel GaAs-PCSS triggering test

Fig. 3. Conducting current of each PCSS when 1, 2, 3 or 4 PCSSs are triggered

Fig. 4. Percentage of conducting current of each PCSS when triggered at different laser energy or trigger time

Fig. 5. Designs and pictures of split and integrated multi-channel GaAs-PCSS

Fig. 6. Cumulative graph of load output waveforms (up) and bias voltage (down) of the integrated multi-channel GaAs-PCSS during 7 000 shots

Fig. 7. Photos of the integrated 20-channel GaAs-PCSS before (a) and after (b) 7 000 shots, and a photo of a damaged normal GaAs-PCSS (c)