Fig. 7.9, Variation of dot-like structure size on polyimide coating (a), soda lime glass (b), fused silica glass (c) for different laser pulse energies. The laser wavelength is 800 nm and the pulse duration 100 fs. The focusing polystyrene particle sizes are 1.7 µm and 3.5 µm in diameter except for the fused silica substrate; here only 3.5 µm beads have been used