Figure 3

(a) Optical image of inscribed surface using 5 mW of laser writing power at a scan speed of 0.1 μm/s, (b) locations on surface where Raman spectra of R6G is acquired, (c) Raman spectra acquired from regions A, B, C and D.

(a) Optical image of inscribed surface using 5 mW of laser writing power at a scan speed of 0.1 μm/s, (b) locations on surface where Raman spectra of R6G is acquired, (c) Raman spectra acquired from regions A, B, C and D.