Figure 2

The PA image of Group 5 Element 6 scanned within an area of 56 × 101 μm2 with steps of 1 μm acquired at optical wavelength (a) 532 nm from harmonic generation unit, (b) 650 nm, (c) 697 nm, (d) 732 nm, (e) 785 nm, and (f) 880 nm, respectively from supercontinuum output.