Fig. 2

Raman spectra collected form a rose leaf (left) and corn kernel (right) with 830 nm excitation Agilent Resolve (red) (laser power 495 mW, acquisition time 1 s) and 1064 nm excitation Rigaku Progeny (blue) (laser power 350 mW, acquisition time 40 s). Spectral resolution of Agilent Resolve is 15 cm⁻¹ and Rigaku Progeny is 8 cm⁻¹. Spectral intensity is reported in counts (cts) per milliwatt (mW) per second (s) (cts/mW*s or cts*mW⁻¹*s⁻¹)