Figure 3
From: Orientational Mapping Augmented Sub-Wavelength Hyper-Spectral Imaging of Silk

Polarisation discriminated absorbance spectra of pristine (a) and laser 515 nm/230 fs irradiated (b) silk fiber; laser pulse energy was 8.5 nJ and pulse-to-pulse separation of 2 μm in xy-array. Area of laser patterning was 10 × 10 μm2; IR beam diameter at focus on the sample was 4.2 μm.