Figure 6

(a) PL spectrum from the core of waveguides written at 1,000 and 4,000Â mm/min and from a pristine area using 785Â nm excitation. (b) The 2-D intensity map of the PL across the waveguide written at 1,000Â mm/min with 90Â nJ of energy.

(a) PL spectrum from the core of waveguides written at 1,000 and 4,000Â mm/min and from a pristine area using 785Â nm excitation. (b) The 2-D intensity map of the PL across the waveguide written at 1,000Â mm/min with 90Â nJ of energy.