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(a) Schematics and dimensions of the extruded planar glass substrate (not to scale) and (imaged with an optical microscope) (b) a micrograph of the cross section from the extruded product with four imbedded fiber canes illuminated and (c) an extruded channel waveguide (illuminated) with core size of 8 by .
Schematic of the setup used for the characterization of laser performance and assessment of device propagation loss.
Output power against absorbed pump power for an extruded -lead-silicate channel waveguide laser with 40% slope efficiency. Maximum output power is for an absorbed pump power of . Laser emission at is shown inset.
Plot of against- where intercept with axis gives waveguide propagation attenuation coefficient .
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