Abstract
In this paper, we analyze the coupling of light from a GaAs microdisk
laser into a waveguide. Starting from an air cladding, we examine several
configurations to couple light into the waveguide with different cladding
structures aimed to foster light coupling into the waveguide: photonic
crystal and metallic (plasmonic cladding). In these coupling schemes, we
tried to optimize the coupling of the emitted light into the waveguide,
while maintaining a reasonable quality factor to allow the lasing operation
of the device. We show that a plasmonic layer, introduced beside the
waveguide can lead to a significant improvement in the coupling efficiency,
reaching an efficiency close to 80%.
© 2009 IEEE
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