Figure 5From: Coupled nanowire-based hybrid plasmonic nanocavities on thin substratesQuality factor and threshold gain of the fundamental hybrid mode versus cavity length. (a) Quality factor QFP and (b) threshold gain gth of the fundamental hybrid mode as a function of cavity length L for rGaN= 40, 50, and 60 nm on thick (t=500 nm) and thin substrates (t=5 nm). An increase in QFP of 20% for thin substrates is achievable at approximately L=4 μ m. The inset in (b) is the top view of the cavity with two end-facet coatings acting as reflectors.Back to article page