Structured Nanoaperture Vertical Cavity Surface-Emitting Lasers

Content Provider	CiteSeerX
Author	Sulkin, Joshua D. Ferreira, Placid M. Choquette, Kent D.
Abstract	Abstract—We report nanoscale patterning of concentric ring-shaped metal corrugations around a subwavelength aperture in Ag deposited on the top facet of a vertical cavity surface-emitting laser. The presence of the patterned rings results in more than doubling the collected far-field power and a significant reduction in far-field angular width. These plasmonic aperture lasers thus have the unique property of both a small near-field spot and a relatively low beam divergence. Finite-difference time-domain simulations are consistent with the experimental results and show that the far-field pattern is highly sensitive to misalignment of the aperture and to the presence of multiple transverse laser modes. Index Terms—Low divergence, plasmonic aperture, vertical-cavity surface-emitting laser (VCSEL). I.
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Subject Keyword	Subwavelength Aperture Significant Reduction Far-field Power Top Facet Far-field Pattern Low Beam Divergence Patterned Ring Result Plasmonic Aperture Laser Far-field Angular Width Vertical-cavity Surface-emitting Laser Vertical Cavity Surface-emitting Laser Concentric Ring-shaped Metal Corrugation Finite-difference Time-domain Simulation Index Term Low Divergence Nanoscale Patterning Plasmonic Aperture Experimental Result Unique Property Small Near-field Spot Multiple Transverse Laser Mode
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