Near-IR Subwavelength Microdisk Lasers

Abstract

We report single-mode lasing in subwavelength GaAs disks under optical pumping. The disks are fabricated by standard photolithography and two steps of wet chemical etching. The simple fabrication method can produce submicron disks with good circularity, smooth boundary and vertical sidewalls. The smallest lasing disks have a diameter of 627 nm and thickness of 265 nm. The ratio of the disk diameter to the vacuum lasing wavelength is about 0.7. Our numerical simulations confirm that the lasing modes are whispering-gallery modes with the azimuthal number as small as 4 and very small mode volume.

12pages 4figures

References in corpus (1)

• Subwavelength Nanopatch Cavities for Semiconductor Plasmon Lasers

Cited by in corpus (13)

• Room temperature plasmon laser by total internal reflection
• Nonlinear and Quantum Optics with Whispering Gallery Resonators
• Pushing the Limit of High-Q Mode of a Single Subwavelength Dielectric Nanocavity
• Lasing action in single subwavelength particles supporting supercavity modes
• Whispering-gallery-mode based CH3NH3PbBr3 perovskite microrod lasers with high quality factors
• Strong Coupling between On Chip Notched Ring Resonator and Nanoparticle
• Experimental Test of a Two-dimensional Approximation for Dielectric Microcavities
• Directional waveguide coupling from a wavelength-scale deformed microdisk laser
• The combination of directional outputs and single-mode operation in circular microdisk with broken PT symmetry
• End-fire injection of guided light into optical microcavity
• Inversed Vernier effect based single-mode laser emission in coupled microdisks
• Quasi-guiding modes in microfibers on high refractive index substrate
• Suspended single mode microdisk lasers