  We present the design, fabrication and characterization of cubic (3C) silicon
carbide microdisk resonators with high quality factor modes at visible and near
infrared wavelengths (600 - 950 nm). Whispering gallery modes with quality
factors as high as 2,300 and corresponding mode volumes V ~ 2 ({\lambda}/n)^3
are measured using laser scanning confocal microscopy at room temperature. We
obtain excellent correspondence between transverse-magnetic (TM) and
transverse-electric (TE) polarized resonances simulated using Finite Difference
Time Domain (FDTD) method and those observed in experiment. These structures
based on ensembles of optically active impurities in 3C-SiC resonators could
play an important role in diverse applications of nonlinear and quantum
photonics, including low power optical switching and quantum memories.
