Tunable room-temperature continuous-wave mid-infrared VCSELs V. Jayaraman, B. Kolasa, et al. During the last two years, our group has demonstrated the first room temperature continuous wave (RTCW) fixed wavelength VCSELs operating above 3 microns, in both optically pumped and electrically pumped devices. Our devices employ wafer bonding of GaSb-based active regions with GaAs-based mirrors. In this paper, we describe recent progress on tunable devices. These include CW optical