Sb-based VCSEL operating at 2.3 $\mu$m in continuous wave regime up to 350 K with a TEM$_{00}$ beam

we report on the growth by MBE and characterization of a laser diode pumped Vertical Cavity Surface Emitting Laser, where the optical cavity is formed by the Bragg mirror, an air gap and a dielectric concave mirror. The laser operates at 2.43 pm in continuous wave regime up to 350K with a circular TEM 00 beam.