2-µm GaSb-Based Optically Pumped Semiconductor Membrane Laser (MECSEL)

We present the first diode-pumped GaSb-based semiconductor membrane laser directly bonded onto a SiC heatspreader with a continuous wave (cw) output power of 1.5 W at a center wavelength of ${2.08}\ \boldsymbol{\mu} {m}$, an optical-to-optical efficiency of 11.7% and thermal resistance of 0.74 K/W.