The Cobolt Zouk is a compact continuous-wave diode-pumped solid-state (DPSS) laser operating at 355 nm. Released by Cobolt AB, it delivers 10 mW of output power and a TEM00 beam with M2 <1.1. Suitable for fluorescence-based bioanalysis and semiconductor inspection, the laser is built into a hermetically sealed package measuring 80 × 60 mm. It uses proprietary HTCure technology for robustness and long lifetime. The single-mode device produces noise of <0.3% rms and a typical spectral linewidth of <30 at 30 MHz. It is supplied with an ultracompact controller that can be accessed remotely for operating and monitoring the laser system via a digital USB or an analog interface.