Miniaturized wavelength stabilized laser module emitting at 619 nm

We successfully designed and manufactured a semiconductor based miniaturized laser module operating at ambient room temperature at 619 nm to improve research and scaling of tin-diamond colour centres-based quantum repeaters. As design models we used thermal and optical simulations. An externally stabilized semiconductor laser is used. The wavelength stabilization is performed by a fibre Bragg grating, written into a single mode polarization maintaining FC/APC-fibre. We used a 14-pin butterfly module with an internal temperature of -20ºC. We demonstrated more than 10 mW at 619 nm ex fibre.