Quantum Technologies have sparked interest in recent years for a wide range of exciting technology demonstrations. One example, the generation and manipulation of laser-cooled atoms, promises to augment the capabilities of atomic clocks, enable precision navigation units capable of operating without GPS support, and boost the sensitivity of magnetometers to allow new insights into brain-function. As a result, the UK government Industrial Strategy identifies Quantum Technologies as a field that will underpin future economic growth for the UK. While these demonstrations have illustrated the exciting potential of Quantum Technologies, it is now time to move the technology out of the lab and into real-world devices. At present, devices are often too large, heavy, power-hungry and expensive for this to be feasible. One of the key enabling technologies behind these applications is the narrow-linewidth laser. This 4-year EngD project will take packaging techniques developed for the high-reliability, low-cost and volume-sensitive requirements of the telecoms market and apply these techniques to the lasers, optics and modulators required by Quantum Technologies. The resulting products will be tested in cutting-edge Quantum Technology applications.