Narrow linewidth ring laser with frequency doubling for Titanium:Sapphire and dye operation

摘要

We present a ring laser system that offers convenient exchange between titanium: sapphire and dye operation. Different approaches reduce the short-term linewidth of the system, such as lock to the side of a fringe of a reference etalon and using a Pound-Drever-Hall scheme, can be used for both configurations and are evaluated. Furthermore, titanium:sapphire and dye versions are compared regarding: efficiency, tuning range, linewidth, single-mode scan range, amplitude-noise and second harmonic generation.