We report a pulsed waveguide laser working at 1944 nm, mode-locked with a saturable absorber consisting of a graphene film deposited on an output coupler mirror. The waveguide is created into a ceramic Thulium-doped Yttrium Aluminium Garnet by ultrafast laser inscription. Q-switched mode-locking is achieved, with 6.5 mW average output power and ~7.8 GHz pulse rate. This is a convenient, compact, high repetition rate laser for various applications, such as medical diagnostics and spectroscopy.
|Journal||IEEE Journal of Selected Topics in Quantum Electronics|
|Publication status||Published - 1 Jan 2015|
Ren, Y., Brown, G., Mary, R., Demetriou, G., Popa, D., Torrisi, F., Ferrari, A. C., Chen, F., & Kar, A. K. (2015). 7.8-GHz Graphene-Based 2-μm Monolithic Waveguide Laser. IEEE Journal of Selected Topics in Quantum Electronics, 21(1), . https://doi.org/10.1109/JSTQE.2014.2350016