The injection locking properties of a newly developed waveguide-based external cavity semiconductor laser have been investigated. Using the injection locking properties to measure the Q -factor of complex optical cavities with unknown internal losses, has been demonstrated for the first time.
Fan, Y., Oldenbeuving, R., Khan, M. R. H., Roeloffzen, C. G. H., Klein, E. J., Lee, C. J., ... Boller, K. J. (2014). Q-factor measurements through injection locking of a semiconductor-glass hybrid laser with unknown intracavity losses. Optics letters, 39(7), 1748-1751. https://doi.org/10.1364/OL.39.001748