OPG
Photonic Materials

Min, B., Kippenberg, T., Yang, L., Vahala, K. J., Kalkman, J., & Polman, A. (2004). Low threshold erbium-implanted toroidal microcavity laser. In [Proceedings of Conference on Lasers and Electro-Optics (CLEO), May 2004, San Francisco] (pp. 1–3).