S. Ishibashi, K. Naganuma, I. Yokohama, Y. Ishida, and T. Kaino, "Cr4+:YAG laser crystal grown by the laser-heated pedestal growth method,"
in Conference on Lasers and Electro-Optics, J. Bowers, D. Miller, D. Scifres, and A. Weiner, eds.,
Vol. 9 of OSA Technical Digest
(Optical Society of America, 1996), paper CWG3.