We successfully fabricated whispering gallery mode cavities made of crystalline material using the laser-heated pedestal growth method. The crystalline feature was maintained and the Q-factor of our fabricated hexagonal sapphire resonator was about 8.5x10^3.
© 2012 OSA
H. Kudo, Y. Ogawa, T. Tanabe, and A. Yokoo, "Crystalline whispering gallery mode cavities directly fabricated by crystal growth," in Frontiers in Optics 2012/Laser Science XXVIII, OSA Technical Digest (online) (Optical Society of America, 2012), paper FTh1G.4.
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