Abstract

Recently, Ti:sapphire planar waveguides were fabricated¹ by pulsed laser deposition on sapphire substrates. Due to their high crystallinity, optical quality, and low-loss propagation laser oscillation was successfully demonstrated.² Such planar waveguides can also be used as coherent broadband emitters for interferometric applications.³ Fabrication of a channel waveguide by structuring of such a planar waveguide would allow us to obtain fluorescence emission with improved coherence and efficiency in the case of broadband emission and a reduced pump threshold and increased output power in the case of laser oscillation.

© 2002 Optical Society of America