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
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