Abstract

An Nd:YAG planar waveguide laser has been fabricated by ultra-low-fluence ($2\times {10}^{12}{\mathrm{cm}}^{-2}$) swift heavy-ion irradiation ($60\mathrm{MeV}$ ${\mathrm{Ar}}^{4+}$ ions). The appearance of the buried waveguiding has been associated with an increased refractive index layer as a consequence of the ion-induced electronic damage. Continuous-wave laser oscillations at $1064.2\mathrm{nm}$ have been observed from the waveguide under $808\mathrm{nm}$ optical excitation, with the absorbed pump power at threshold and laser slope efficiency close to $26\mathrm{mW}$ and 5.9%, respectively.

© 2010 Optical Society of America

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