1 kW peak power passively Q -switched ${\mathbf{\text{Nd}}}^{3+}$ -doped glass integrated waveguide laser

Abstract

Embedded optical sensors always require more compact, stable, and powerful laser sources. In this Letter, we present a fully integrated passively Q-switched laser, which has been realized by a ${\mathrm{Ag}}^{+}/{\mathrm{Na}}^{+}$ ion exchange on a ${\mathrm{Nd}}^{3+}$-doped phosphate glass. A BDN-doped cellulose acetate thick film is deposited on the waveguide, acting as an upper cladding and providing a distributed saturable absorption. At $\lambda =1054\mathrm{nm}$, the device emits pulses of $1.3\mathrm{ns}$ FWHM with a repetition rate of $28\mathrm{kHz}$. These performances, coupled with the $1\mathrm{kW}$ peak power, are promising for applications such as supercontinuum generation.

© 2011 Optical Society of America

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