A composite microchip laser composed of neodymium doped yttrium aluminum garnet (Nd:YAG) and neodymium doped lanthanum-modified lead zirconate titanate (Nd:PLZT) is proposed. The high electro-optic effect of PLZT, combined with the high gain effect of Nd3+, makes Nd:PLZT not only a tuning medium for wavelengths, but also a gain medium for optical amplification.
The emitted spectra can be tuned by the voltages on the Nd:PLZT, and the output power is enhanced. In addition, the laser is compact, small and highly efficient.