Abstract

A microsystem excitation light source emitting at 488nm is presented. A direct single-pass nonlinear frequency conversion using a diode laser emission at 976nm and a periodically poled lithium niobate waveguide crystal for efficient second-harmonic generation is demonstrated. This was realized on a micro-optical bench with a combined thermal management and a footprint of (25mm×5mm). At 217mW fundamental power a generated power of 56mW at 488nm with a conversion efficiency of 26% was achieved. With a power stability below 1%, this wavelength stabilized compact device is well suited for Raman spectroscopy.

© 2009 Optical Society of America

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