Second-harmonic-generation microsystem light source at 488 nm for Raman spectroscopy

Published in:
Opt. Lett., vol. 34, no. 2, pp. 217-219 (2009).
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Abstract:
A microsystem excitation light source emitting at 488 nm is presented. A direct single-pass nonlinear frequency conversion using a diode laser emission at 976 nm 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 (25 mmx5 mm). At 217 mW fundamental power a generated power of 56 mW at 488 nm 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.

OCIS codes:
140.2020, 190.2620, 130.7405, 170.5660.

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