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Design and Realization of a Miniaturized DFB Diode Laser-Based SHG Light Source With a 2-nm Tunable Emission at 488 nm

M. Braune, M. Maiwald, B. Eppich, O. Brox, A. Ginolas, B. Sumpf, and G. Tränkle

Published in:

IEEE Trans. Compon. Packag. Manuf. Technol., vol. 7, no. 5, pp. 720-725 (2017).


We present a concept and the realization of a diode laser-based second harmonic generation (SHG) light source at 488 nm with the capability of a spectral tuning over 2 nm (83 cm-1) and a stable SHG power at 30 mW. Wavelength tuning is carried out via a common heat sink temperature for the pump laser and the crystal for nonlinear frequency conversion. The compact diode laser module with a footprint of 25×5 mm2 has no movable parts. This enables the implementation as an excitation light source into portable sensor systems such as handheld devices for in situ spectroscopic investigations.

Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, 12489 Berlin, Germany

Index Terms:

Diode lasers, frequency conversion, light sources, nonlinear optics, second harmonic generation (SHG), semiconductor laser.

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