Monolithic Y-branch dual wavelength DBR diode laser at 671nm for shifted excitation Raman difference spectroscopy

M. Maiwald; J. Fricke; A. Ginolas; J. Pohl; B. Sumpf; G. Erbert; G. Tränkle

doi:10.1117/12.2017851

31 May 2013 Monolithic Y-branch dual wavelength DBR diode laser at 671nm for shifted excitation Raman difference spectroscopy

M. Maiwald, J. Fricke, A. Ginolas, J. Pohl, B. Sumpf, G. Erbert, G. Tränkle

Author Affiliations +

Proceedings Volume 8718, Advanced Environmental, Chemical, and Biological Sensing Technologies X; 871808 (2013) https://doi.org/10.1117/12.2017851
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

A dual-wavelength laser diode source suitable for shifted excitation Raman difference spectroscopy (SERDS) is presented. This monolithic device contains two ridge waveguide (RW) sections with wavelengths adjusted distributed Bragg reflection (DBR) gratings as rear side mirrors. An integrated Y-branch coupler guides the emission into a common output aperture. The two wavelengths are centered at 671 nm with a well-defined spectral spacing of about 0.5 nm, i.e. 10 cm^-1. Separate RW sections can be individually addressed by injection current. An output power up to 110 mW was achieved. Raman experiments demonstrate the suitability of these devices for SERDS.

Citation Download Citation

M. Maiwald, J. Fricke, A. Ginolas, J. Pohl, B. Sumpf, G. Erbert, and G. Tränkle "Monolithic Y-branch dual wavelength DBR diode laser at 671nm for shifted excitation Raman difference spectroscopy", Proc. SPIE 8718, Advanced Environmental, Chemical, and Biological Sensing Technologies X, 871808 (31 May 2013); https://doi.org/10.1117/12.2017851

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