Distributed feedback interband cascade lasers for spectroscopy from 3-6 μm

L. Nähle; C. Zimmermann; M. von Edlinger; J. Scheuermann; M. Fischer; L. Hildebrandt; J. Koeth; R. Weih; S. Höfling; M. Kamp

doi:10.1117/12.2050478

21 May 2014 Distributed feedback interband cascade lasers for spectroscopy from 3-6 μm

L. Nähle, C. Zimmermann, M. von Edlinger, J. Scheuermann, M. Fischer, L. Hildebrandt, J. Koeth, R. Weih, S. Höfling, M. Kamp

Author Affiliations +

Proceedings Volume 9101, Next-Generation Spectroscopic Technologies VII; 91010G (2014) https://doi.org/10.1117/12.2050478
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

Abstract

In recent years the importance of lasers in optical gas sensing has been continuously increasing. Tunable Laser Absorption Spectroscopy (TLAS) has proven to be a versatile tool in modern environmental analysis. In the mid-infrared wavelength region between 3 and 6 µm, which is of high interest for sensing applications, Interband Cascade Lasers (ICL) can provide monomode continuous wave (CW) emission at room temperature. We present the simulation, design and manufacturing of distributed feedback (DFB) laser devices based on this concept, with focus on devices that target specific, technologically and industrially relevant, wavelengths with low energy consumption. Finally application-grade devices from 3 to 6 µm are presented. CW operation above room temperature and tuning ranges of 11 nm with Side Mode Suppression Ratios (SMSR) greater 30 dB were achieved.

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L. Nähle, C. Zimmermann, M. von Edlinger, J. Scheuermann, M. Fischer, L. Hildebrandt, J. Koeth, R. Weih, S. Höfling, and M. Kamp "Distributed feedback interband cascade lasers for spectroscopy from 3-6 μm", Proc. SPIE 9101, Next-Generation Spectroscopic Technologies VII, 91010G (21 May 2014); https://doi.org/10.1117/12.2050478

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