Abstract
In this work we investigate the high frequency modulation characteristics of mid-infrared surface-emitting ring quantum cascade lasers (QCLs) in comparison to Fabry-Pérot (FP) cavity devices from identical laser material. Both device types are single-mode emitting based on either 2nd-order (ring-QCL) or 1st order (FP-QCL) distributed feedback (DFB) gratings with an emission wavelength around 7.56 mm . Their modulation characteristics are investigated in the frequency-domain using an optical frequency-to-amplitude conversion technique based on the ro-vibrational absorptions of CH4 [1].
© 2019 IEEE
PDF ArticleMore Like This
Bo Meng, Mattias Beck, and Jérôme Faist
pd_1_6 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2019
Bo Meng, Matthew Singleton, Mehran Shahmohammadi, Filippos Kapsalidis, Ruijun Wang, Mattias Beck, and Jérôme Faist
STh4E.2 CLEO: Science and Innovations (CLEO:S&I) 2020
O. Spitz, A. Herdt, G. Maisons, M. Carras, W. Elsäßer, and F. Grillot
LW4B.2 Applications of Lasers for Sensing and Free Space Communications (LS&C) 2019