Excess frequency noise in interband cascade lasers: towards narrower-linewidth operation

Giacomo Insero; Francesco Cappelli; M. Siciliani de Cumis; Jacopo Pelini; Tecla Gabbrielli; Georg Marschick; Robert Weih; Johannes Koeth; Sven Höfling; Gottfried Strasser; Paolo De Natale; Borislav Hinkov; Simone Borri

doi:10.1117/12.3002675

13 March 2024 Excess frequency noise in interband cascade lasers: towards narrower-linewidth operation

Giacomo Insero, Francesco Cappelli, M. Siciliani de Cumis, Jacopo Pelini, Tecla Gabbrielli, Georg Marschick, Robert Weih, Johannes Koeth, Sven Höfling, Gottfried Strasser, Paolo De Natale, Borislav Hinkov, Simone Borri

Author Affiliations +

Proceedings Volume 12905, Novel In-Plane Semiconductor Lasers XXIII; 129050O (2024) https://doi.org/10.1117/12.3002675
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Interband Cascade Lasers are becoming more and more attractive sources for sensing applications due to their direct mid-IR emission and low power consumption. In many demanding applications of precision spectroscopy and imaging, the laser frequency and intensity noise represent the ultimate limiting factor for the final sensitivity. Here, we first characterize the response of a DFB ICL to a frequency modulation and measure its tuning coefficients. A frequency noise analysis of the ICL is then provided, through experimental investigation of the frequency noise power spectral density, with a particular attention to the technical noise contribution. A possible scheme for frequency stabilization and linewidth narrowing is presented through frequency locking to a high-Q factor microresonator.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Giacomo Insero, Francesco Cappelli, M. Siciliani de Cumis, Jacopo Pelini, Tecla Gabbrielli, Georg Marschick, Robert Weih, Johannes Koeth, Sven Höfling, Gottfried Strasser, Paolo De Natale, Borislav Hinkov, and Simone Borri "Excess frequency noise in interband cascade lasers: towards narrower-linewidth operation ", Proc. SPIE 12905, Novel In-Plane Semiconductor Lasers XXIII, 129050O (13 March 2024); https://doi.org/10.1117/12.3002675

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