Widely tunable III–V/silicon lasers for spectroscopy in the short-wave infrared
| Autor: | Roel Baets, Ruijun Wang, Augustinas Vizbaras, Aditya Malik, Anton Vasiliev, Bahawal Haq, Ieva Simonyte, Joris Van Campenhout, Gerhard Boehm, Stephan Sprengel, Kristijonas Vizbaras, Markus-Christian Amann, Gunther Roelkens |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Technology and Engineering Absorption spectroscopy Physics::Optics 02 engineering and technology Semiconductor laser theory law.invention 020210 optoelectronics & photonics laser array law Atomic and Molecular Physics 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering SILICON PHOTONICS Semiconductor lasers Distributed feedback laser Tunable diode laser absorption spectroscopy Silicon photonics silicon photonics business.industry mid-infrared Laser Atomic and Molecular Physics and Optics Physics and Astronomy Optical cavity Optoelectronics Photonics and Optics business laser tuning |
| Zdroj: | IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS |
| ISSN: | 1077-260X 1558-4542 |
| Popis: | Integrating III-V gain material with silicon photonic integrated circuits enables the realization of advanced laser sources and full integrated systems for optical communication and sensing applications. The availability of III-V/silicon laser sources operating in the 2-2.5 mu m short-wave infrared wavelength range is very valuable for spectroscopic sensing since many important industrial gases and blood glucose have absorption bands in this wavelength range. In this paper, first we present our latest results on heterogeneously integrated III-V-on-silicon distributed feedback (DFB) laser arrays. A III-V-on-silicon DFB laser array covering the 2.27-2.39 mu m wavelength range with 6 nm wavelength spacing is reported. This DFB laser array is employed as the light source for tunable diode laser absorption spectroscopy of different gases. A four-channel DFB laser array integrated with a beam combiner is used to perform spectroscopic sensing over a 7 nm spectral range without mode hopping at room temperature. Finally, we present our recent advances in widely tunable Vernier lasers based on heterogeneous integration and butt-coupling of the gain section. Continuous tuning near the absorption lines by thermally adjusting the laser cavity length enables high-resolution tunable diode laser absorption spectroscopy measurements together with wide wavelength coverage. |
| Databáze: | OpenAIRE |
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