Gain-switched semiconductor lasers with pulsed excitation and optical injection for dual-comb spectroscopy
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Other documents of the author: Quevedo-Galán, Clara; Durán, Vicente; Rosado, A.; Pérez-Serrano, A.; Garcia Tijero, Jose Manuel; Esquivias, I.
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Title
Gain-switched semiconductor lasers with pulsed excitation and optical injection for dual-comb spectroscopyAuthor (s)
Date
2020-10-26Publisher
Optical Society of AmericaBibliographic citation
C. Quevedo-Galán, V. Durán, A. Rosado, A. Pérez-Serrano, J. M. G. Tijero, and I. Esquivias, "Gain-switched semiconductor lasers with pulsed excitation and optical injection for dual-comb spectroscopy," Opt. Express 28, 33307-33317 (2020)Type
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Abstract
In this work we demonstrate the capability of two gain-switched optically injected semiconductor lasers to perform high-resolution dual-comb spectroscopy. The use of low duty cycle pulse trains to gain switch the ... [+]
In this work we demonstrate the capability of two gain-switched optically injected semiconductor lasers to perform high-resolution dual-comb spectroscopy. The use of low duty cycle pulse trains to gain switch the lasers, combined with optical injection, allows us to obtain flat-topped optical frequency combs with 350 optical lines (within 10 dB) spaced by 100 MHz. These frequency combs significantly improve the spectral resolution reported so far on dual-comb spectroscopy with gain-switched laser diodes. We evaluate the performance of our system by measuring the transmission profile of an absorption line of H13CN at the C-band, analyzing the attainable signal-to-noise ratio for a range of averaging times. [-]
Investigation project
European Regional Development Fund/Ministerio de Economía y Competitividad–AgenciaEstatal de Investigación (RTI2018-094118-B-C21, RYC-2017-23668); Universitat Jaume I (UJI-B2019-45); Generalitat Valenciana (PROMETEO/2020/029); European Regional DevelopmentFund/Comunidad de Madrid (P2018/NMT-4326); Comunidad de Madrid/Universidad Politécnicade Madrid (APOYO-JOVENES-KXHJ8C-16-VCKM78).Rights
© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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