L
Laurent Diehl
Researcher at Harvard University
Publications - 133
Citations - 5104
Laurent Diehl is an academic researcher from Harvard University. The author has contributed to research in topics: Laser & Quantum cascade laser. The author has an hindex of 39, co-authored 132 publications receiving 4891 citations. Previous affiliations of Laurent Diehl include University of Neuchâtel & Paul Scherrer Institute.
Papers
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Journal ArticleDOI
Intersubband electroluminescence from silicon-based quantum cascade structures.
G. Dehlinger,Laurent Diehl,Ulf Gennser,Hans Sigg,Jérôme Faist,Klaus Ensslin,Detlev Grützmacher,Elisabeth Müller +7 more
TL;DR: The observation of intersubband electroluminescence from a p-type silicon/silicon-germanium quantum cascade structure is reported, and the nonradiative lifetime is found to depend strongly on the design of the quantum well structure, and is shown to reach values comparable to that of an equivalent GaInAs/AlInAs laser structure.
Journal ArticleDOI
Small-divergence semiconductor lasers by plasmonic collimation
Nanfang Yu,Jonathan A. Fan,Qi Jie Wang,Christian Pflügl,Laurent Diehl,Tadataka Edamura,Masamichi Yamanishi,Hirofumi Kan,Federico Capasso +8 more
TL;DR: Yu et al. as mentioned in this paper used surface plasmons to shape the beams of edge-emitting semiconductor lasers and greatly reduce their large intrinsic beam divergence, achieving a reduction in beam spread by a factor of 25 compared with the original 9.9-µm-wavelength laser.
Journal ArticleDOI
Widely tunable mode-hop free external cavity quantum cascade lasers for high resolution spectroscopy and chemical sensing
Gerard Wysocki,Rafal Lewicki,Robert F. Curl,Frank K. Tittel,Laurent Diehl,Federico Capasso,Mariano Troccoli,Gloria E Hofler,David P. Bour,Scott W. Corzine,Richard Maulini,M. Giovannini,Jérôme Faist +12 more
TL;DR: In this article, the authors reported a single mode tuning range of 155 cm-1 (∼ 8% of the center wavelength) with a maximum power of 11.1mW and 182 cm −1 ( ∼ 15% of center wavelength).
Journal ArticleDOI
Multimode regimes in quantum cascade lasers: From coherent instabilities to spatial hole burning
Ariel Gordon,C. Y. Wang,Laurent Diehl,Franz X. Kärtner,Alexey Belyanin,David P. Bour,Scott W. Corzine,Gloria E Hofler,H. C. Liu,Harald Schneider,Thomas Maier,Mariano Troccoli,Jérôme Faist,Federico Capasso +13 more
TL;DR: In this paper, a theoretical and experimental study of multimode operation regimes in quantum cascade laser (QCLs) is presented and a model that can account for coherent phenomena, a saturable absorber, and SHB is developed and studied in detail both analytically and numerically.
Journal ArticleDOI
Widely tunable single-mode quantum cascade laser source for mid-infrared spectroscopy
Benjamin G. Lee,Mikhail A. Belkin,Ross M. Audet,Ross M. Audet,Jim MacArthur,Laurent Diehl,Christian Pflügl,Federico Capasso,Douglas C. Oakley,David Chapman,A. Napoleone,David P. Bour,Scott W. Corzine,Scott W. Corzine,Gloria E Hofler,Gloria E Hofler,Jérôme Faist +16 more
TL;DR: In this paper, a single-mode quantum cascade laser source is presented, which is suitable for a variety of chemical sensing applications and can be used to perform absorption spectroscopy of fluids.