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The botanical exploration of Angola by Germans during the 19th and 20th centuries, with biographical sketches and notes on collections and herbaria

Autor: E. Figueiredo, S. Dressler, G.F. Smith

Publikováno v: Blumea: Biodiversity, Evolution and Biogeography of Plants, 65(2), 126-161

A catalogue of 29 German individuals who were active in the botanical exploration of Angola during the 19th and 20th centuries is presented. One of these is likely of Swiss nationality but with significant links to German settlers in Angola. The cata

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4aa84db4752e2f7f7e8e6f3bb430508b
https://repository.naturalis.nl/pub/800115

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Akademický článek

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The botanical exploration of Angola by Germans during the 19th and 20th centuries, with biographical sketches and notes on collections and herbaria – Errata

Autor: E. Figueiredo, G.F. Smith, S. Dressler

Publikováno v: Blumea - Biodiversity, Evolution and Biogeography of Plants. 65:176-177

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3a76623faec1200e1af91278d48629e6
https://doi.org/10.3767/blumea.2020.65.02.09

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Physics, growth, and performance of (In,Ga)As–AlP/InP quantum-cascade lasers emitting atλ < 4 μm

Autor: S. Dressler, Mathias Ziegler, Mykhaylo P. Semtsiv, Martin Wienold, W. Ted Masselink

Publikováno v: physica status solidi (b). 244:2906-2915

The design strategy and performance for short wavelength (λ ⪅ 4 μm) quantum-cascade lasers (QCLs) is discussed. The QCLs are based on strain-compensated AlAs–In0.73Ga0.27As heterostructures grown using gas-source molecular-beam epitaxy on InP s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::81d31c4ec8fa5eb1093506d04ec72216
https://doi.org/10.1002/pssb.200675614

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HIGH-MAGNETIC-FIELD SPECTROSCOPY OF InGaAs-AlAs/InP QUANTUM-CASCADE LASER

Autor: William Ted Masselink, Mykhaylo P. Semtsiv, Georgy Fedorov, S. Dressler, Dmitry Smirnov

Publikováno v: International Journal of Modern Physics B. 21:1584-1588

The magnetic-field dependence of the mid-infrared quantum-cascade laser emission spectra is used to identify the particular Wannier-Stark states responsible for the laser action in two different laser designs. The active regions in both QCLs are base

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ded46706145842ce1b56811b8045e7a0
https://doi.org/10.1142/s0217979207043245

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HIGH MAGNETIC FIELD STUDY OF 2D ELECTRON GAS IN AlP

Autor: Mykhaylo P. Semtsiv, J. Galibert, S. Dressler, William Ted Masselink, Jean Leotin, V. V. Rylkov, M. Goiran

Publikováno v: International Journal of Modern Physics B. 21:1466-1470

We investigate the properties of quasi-two-dimensional electrons in AlP quantum wells by measuring cyclotron resonance, quantum Hall effect, and Shubnikov de Haas oscillations in modulation-doped AlP - GaP type-II quantum wells. We find that in wide

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a0ccb10e4c8451d7e84858ebd8d88a94
https://doi.org/10.1142/s0217979207043026

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Short-Wavelength $(\lambda\approx 3.6\ \mu{\hbox {m}})$${\hbox {In}}_{0.73}{\hbox {Ga}}_{0.27}{\hbox {As–AlAs–InP}}$ Quantum-Cascade Laser

Autor: Mykhaylo P. Semtsiv, William Ted Masselink, S. Dressler

Publikováno v: IEEE Journal of Quantum Electronics. 43:42-46

We describe the design and implementation of a short-wavelength quantum-cascade laser emitting in the range of 3.6-3.7 mum at 77 K and in the range of 3.8-3.9 mum at 300 K. The shortest wavelength laser emission observed at 77 K is lambda=3.62 mum. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71b7132d30871484165e01a22c458739
https://doi.org/10.1109/jqe.2006.884577

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