Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Julian Scheuermann"'
Autor:
Nicolas Schäfer, Robert Weih, Julian Scheuermann, Florian Rothmayr, Johannes Koeth, Sven Höfling
Publikováno v:
Sensors, Vol 24, Iss 12, p 3843 (2024)
We demonstrate substrate-emitting resonant cavity interband cascade light emitting diodes (RCICLEDs) based on a single distributed Bragg reflector (DBR). These devices operate in continuous wave mode at room temperature. Compared to standard ICLEDs w
Externí odkaz:
https://doaj.org/article/c031ca6137fb483bbb75aacf33d7079f
Autor:
Josephine Nauschütz, Julian Scheuermann, Robert Weih, Johannes Koeth, Benedikt Schwarz, Sven Höfling
Publikováno v:
Electronics Letters, Vol 59, Iss 19, Pp n/a-n/a (2023)
Abstract Single‐mode distributed feedback GaSb‐based interband cascade lasers with record emission beyond 6.1 µm are presented. The results are based on an epitaxial design with reduced resonant intersubband absorption in the valence band and re
Externí odkaz:
https://doaj.org/article/520fa4a1a2124f9883b1f3739a48b48b
Autor:
Nikolai B. Chichkov, Amit Yadav, Franck Joulain, Solenn Cozic, Semyon V. Smirnov, Leon Shterengas, Julian Scheuermann, Robert Weih, Johannes Koeth, Sven Hofling, Ulf Hinze, Samuel Poulain, Edik U. Rafailov
Publikováno v:
IEEE Photonics Journal, Vol 15, Iss 1, Pp 1-7 (2023)
Building upon recent advances in GaSb-based diode lasers and Er-doped fluoride fibre technologies, this article demonstrates for the first time the fibre-based amplification of mid-infrared diode lasers in the wavelength range around 2.78 $\mu$m. The
Externí odkaz:
https://doaj.org/article/a37e7787f3d54c19a54738c4bb22c96e
Autor:
Josephine Nauschotz, Hedwig Knotig, Robert Weih, Julian Scheuermann, Benedikt Schwarz, Sven Hofling
Publikováno v:
2022 28th International Semiconductor Laser Conference (ISLC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12f25ef85fb1b8c59320bb8f9e033a31
https://doi.org/10.23919/islc52947.2022.9943516
https://doi.org/10.23919/islc52947.2022.9943516
Publikováno v:
Conference on Lasers and Electro-Optics.
Fabry-Pérot interband cascade laser with varied thickness of the separate confinement layers and reduced cladding layer thickness are presented. An epi-side-down mounted device showed a cw-output power of 505mW emitting at λ≈3.3 μm at 10°C.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::482644d4b6335a9a6237111d130d7878
https://doi.org/10.1364/cleo_at.2022.atu4o.5
https://doi.org/10.1364/cleo_at.2022.atu4o.5
Autor:
Johannes Koeth, Julian Scheuermann, S. Becker, Robert Weih, Martin Kamp, C. Kistner, Sven Höfling, K. Rößner
Publikováno v:
Electronics Letters. 56:1206-1208
In this work, monolithic mode-locked GaSb-based lasers at 1.7 µm emission wavelength with heterodyne measurement of the frequency comb are presented. Mode-locking operation was confirmed by measuring the optical beatnote at the round-trip frequency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33c83cbb4fed707151ad2ded3139b8cf
https://doi.org/10.1049/el.2020.1793
https://doi.org/10.1049/el.2020.1793
Autor:
Johannes Koeth, Jakub Kaczmarek, Krzysztof Siembab, Mateusz Straszewski, Robert Weih, Pawel Kluczynski, Marc Fischer, Anne Schade, Julian Scheuermann, Sven Höfling
Publikováno v:
Applied spectroscopy. 75(3)
Funding: European Union Horizon 2020 research and innovation programme under grant agreement No 636930 (iCspec). The detection and measurement of hydrocarbons is of high interest for a variety of applications, for example within the oil & gas industr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9448f3e365b0ec8d40263cda33cff82
https://pubmed.ncbi.nlm.nih.gov/33215517
https://pubmed.ncbi.nlm.nih.gov/33215517
Publikováno v:
Conference on Lasers and Electro-Optics.
We present ICLEDs emitting at peak wavelengths of around 3.7 µm. A record efficiency was achieved by growing the epitaxial structures on low doped substrates and positioning the active stages at antinodes of the optical field.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1067c882ca23d2aa38091028d217803b
https://doi.org/10.1364/cleo_si.2020.sth4l.5
https://doi.org/10.1364/cleo_si.2020.sth4l.5
We present interband cascade light-emitting devices with incoherent and broadband light emission peaked at a wavelength of around 3.7 μm. The substrate-side-emitting devices display higher wall plug efficiencies and maximum output powers than any ea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0c98f59d831a5badef1529c205fb1bb
https://hdl.handle.net/10023/19162
https://hdl.handle.net/10023/19162
Autor:
Johannes Hillbrand, S. Becker, Johannes Koeth, C. Kistner, Julian Scheuermann, Robert Weih, Martin Kamp, Benedikt Schwarz, K. Rößner
Publikováno v:
Applied Physics Letters. 116:022102
We present passive mode locking of a GaSb-based monolithic diode laser emitting at 2.2 μm with a fundamental repetition rate around 9.57 GHz. A pulse width of ∼2.4 ps is reconstructed by shifted wave intermode beat Fourier transform spectroscopy-m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7d156cb2d4f4228d3ece40d13f75990
https://doi.org/10.1063/1.5134520
https://doi.org/10.1063/1.5134520