Zobrazeno 1 - 10
of 75
pro vyhledávání: '"K. Rößner"'
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 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
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 30:159-163
We have successfully fabricated and characterized room temperature continuous wave (cw) GaInAsSb/AlGaAsSb distributed feedback lasers emitting in the wavelength region between 2.499 and 2.573 μm. To the best of our knowledge, this is the longest emi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b699354ade1ab652ff4ba54cb0f3ec17
https://doi.org/10.1016/j.physe.2005.08.003
https://doi.org/10.1016/j.physe.2005.08.003
Publikováno v:
IEEE Photonics Technology Letters. 21:36-38
We have fabricated continuous-wave GaInAsSb-AlGaAsSb distributed-feedback (DFB) lasers in the 2.8- mum range, using a DFB concept requiring no subsequent overgrowth steps, by defining first-order Cr-Bragg gratings laterally to a ridge waveguide. We h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54c9e57714908e5922678a64226ebbab
https://doi.org/10.1109/lpt.2008.2005846
https://doi.org/10.1109/lpt.2008.2005846
Publikováno v:
Semiconductor Science and Technology
An overview of the three competing mid-infrared semiconductor laser approaches, being diode, quantum cascade and interband cascade laser designs, is given. Limiting factors as well as unique possibilities of each approach are discussed. Several desig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1c52514fb8941e0a01b6d7661db7073
Publikováno v:
Applied Physics Letters. 93:081117
We report the realization of widely tunable single-mode emitting laser diodes on the (AlGaIn)/(AsSb) material system employing binary superimposed gratings. Through this specialized concept of multifrequency selective gratings, it is possible to gene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39bff2526cad1c32a8ac7fc85dc8319f
https://doi.org/10.1063/1.2977461
https://doi.org/10.1063/1.2977461
Autor:
Alfred Forchel, M. Hümmer, Jan Misiewicz, Marcin Motyka, Robert Kudrawiec, M. Muller, T. Lehnhardt, K. Rößner
Publikováno v:
Journal of Applied Physics. 103:113514
Photoreflectance (PR) and photoluminescence (PL) have been applied to study the band structure and PL thermal quenching for Ga0.24In0.76Sb/GaSb quantum wells (QWs) of the widths varying from 10 to 21 nm. In the case of PR spectra, a strong GaSb-relat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7db4d6dd1d4b407292ed39ec514c058
https://doi.org/10.1063/1.2936852
https://doi.org/10.1063/1.2936852
Autor:
A. Bauer, Sven Höfling, K. Rößner, Alfred Forchel, H. Hofmann, M. Muller, T. Lehnhardt, M. Hümmer, M. Kamp
Publikováno v:
Nanotechnology. 19:235202
We report on single-mode emitting coupled cavity ridge waveguide lasers on the GaSb material system in the 2 µm spectral range using two-dimensional (2D) photonic crystals (PhCs). Eight rows of 2D PhCs lateral to the ridge waveguides act as intermed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84234a05e9d4cd3d20b6633e3c792992
https://doi.org/10.1088/0957-4484/19/23/235202
https://doi.org/10.1088/0957-4484/19/23/235202
Publikováno v:
Applied Physics Letters. 92:183508
We report on room temperature continuous wave single mode GaInAsSb-GaSb quantum well lasers emitting beyond 3μm. Quantum well strain and composition were carefully adjusted to enhance the hole confinement without increasing electron confinement in o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d26d159c9b41e9ef8443bf2200fa958
https://doi.org/10.1063/1.2926657
https://doi.org/10.1063/1.2926657
Autor:
Jan Misiewicz, A. Forchel, T. Lehnhardt, M. Hümmer, Marcin Motyka, K. Rößner, M. Muller, R. Kudrawiec
Publikováno v:
Applied Physics Letters. 92:041910
The optical transitions in Ga0.76In0.24As0.08Sb0.92∕GaSb quantum wells with the width varying from 10to21nm were studied by room temperature contactless electroreflectance (CER). In addition to the quantum well (QW) ground state transition (11H), t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e6804b31076c26d9fb8de2e0fbd08cd
https://doi.org/10.1063/1.2840161
https://doi.org/10.1063/1.2840161