Zobrazeno 1 - 10
of 154
pro vyhledávání: '"Andreas, Klehr"'
Autor:
Thi Nghiem Vu, Tran Quoc Tien, Bernd Sumpf, Andreas Klehr, Jörg Fricke, Hans Wenzel, Günther Tränkle
Publikováno v:
Applied Sciences, Vol 11, Iss 18, p 8608 (2021)
An all-diode laser-based master oscillator power amplifier (MOPA) configuration for the generation of ns-pulses with high peak power, stable wavelength and small spectral line width is presented. The MOPA emits alternating at two wavelengths in the s
Externí odkaz:
https://doaj.org/article/2fcfef60d3cb46bfa2383f5644061986
Autor:
Hans Wenzel, Andreas Klehr, Andrea Knigge, Anissa Zeghuzi, Jan-Philipp Koester, Heike Christopher
Publikováno v:
IEEE Photonics Technology Letters. 33:151-154
Carrier-induced anti-guiding effects emerging at extremely high injection current densities under short-pulse operation necessitate lateral-waveguide design considerations, that differ from those required when continuous-wave operation is desired. He
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0178166a38ec8126f5a425157d732943
https://doi.org/10.1109/lpt.2020.3047150
https://doi.org/10.1109/lpt.2020.3047150
Autor:
E. Bahat Treidel, Andreas Klehr, Oliver Hilt, Arnim Ginolas, Heike Christopher, Armin Liero, Joachim Würfl
Publikováno v:
Electronics Letters. 56:1084-1086
In this work, the authors developed vertical gallium nitride metal-insulator-semiconductor field-effect transistors (GaN MISFETs) for direct chip-on-chip assembly with gallium arsenide-based broad area distributed Bragg reflector diode laser. The int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6ddaa9612c22d7d699686639a09f6bb
https://doi.org/10.1049/el.2020.0896
https://doi.org/10.1049/el.2020.0896
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 25:1-10
A root-cause analysis of thermal power saturation in broad area diode lasers is presented. Thermal power saturation limits in largest parts the optical power in continuous wave (CW) driven diode lasers, as junction temperature increases with bias. Ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4b0b861cd4170600b60926b98e7df33
https://doi.org/10.1109/jstqe.2019.2922109
https://doi.org/10.1109/jstqe.2019.2922109
Autor:
Andreas Klehr, Hans Wenzel, Andrea Knigge, Anissa Zeghuzi, Heike Christopher, Jan-Philipp Koester
Publikováno v:
2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Diode lasers generating nanosecond-long optical pulses with high output powers and a good beam quality are used for various applications, such as light detection and ranging (LiDAR) systems needed for autonomous driving or robotics [1] . To achieve a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f1a525ca79746ab4f2171c7858a1a5f
https://doi.org/10.1109/cleo/europe-eqec52157.2021.9542618
https://doi.org/10.1109/cleo/europe-eqec52157.2021.9542618
Autor:
Dmitry Kazakov, Lina Jaurigue, Andreas Klehr, Christoph Weber, Stefan Breuer, Federico Capasso, Marcus Ossiander, Andrea Knigge, Kathy Lüdge, Stefan Meinecke, Dominik Auth
Publikováno v:
Novel In-Plane Semiconductor Lasers XX.
Optical self-injection stabilization of a passively mode-locked InGaAs double quantum well semiconductor laser is reported. Time-domain, frequency-domain and spectral domain measurement results in dependence on feedback strength and feedback delay de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eef0e5d0830a7d2f1b7e0fa69977a000
https://doi.org/10.1117/12.2579149
https://doi.org/10.1117/12.2579149
Autor:
Christoph Weber, Andreas Klehr, Dominik Auth, Jan Lautenschläger, Dmitry Kazakov, Federico Capasso, Benedikt Schwarz, Marco Piccardo, Stefan Breuer, Andrea Knigge, Johannes Hillbrand
Publikováno v:
Conference on Lasers and Electro-Optics.
Temporally- and spectrally-resolved phase and intensity emission characteri-zation of amplitude-modulated optical frequency comb generation and phase noise transfer of an initially single mode laser by optical comb injection locking is presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7857c4f177f6b28b2259f434255e6d7
https://doi.org/10.1364/cleo_si.2021.sf2f.2
https://doi.org/10.1364/cleo_si.2021.sf2f.2
Autor:
E. Bahat Treidel, Oliver Hilt, Heike Christopher, Andreas Klehr, Joachim Würfl, Armin Liero, Arnim Ginolas
Publikováno v:
DRC
Vertical GaN based MISFETs for high voltage power switching applications have the potential to outperform Si and SiC based competitors in terms of power density and switching speed [1] – [3] . In this work the development of vertical GaN MISFET tec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccbc0d83bd1647d4616d05145485672d
https://doi.org/10.1109/drc50226.2020.9135182
https://doi.org/10.1109/drc50226.2020.9135182
Autor:
Armin Liero, Tobias Honig, Eckhard Langenbach, Andreas Klehr, Günther Tränkle, Jörg Fricke, Andrea Knigge, Hans Wenzel, Heike Christopher
Publikováno v:
High-Power Diode Laser Technology XVIII.
Diode lasers providing nanosecond optical pulses with high peak optical powers are key components in systems for freespace communication, metrology, material processing, spectroscopy, and light detection and ranging (LIDAR) as employed for, e.g., aut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92e56278c2bf49be9fca64fe386ce00b
https://doi.org/10.1117/12.2544274
https://doi.org/10.1117/12.2544274
Autor:
Evgeny L. Gurevich, Gordon Zyla, Andreas Klehr, Nils Surkamp, Martin R. Hofmann, Andrea Knigge, Cemal Esen, Andreas Ostendorf
Publikováno v:
3D Printed Optics and Additive Photonic Manufacturing II.
In this study, we use a hybrid mode-locked external cavity diode laser with subsequent amplification and pulse compression. The system provides laser pulses of 440 fs width (assuming a sech² pulse shape) and 160 mW average output power at a repetiti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e62b043551841adfc3889f623dfb8734
https://doi.org/10.1117/12.2555890
https://doi.org/10.1117/12.2555890