Zobrazeno 1 - 10
of 183
pro vyhledávání: '"Nils C. Gerhardt"'
Autor:
Markus Lindemann, Natalie Jung, Nicolas Manrique‐Nieto, Tobias Pusch, Rainer Michalzik, Nils C. Gerhardt, Martin R. Hofmann
Publikováno v:
Electronics Letters, Vol 59, Iss 13, Pp n/a-n/a (2023)
Abstract Polarization dynamics in spin‐polarized vertical‐cavity surface‐emitting lasers (spin‐VCSELs) with high birefringence have recently been demonstrated to offer very high potential for optical data‐transmission systems that outperfor
Externí odkaz:
https://doaj.org/article/e2654b6c23ce4078af96dbbf0b30efac
Publikováno v:
Nanomaterials, Vol 12, Iss 3, p 505 (2022)
In this paper, the investigation of laser-induced periodic surface structures (LIPSSs) on a polycrystalline diamond substrate using synthetic optical holography (SOH) is demonstrated. While many techniques for LIPSS detection operate with sample cont
Externí odkaz:
https://doaj.org/article/0825968eb1eb429aad931e25aa93beef
Publikováno v:
Applied Sciences, Vol 9, Iss 15, p 3086 (2019)
The influence of the axial pinhole position in a confocal microscope in terms of the contrast of the image is analyzed. The pinhole displacement method is introduced which allows to increase the contrast for topographic imaging. To demonstrate this a
Externí odkaz:
https://doaj.org/article/ebb16291ffb84dda993d25daccbee83a
Autor:
Jens Möller, Eveline Popanda, Iris Tischoff, Nuri H. Aydin, Hubert Welp, Carsten Brenner, Nils C. Gerhardt, Kirsten Schmieder, Dorothea Miller, Martin R. Hofmann
Publikováno v:
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVI.
Autor:
Niels Heermeier, Tobias Heuser, Jan Große, Natalie Jung, Arsenty Kaganskiy, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann, Stephan Reitzenstein
Spin-controlled lasers are highly interesting photonic devices and have been shown to provide ultra-fast polarization dynamics in excess of 200 GHz. In contrast to conventional semiconductor lasers their temporal properties are not limited by the int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92d8153d7c1a3c09a1883d63a8f293ae
Publikováno v:
Optics and Lasers in Engineering. 121:441-447
This paper discusses a digital holographic microscopy approach for comprehensive and non-destructive inspection of spatially confined structures, which are characterized by the high aspect ratio of their lateral dimensions ( ∼ 1:30) and are fabrica
Autor:
Rainer Michalzik, Nils C. Gerhardt, Markus Lindemann, Natalie Jung, Tobias Pusch, Martin R. Hofmann
Publikováno v:
Spintronics XIV.
Spin-polarized vertical-cavity surface-emitting lasers (spin-VCSELs) have proven to be a highly promising device technology for high-speed optical communication systems. In spin-lasers, the polarization state of the laser emission can be controlled b
Autor:
Natalie Jung, Stephan Reitzenstein, Niels Heermeier, Nils C. Gerhardt, Martin R. Hofmann, Markus Lindemann, Jan Große, Tobias Heuser
Publikováno v:
Spintronics XIV.
Spin-controlled lasers are highly interesting photonic devices and have been shown to provide ultra-fast polarization dynamics in excess of 200 GHz. Another class of modern semiconductor lasers are high-beta emitters which benefit from enhanced light
Autor:
Nils C. Gerhardt, Sebastian M. J. Beer, Teresa de los Arcos, Ignacio Giner, Jana Weßing, Guido Grundmeier, Marcel Schmidt, Stefan Cwik, Detlef Rogalla, Andreas D. Wieck, Anjana Devi, Martin R. Hofmann
Publikováno v:
Dalton Transactions. 48:2926-2938
Neodymium sulphide (Nd2S3) belongs to the exciting class of rare earth sulphides (RES) and is projected to have a serious potential in a wide spectrum of application either in pure form or as dopant. We demonstrate a facile and first growth of Nd2S3
Publikováno v:
Applied optics. 60(4)
We present spatially resolved measurements of the below-band-gap carrier-induced absorption and concurrent phase change in a semiconductor with the help of transmission digital holography. The application is demonstrated for a bulk GaAs sample, while