Zobrazeno 1 - 10
of 1 055
pro vyhledávání: '"Giessen, Harald"'
Autor:
Ruchka, Pavel, Kushwaha, Alok, Marathe, Jessica A., Xiang, Lei, Chen, Rouyan, Kirk, Rodney, Tan, Joanne T. M., Bursill, Christina A., Verjans, Johan, Thiele, Simon, Fitridge, Robert, McLaughlin, Robert A., Psaltis, Peter J., Giessen, Harald, Li, Jiawen
A fundamental challenge in endoscopy is how to fabricate a small fiber-optic probe that can achieve comparable function to probes with large, complicated optics (e.g., high resolution and extended depth of focus). To achieve high resolution over an e
Externí odkaz:
http://arxiv.org/abs/2407.14825
Autor:
Arslan, Serkan, Kappel, Micha, Valero, Adrià Canós, Tran, Thu Huong T., Karst, Julian, Christ, Philipp, Hohenester, Ulrich, Weiss, Thomas, Giessen, Harald, Hentschel, Mario
Traditional nanophotonic sensing schemes utilize evanescent fields in dielectric or metallic nanoparticles, which confine far-field radiation in dispersive and lossy media. Apart from the lack of a well-defined sensing volume that can be accompanied
Externí odkaz:
http://arxiv.org/abs/2407.02331
Autor:
Taleb, Masoud, Bittorf, Paul, Black, Mximilian, Hentschel, Mario, Sigle, Wilfried, Haas, Benedikt, Koch, Christoph, van Aken, Peter A., Giessen, Harald, Talebi, Nahid
Defect centers in hexagonal boron nitride have been extensively studied as room temperature single photon sources. The electronic structure of these defects exhibits strong coupling to phonons, as evidenced by the observation of phonon sidebands in b
Externí odkaz:
http://arxiv.org/abs/2404.09879
Autor:
Hamidi, Masoud, Koshelev, Kirill, Gladyshev, Sergei, Valero, Adrià Canós, Hentschel, Mario, Giessen, Harald, Kivshar, Yuri, Weiss, Thomas
Advancing resonant nanophotonics requires novel building blocks. Recently, cavities in high-index dielectrics have been shown to resonantly confine light inside a lower-index region. These so-called Mie voids represent a counterpart to solid high-ind
Externí odkaz:
http://arxiv.org/abs/2312.04082
Autor:
Belov, Pavel A., Morawetz, Florian, Krüger, Sjard Ole, Scheuler, Niklas, Rommel, Patric, Main, Jörg, Giessen, Harald, Scheel, Stefan
Publikováno v:
Phys. Rev. B 109, 235404 (2024)
Due to quantum confinement, excitons in finite-sized crystals behave rather differently than in bulk materials. We investigate the dependence of energies of Rydberg excitons on the strengths of parabolic as well as rectangular confinement potentials
Externí odkaz:
http://arxiv.org/abs/2310.19746
Autor:
Dreher, Pascal, Janoschka, David, Giessen, Harald, Schützhold, Ralf, Davis, Timothy J., Hoegen, Michael Horn-von, Heringdorf, Frank-J. Meyer zu
Publikováno v:
Nanophotonics, vol. 13, no. 9, 2024, pp. 1593-1602
Quantum path interferences occur whenever multiple equivalent and coherent transitions result in a common final state. Such interferences strongly modify the probability of a particle to be found in that final state, a key concept of quantum coherent
Externí odkaz:
http://arxiv.org/abs/2310.11936
Autor:
Beydeda, Cenk, Nikolaou, Konstantin, Tochtermann, Marius, Ebensperger, Nikolaj G., Untereiner, Gabriele, Farag, Ahmed, Karl, Philipp, Ubl, Monika, Giessen, Harald, Dressel, Martin, Scheffler, Marc
Planar superconducting microwave transmission line resonators can be operated at multiple harmonic resonance frequencies. This allows covering wide spectral regimes with high sensitivity, as it is desired e.g. for cryogenic microwave spectroscopy. A
Externí odkaz:
http://arxiv.org/abs/2303.15914
Autor:
Hessenauer, Jannis, Weber, Ksenia, Benedikter, Julia, Gissibl, Timo, Höfer, Johannes, Giessen, Harald, Hunger, David
We demonstrate laser-written concave hemispherical structures produced on the endfacets of optical fibers that serve as mirror substrates for tunable open-access microcavities. We achieve finesse values of up to 250, and a mostly constant performance
Externí odkaz:
http://arxiv.org/abs/2211.14112
Ultrafast electron-photon spectroscopy in electron microscopes commonly requires ultrafast laser setups. Photoemission from an engineered electron source is used to generate pulsed electrons, interacting with a sample that is excited by the ultrafast
Externí odkaz:
http://arxiv.org/abs/2210.01693
Autor:
Dreher Pascal, Janoschka David, Giessen Harald, Schützhold Ralf, Davis Timothy J., Horn-von Hoegen Michael, Meyer zu Heringdorf Frank-J.
Publikováno v:
Nanophotonics, Vol 13, Iss 9, Pp 1593-1602 (2024)
Quantum path interferences occur whenever multiple equivalent and coherent transitions result in a common final state. Such interferences strongly modify the probability of a particle to be found in that final state, a key concept of quantum coherent
Externí odkaz:
https://doaj.org/article/166aac5ef184469592a857031be1d7f1