Zobrazeno 1 - 10
of 531
pro vyhledávání: '"H. Kalt"'
Publikováno v:
APL Photonics, Vol 2, Iss 9, Pp 096103-096103-10 (2017)
Optical micro-cavities of various types have emerged as promising photonic structures, for both the investigation of fundamental science in cavity quantum electrodynamics and simultaneously for various applications, e.g., lasers, filters, or modulato
Externí odkaz:
https://doaj.org/article/6b406b24b83043c0bcad99754ae14d42
Autor:
Q. Chen, B. Frauenfelder, H. Kalt, Rafael Abela, M. Lange, Bruce D. Patterson, Markus Janousch, Ming Shi, H. Auderset
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. :752-757
The conceptual designs for the insertion device front ends [1] have been completed for the 2.4 GeV swiss light source (SLS), currently under construction at the Paul Scherrer Institute. The critical component of the front ends, the photon shutter, ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adee4dd2069e7eecd9ade4f2cc1c47d9
https://doi.org/10.1016/s0168-9002(01)00487-9
https://doi.org/10.1016/s0168-9002(01)00487-9
Autor:
D. Steinbach, G. Kocherscheidt, M. U. Wehner, H. Kalt, M. Wegener, K. Ohkawa, D. Hommel, V. M. Axt
Publikováno v:
Physical Review-Series B-, 60 (17), 12079-12090
Summary form only given. While ultrafast semiconductor spectroscopy has investigated scattering times, i.e. the time between different scattering events, for many years, quantum kinetics asks for the duration of one scattering process, i.e. for the m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b279fd7ae9a6066ce3c32ce85345ce1
https://doi.org/10.1103/physrevb.60.12079
https://doi.org/10.1103/physrevb.60.12079
Publikováno v:
Acta Physica Polonica A. 94:139-146
We review studies on the coherent and incoherent exciton dynamics in ZnSe-based quantum wells. First, the exciton—exciton scattering parameter is determined from femtosecond four-wave mixing as a function of background exciton density generated by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01d5fbee0532e26448e950bdf2d65799
https://doi.org/10.12693/aphyspola.94.139
https://doi.org/10.12693/aphyspola.94.139
Akademický článek
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Autor:
H Kalt
Publikováno v:
Journal of Crystal Growth. :627-631
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e2b6541ccdd546c327cdf4151929977
https://doi.org/10.1016/s0022-0248(97)00529-0
https://doi.org/10.1016/s0022-0248(97)00529-0
Publikováno v:
Journal of Crystal Growth. 138:191-194
The internal piezofields in strained layer CdS/CdSe superlattices lead to a strong deformation of the bandstructure due to a large lattice mismatch. A screening of these piezo-fields by increasing carrier densities leads to a blue shift of the emissi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66f9214b519631d3fcf1201279a21318
https://doi.org/10.1016/0022-0248(94)90804-4
https://doi.org/10.1016/0022-0248(94)90804-4
Publikováno v:
Advanced Materials for Optics and Electronics. 3:51-55
Optically pumped stimulated emission in ZnSe/ZnSxSe1 − x heterostructures grown by MOVPE has been observed up to 170 K. Gain measurements have been performed using the variable stripe length method. The underlying gain mechanism at 25 K is atribute
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d19d910e108037ec68d5e32d4240549f
https://doi.org/10.1002/amo.860030108
https://doi.org/10.1002/amo.860030108
Publikováno v:
Advanced Materials for Optics and Electronics. 3:89-93
We present results of time-resolved luminescence measurements of CdSe quantum dots embedded in glass with radii around 20 A using intense picosecond excitation resonant into the first excited hole state of a photodarkened sample. Distinct luminescenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d06cc2e9a46854e78fcee65fac7f5496
https://doi.org/10.1002/amo.860030113
https://doi.org/10.1002/amo.860030113
Publikováno v:
AIP Conference Proceedings.
In this work we present experimental results on the behavior of random lasing modes found in nanocrystalline ZnO. The degree of mode localization which has already been discussed in theoretical works is probed by spatially resolved luminescence spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ed237ebafd55c068d04588eb94c4d3b
https://doi.org/10.1063/1.3666447
https://doi.org/10.1063/1.3666447