727 citations
- Argonne National LaboratoryUS162 papers
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11 papers · 1 filter
Unexpectedly Slow Two Particle Decay of Ultra-Dense Excitons in Cuprous Oxide
Laszlo Frazer, Richard D. Schaller, J. B. Ketterson
For an ultra-dense exciton gas in cuprous oxide (CuO), exciton-exciton interactions are the dominant cause of exciton decay. This study demonstrates that the accepted Auger rec…
Third Harmonic Generation in Cuprous Oxide: Efficiency Determination
Laszlo Frazer, Richard D. Schaller, Kelvin Chang +2
The efficiency of third harmonic generation in cuprous oxide was measured. Intensities followed a non-cubic power law which indicates nonperturbative behavior. Polarization anisotr…
Low-threshold stimulated emission using colloidal quantum wells
Chunxing She, Igor Fedin, Dmitriy S. Dolzhnikov +4
Semiconductor nanocrystals can be synthesized using inexpensive, scalable, solution-based techniques, and their utility as tunable light emitters has been demonstrated in various a…
Experimental demonstration of near-infrared epsilon-near-zero multilayer metamaterial slabs
Xiaodong Yang, Changyu Hu, Huixu Deng +3
Near-infrared epsilon-near-zero (ENZ) metamaterial slabs based on silver-germanium (Ag-Ge) multilayers are experimentally demonstrated. Transmission, reflection and absorption spec…
Structural and Electronic Recovery Pathways of a Photoexcited Ultrathin VO2 Film
Haidan Wen, Lu Guo, Eftihia Barnes +10
The structural and electronic recovery pathways of a photoexcited ultrathin VO2 film at nanosecond time scales have been studied using time-resolved x-ray diffraction and transient…
TCO Nanostructures as building blocks for nanophotonic devices in the infrared
Shi Qiang Li, Leonidas E. Ocola, Robert P. H. Chang
Transparent conducting oxides (TCOs), in general, are degenerated semiconductors with large electronic band-gap. They have been widely used for display screens, optoelectronic, pho…