Schulz, K. Marvin and Hoan Vu, and Schwaiger, Stephan and Rottler, Andreas and Korn, Tobias and Sonnenberg, David and Kipp, Tobias and Mendach, Stefan (2016) Controlling the Spontaneous Emission Rate of Quantum Wells in Rolled-Up Hyperbolic Metamaterials. PHYSICAL REVIEW LETTERS, 117 (8): 085503. ISSN 0031-9007, 1079-7114
Full text not available from this repository. (Request a copy)Abstract
We experimentally demonstrate the enhancement of the spontaneous emission rate of GaAs quantum wells embedded in rolled-up metamaterials. We fabricate microtubes whose walls consist of alternating Ag and (In)(Al) GaAs layers with incorporated active GaAs quantum-well structures. By variation of the layer thickness ratio of the Ag and (In)(Al) GaAs layers we control the effective permittivity tensor of the metamaterial according to an effective medium approach. Thereby, we can design samples with elliptic or hyperbolic dispersion. Time-resolved low temperature photoluminescence spectroscopy supported by finite-difference time-domain simulations reveal a decrease of the quantum well's spontaneous emission lifetime in our metamaterials as a signature of the crossover from elliptic to hyperbolic dispersion.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ENHANCED SPONTANEOUS EMISSION; INTERFACE ROUGHNESS; OPTICAL HYPERLENS; ALLOY-DISORDER; MOLECULES; METAL; SCATTERING; NANOTUBES; SURFACE; INDEX; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group Christian Schüller |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Apr 2019 06:04 |
| Last Modified: | 08 Apr 2019 06:04 |
| URI: | https://pred.uni-regensburg.de/id/eprint/3480 |
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