Nonlinear photonic diode behavior in energy-graded core-shell quantum well semiconductor rod.
basic_science · Level V
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- Record sourced from PubMed, PMID 24749851.
- Also identified by DOI 10.1021/nl5007905.
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Abstract
Future technologies require faster data transfer and processing with lower loss. A photonic diode could be an attractive alternative to the present Si-based electronic diode for rapid optical signal processing and communication. Here, we report highly asymmetric photonic diode behavior with low scattering loss, from tapered core-shell quantum well semiconductor rods that were fabricated to have a large gradient in their bandgap energy along their growth direction. Local laser illumination of the core-shell quantum well rods yielded a huge contrast in light output intensities from opposite ends of the rod.