Title: Evidence of birefringence and anomalous electromagnetic-pulse propagation in an organic light-emitting diode
Authors: Tai, SC
Chern, JL
Huang, YC
Tseng, MR
Lin, HK
Department of Photonics
Keywords: organic light-emitting diode;superluminal effect;electromagnetic-pulse propagation
Issue Date: 5-Jun-2005
Abstract: dHigh-speed electromagnetic characteristics of an organic light-emitting diode (OLED) are explored in this paper. When a high-frequency (similar to 14 GHz) microwave pulse is injected into an OLED, the pulse is split into two peaks: one peak is delayed by 1.725 ns and another one is advanced by 0.183 ns, which also suggests the existence of an extremely low-speed group velocity. The effective thickness of the OLED sample is similar to 355.8 nm and, as a result, the effective index of refraction is similar to 107 when the splitting phenomenon occurs. (c) 2005 Wiley Periodicals, Inc.
URI: http://dx.doi.org/10.1002/mop.20850
ISSN: 0895-2477
DOI: 10.1002/mop.20850
Volume: 45
Issue: 5
Begin Page: 450
End Page: 452
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