Sumitomo H, Kadoya Y, Yamanishi M. Wideband deep penetration of photon-number fluctuations into the quantum regime in series-coupled light-emitting diodes.
OPTICS LETTERS 1999;
24:40-42. [PMID:
18071401 DOI:
10.1364/ol.24.000040]
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Abstract
Experimental results on the squeezing of photon-number fluctuations of series-coupled LED's driven by a constant-voltage source are presented that illustrate the advantage of series-coupled LED's, namely, a greater squeezing capability than that of a single LED driven through an equivalent series resistor. We discuss the microscopic origin of the deep squeezing on the basis of quantum-mechanical Langevin equations.
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