Infrared to visible up-conversion using GaP light-emitting diodes
- 1 February 1983
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 42 (3) , 276-278
- https://doi.org/10.1063/1.93914
Abstract
Electroluminescence excited by infrared radiation has been observed in GaP light-emitting diodes (LED’s) at low temperatures providing a new efficient method to convert infrared radiation within a broad spectral range into visible light. Using 10.6-μm radiation of a CO2 laser an up-conversion quantum efficiency of 3.4×10−6 was found. If a low dark current photomultiplier is employed to detect the LED emission the dominant noise source is due to conversion of thermal background radiation yielding a noise equivalent power of NEP=1.6×10−9 W/Hz1/2.Keywords
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