Title :
Resonant-cavity light-emitting diodes (RC-LEDs) and detectors for mid-IR gas-sensing applications
Author :
Gevaux, D. ; Green, A. ; Palmer, C. ; Stavrinou, P. ; Roberts, C. ; Phillips, C.
Author_Institution :
Exp. Solid State Group, Imperial Coll. London, UK
Abstract :
The potential for harnessing resonant-cavity (RC) effects in photonically structured mid-IR opto-electronic devices is explored experimentally and theoretically. Numerical modelling suggests that the effects of angular and spectral narrowing, combined with enhancements in external coupling efficiency, can lead to overall effective improvements in detectors and LEDs aimed at CH3 and CO2 gas sensing applications of up to ×22. Experimental progress towards realising these figures is presented.
Keywords :
cavity resonators; gas sensors; infrared detectors; integrated optoelectronics; light emitting diodes; optical resonators; spectral line narrowing; CH3 gas sensing; CO2 gas sensing; angular narrowing; external coupling efficiency; gas-sensing applications; light-emitting diodes; midIR devices; midIR sensing applications; optoelectronic devices; photonically structured devices; resonant cavity LED; resonant cavity effects; resonant-cavity detectors; spectral narrowing;
Journal_Title :
Optoelectronics, IEE Proceedings -
DOI :
10.1049/ip-opt:20030486
