Title :
Surface plasmon enhanced LED
Author :
Vuckovic, Jelena ; Locar, M. ; Painter, Oskar ; Scherer, Axel
Author_Institution :
California Inst. of Technol., Pasadena, CA, USA
Abstract :
Summary form only given.We designed and fabricated an LED based on a thin semiconductor membrane (/spl lambda//2) with silver mirrors. A large spontaneous emission enhancement and a high modulation speed are obtainable due to the strong localization of the electromagnetic field in the microcavity. The coupling to surface plasmon modes which are subsequently scattered out by means of a grating is used to improve the extraction efficiency of the LED. The bottom mirror is thick and unpatterned. The top mirror is thin and its top surface is patterned with a two dimensional lattice of subwavelength holes. The membrane consists of an InGaAs quantum well emitting at 980 nm with GaAs barriers and p and n type AlGaAs layers positioned next to the silver layers. The silver mirrors may also function as contacts for electrical pumping of the device.
Keywords :
III-V semiconductors; gallium arsenide; indium compounds; laser mirrors; light emitting diodes; photonic band gap; quantum well lasers; spontaneous emission; surface plasmons; 980 nm; Ag; InGaAs; coupling to surface plasmon modes; electrically pumped device; extraction efficiency; high modulation speed; large spontaneous emission enhancement; microcavity; quantum well; silver mirrors; strong electromagnetic field localization; subwavelength holes; surface plasmon enhanced LED; thick bottom mirror; thin semiconductor membrane; thin top mirror; two dimensional lattice; Biomembranes; Electromagnetic fields; Electromagnetic scattering; Light emitting diodes; Microcavities; Mirrors; Particle scattering; Plasmons; Silver; Spontaneous emission;
Conference_Titel :
Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-634-6
DOI :
10.1109/CLEO.2000.906809
