Title :
IR microcavity light emitters for gas detection
Author :
Hadji, E. ; Picard, E. ; Roux, C. ; Ferret, P. ; Molva, E.
Author_Institution :
CEA, Centre d´Etudes Nucleaires de Grenoble, France
Abstract :
Summary form only given. Optical gas monitoring would require light sources above 3 /spl mu/m because most of the gas species (CO, CO/sub 2/, NO/sub x/, HCl, SO/sub 2/, N/sub 2/O, NH/sub 3/, CH/sub 4/...) have their fundamental absorption lines between 3 and 6 /spl mu/m. We report here on resonant microcavity light sources emitting at room temperature between 2 /spl mu/m and 6 /spl mu/m. The emitter combines a CdHgTe light-emitting active heterostructure layer including a multiple quantum well, grown by molecular beam epitaxy, and two evaporated YF/sub 3/-ZnS multilayered Bragg mirrors.
Keywords :
II-VI semiconductors; cadmium compounds; infrared sources; mercury compounds; mirrors; molecular beam epitaxial growth; monitoring; optical multilayers; semiconductor quantum wells; spectrochemical analysis; spectroscopic light sources; 2 to 6 mum; 3 to 6 mum; CO; CO/sub 2/; CdHgTe; CdHgTe light-emitting active heterostructure layer; HCl; IR light sources; IR microcavity light emitters; N/sub 2/O; NH/sub 3/; NO; SO/sub 2/; YF/sub 3/-ZnS; evaporated YF/sub 3/-ZnS multilayered Bragg mirrors; fundamental absorption lines; gas detection; gas species; molecular beam epitaxy; multiple quantum well; optical gas monitoring; resonant microcavity light sources; room temperature; Absorption; Infrared detectors; Light emitting diodes; Light sources; Microcavities; Molecular beam epitaxial growth; Monitoring; Resonance; Stimulated emission; Temperature;
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.2000.906650
