Title :
2-D temperature mapping of vertical-cavity surface-emitting lasers determined by microprobe electroluminescence
Author :
Dabbicco, M. ; Spagnolo, V. ; Scamarcio, G.
Author_Institution :
Dipt. di Fisica, Bari Univ., Italy
fDate :
3/1/2002 12:00:00 AM
Abstract :
Spatially resolved temperature increase of vertical-cavity surface-emitting lasers associated with different current injection conditions is reported. This information is unambiguously extracted by comparing the thermal shift of the spontaneous electroluminescence peaks transmitted through the Bragg mirrors under pulsed and steady state operation. Comparison with the temperature increase estimated by the usual wavelength shift of the laser line under the same operating conditions clearly shows the capability of the proposed technique.
Keywords :
electroluminescence; laser variables measurement; spectral methods of temperature measurement; spontaneous emission; surface emitting lasers; temperature distribution; thermo-optical effects; 2-D temperature mapping; Bragg mirrors; carrier spatial distribution; current injection conditions; microprobe electroluminescence; noninvasive spectroscopic technique; nonuniform temperature rise; proton-implanted top-emitting device; pulsed operation; spontaneous electroluminescence peaks; spontaneous emission band; steady state operation; temperature measurement; thermal shift; vertical-cavity surface-emitting lasers; Electroluminescence; Optical surface waves; Resonance; Semiconductor lasers; Spatial resolution; Surface emitting lasers; Temperature distribution; Temperature measurement; Vertical cavity surface emitting lasers; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
