Jacques Arnaud, M. B. El Mashade
Electronics Letters vol 23, n°11, 568-570, mai 1987
The Fabry-Perot (FP) method of semiconductor laser gain measurement, first proposed by Hakki and Paoli (1975), is widely used. It is based on the measurement of the FP resonances excited by spontaneous emission. Its validity rests on the assumption that a single mode is significant. We show, using a simplified laser model, that this assumption is valid only when the power of the mirror reflectivity is very small, or near the laser oscillating frequency. For example, the error is in the order of 20% when the power facet reflectivities are equal to 37% and the modal gain is unity. Theses results apply to both index-guided and gain-guided lasers.
LIEN VERS L’ARTICLE : ACCURACY OF FABRY-PEROT METHOD OF SEMICONDUCTOR LASER GAIN MEASUREMENT