Abstract
Semiconductor surface-emitting lasers operated in an external cavity (i.e. EXSEL lasers) benefit not only from the advantages of semiconductors but also from the applicability of a large variety of traditional laser techniques. This implies, and our experimental results show, that EXSEL lasers may become competitive for uses traditionally addressed by dye or solid-state lasers, i.e., those requiring ultrashort high/power pulses. For such applications, semiconductors bring the benefits of large band widths, tunable operation at wavelengths ranging from 450 nm to 28. μm, efficient optical or electrical pumping, and the eventual size and cost reductions inherent in semiconductor devices.
© 1992 Optical Society of America
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