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1.02-μm pump laser diodes with high power above 300 mW into single mode fiber

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Abstract

Currently the most promising candidate for a practical 1.3-μm fiber amplifier is the praseodymium-doped fluoride fiber amplifier (PDFFA). However the low quantum efficiency of the 1.3-μm band stimulated transition of the present PDFFA requires high power pump lasers. The first commercial prototype PDFFA module appeared in the market place last year [1]. This module uses a high power Nd:YLF laser pumped with a semiconductor laser diode (LD). Furthermore, a PDFFA module pumped by 1.02-μm strained InGaAs quantum well LDs consisted of four LD modules [2].

© 1995 Optical Society of America

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