High-power red laser oscillation of 311.4mW in Pr3+-doped waterproof fluoro-aluminate glass fibre excited by GaN laser diode

Jun Nakanishi, T. Yamada, Y. Fujimoto, O. Ishii, M. Yamazaki

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A high-power red fibre laser with a Pr-doped waterproof fluoro-aluminate glass fibre (Pr:WPFGF) is reported. Even though a Pr:WPFGF is a fluoride material, it possesses low deliquescence and enough long-term stability. A blue/violet GaN laser diode at 442nm was launched into the Pr:WPFGF (core diameter 8m, length 40mm), both end surfaces of which were directly coated to construct a resonator. The maximum output power was measured to be 311.4mW at 800mW pumping power. The oscillation wavelength was 638nm and the slope efficiency was calculated to be 41.6. These results showed good agreement with theoretical predictions.

Original languageEnglish
Pages (from-to)1285-1286
Number of pages2
JournalElectronics Letters
Volume46
Issue number18
DOIs
Publication statusPublished - 2010 Sep 2
Externally publishedYes

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Glass fibers
Semiconductor lasers
Lasers
Fiber lasers
Resonators
Wavelength

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

High-power red laser oscillation of 311.4mW in Pr3+-doped waterproof fluoro-aluminate glass fibre excited by GaN laser diode. / Nakanishi, Jun; Yamada, T.; Fujimoto, Y.; Ishii, O.; Yamazaki, M.

In: Electronics Letters, Vol. 46, No. 18, 02.09.2010, p. 1285-1286.

Research output: Contribution to journalArticle

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