Single-frequency 1559-nm erbium-doped fiber laser pumped by a 650-nm semiconductor laser.
A single-frequency laser with a 2-cm-length erbium-doped fiber and fiber-grating coupler mirrors was operated successfully with a 650-nm semiconductor pump laser. Laser pump threshold was 0.91-mW and 34- ?W output power at 1559 nm was obtained for 6-mW pump power.
Giles
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Mizrahi
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