Integrated optical distributed feedback laser with Ti:Fe:Er:LiNbO3 waveguide

A distributed feedback (DFB) laser in LiNbO3 is demonstrated using a Ti:Fe:Er:LiNbO3 waveguide with a holographically written photorefractive grating. The DFB laser was combined with a waveguide amplifier on the same substrate. Up to 1.12 mW of output power at λ=1531.35 nm was emitted by the laser/a...

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Bibliographic Details
Published in:Applied physics letters 2003-03, Vol.82 (10), p.1515-1517
Main Authors: Das, B. K., Ricken, R., Sohler, W.
Format: Article
Language:English
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Summary:A distributed feedback (DFB) laser in LiNbO3 is demonstrated using a Ti:Fe:Er:LiNbO3 waveguide with a holographically written photorefractive grating. The DFB laser was combined with a waveguide amplifier on the same substrate. Up to 1.12 mW of output power at λ=1531.35 nm was emitted by the laser/amplifier combination at a pump power level of 240 mW (λP=1480 nm). The emission spectrum consists of the two lowest-order DFB modes of about 3.9 GHz frequency spacing. Whereas the measured threshold gain of ∼3.3 dB/cm approximately agreed with the modeling results, the observed mode spacing was clearly smaller than calculated.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1559443