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- Title
Studies on erbium diffusion in lithium niobate.
- Authors
R. Chakraborty; J. C. Biswas; S. K. Lahiri
- Abstract
Experimental work on the study of erbium (Er) diffusion and the characterisation of Er-diffused layers required to form waveguide amplifiers in LiNbO3 substrate is presented. The presence of active Er in the lattice of LiNbO3 is investigated using x-ray photoelectron spectroscopy (XPS), photoluminescence (PL) measurement, and spectroscopic reflectometry. The shift of XPS peaks confirms the oxidized state of Er. The PL spectrum shows a sharp peak at 1530-nm wavelength, indicating the 4I15/2→4I13/2 lasing transition of Er3+. The reflectance spectrum indicates absorption at ∼980 and ∼1500 nm.
- Subjects
PACKED towers (Chemical engineering); CHEMICAL engineering equipment; DIFFUSION; ABSORPTION
- Publication
Optical Engineering, 2008, Vol 47, Issue 8, p84601
- ISSN
0091-3286
- Publication type
Article
- DOI
10.1117/1.2969125