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Fabrication and Study of Periodically Structured Y 2 O 3 Waveguides
Author(s) -
Dikovska Anna Og.,
Tonchev Svetlen H.,
Vasilev Cvetelin,
Atanasov Petar A.
Publication year - 2006
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200500102
Subject(s) - waveguide , materials science , planar , laser , substrate (aquarium) , optics , fabrication , optoelectronics , deposition (geology) , diffraction , pulsed laser deposition , coupling (piping) , thin film , laser ablation , nanotechnology , composite material , computer science , medicine , paleontology , oceanography , computer graphics (images) , physics , alternative medicine , pathology , sediment , biology , geology
Summary: Periodically structured waveguides have several advantages over their unstructured‐planar film counterparts such as lower threshold for laser generation, due to the lateral confinement of both the pump and the laser modes, higher coupling efficiency, and easy operation. The structural and optical qualities of the waveguides, on the one hand, and the diffraction efficiency of the periodic structure, on the other, are the key parameters that must be controlled in order to obtain planar waveguides suitable for laser application. In the present work, thin Er, Yb‐doped Y 2 O 3 films were grown on a periodically structured glass substrate by laser ablation. The waveguide structure has a period of 560 nm. The smooth surface, good adhesion, and possibility to repeat the substrate structure make the deposition method suitable for preparation of structured waveguides. The waveguide thickness non‐uniformity introduced by the laser deposition method was estimated to be about 4.6%. It does not affect the waveguide propagation.AFM image of the surface after deposition of the waveguide.