Exploring Waveguiding Properties of Heavily Doped $ \hbox{Yb}^{3+}:\hbox{KLu}(\hbox{WO}_{4})_{2}$ Epitaxial Layers
| Autor: | Joan J. Carvajal, Magdalena Aguiló, Francesc Díaz, Xavier Mateos, Western Bolaños |
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| Rok vydání: | 2010 |
| Předmět: |
Ytterbium
Materials science Physics::Optics chemistry.chemical_element Substrate (electronics) Epitaxy Waveguide (optics) law.invention law dielectric films Epitaxial growth Applied optics. Photonics Electrical and Electronic Engineering optical planar waveguides Scattering business.industry Doping QC350-467 Optics. Light Laser Atomic and Molecular Physics and Optics TA1501-1820 chemistry Optoelectronics business Refractive index |
| Zdroj: | IEEE Photonics Journal, Vol 2, Iss 3, Pp 482-489 (2010) |
| ISSN: | 1943-0655 |
| DOI: | 10.1109/jphot.2010.2050580 |
| Popis: | High-quality epitaxial layers of heavily doped $\hbox{Yb:KLu}( \hbox{WO}_{4})_{2}$ grown on $\hbox{KLu}(\hbox{WO}_{4})_{2}$ substrates by liquid phase epitaxy were characterized in terms of lattice mismatch and refractive indexes of the layer and the substrate. The effective refractive indexes of the guided modes that these structures can support were modeled and measured experimentally for the transverse electric (TE) and transverse magnetic (TM) mode excitation by dark m-lines spectroscopy. The upper limit for optical losses in these waveguides corresponding only to scattering processes was estimated to be $\sim$1.5 dB/cm at $\lambda = 632.8\ \hbox{nm}$. These results show that, apart for highly efficient thin-disk laser applications, these epilayers can be used as waveguide devices at wavelengths different from those used to excite $\hbox{Yb}^{3+}$. |
| Databáze: | OpenAIRE |
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