Femtosecond laser micromachined optical waveguides in LiTaO3crystal
By using femtosecond laser micromachining, optical wave guides in both depressed cladding and dual-line configurations have been produced in LiTaO3 crystal. The guiding properties and the thermal stability have been investigated for both geometries, which exhibit different performance. Depressed cla...
| Autores: | , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2013 |
| País: | España |
| Recursos: | Universidad de Salamanca (USAL) |
| Repositório: | GREDOS. Repositorio Institucional de la Universidad de Salamanca |
| OAI Identifier: | oai:gredos.usal.es:10366/146872 |
| Acesso em linha: | http://hdl.handle.net/10366/146872 |
| Access Level: | Acceso aberto |
| Palavra-chave: | optical waveguides LiTaO3 crystals laser micromachining |
| Resumo: | By using femtosecond laser micromachining, optical wave guides in both depressed cladding and dual-line configurations have been produced in LiTaO3 crystal. The guiding properties and the thermal stability have been investigated for both geometries, which exhibit different performance. Depressed cladding waveguides support guidance along both extraordinary and ordinary index polarizations, while dual-line waveguides support only extraordinary index polarization. Thermal annealing has been proved to be an effective method to reduce the propagation losses. For the cladding waveguide, the lowest propagation loss was as low as 0.38 dB/cm after the annealing treatment at 400 °C |
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