Artículo
Optical waveguides fabricated in Cr:LiSAF by femtosecond laser micromachining
Fecha de publicación:
11/2017
Editorial:
Elsevier Science
Revista:
Optical Materials
ISSN:
0925-3467
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In this work we present the fabrication of double-track type II waveguides written in 1% doped Cr:LiSrAlF6 (Cr:LiSAF) crystal by femtosecond laser micromachining. We studied waveguides fabricated at energies from 1 to 7 μJ per pulse at writing speeds of 15–45 μm/s. We found good wave-guiding performance for both, Transversal Magnetic (TM) and Transversal Electric (TE) polarization modes as well as acceptable losses according to the expected values addressed to technological applications. Also, we performed a high-resolution μ-luminescence waveguide cross-section mapping between the tracks, in order to identify possible spectral changes caused for active ions Cr3+ corresponding to the 4T2 →4A2 vibronic transition in the focal volume zone, due to induced anisotropic graded stress. Finally, their lifetimes were measured for bulk as well as for waveguide trapped ions. We found that for the range of parameters of ultra-short micromachining used, the Cr3+ ions embedded in the waveguides remained spectroscopically unchanged compared with those observed in bulk material.
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Articulos(CIOP)
Articulos de CENTRO DE INVEST.OPTICAS (I)
Articulos de CENTRO DE INVEST.OPTICAS (I)
Citación
Biasetti, Demian Arístide; Di Liscia, Emiliano Javier; Torchia, Gustavo Adrian; Optical waveguides fabricated in Cr:LiSAF by femtosecond laser micromachining; Elsevier Science; Optical Materials; 73; 11-2017; 25-32
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