3D laser-written silica glass step-index high-contrast waveguides for the 35  μm mid-infrared range

Martínez, Javier; Ródenas, Airán; Fernandez, Toney; Vázquez de Aldana, Javier R.; Thomson, Robert R.; Aguiló, Magdalena; Kar, Ajoy K.; Solis, Javier; Díaz, Francesc

doi:10.1364/OL.40.005818

Título

3D laser-written silica glass step-index high-contrast waveguides for the 35 μm mid-infrared range

Autor(es)

Martínez, Javier

Ródenas, Airán

Fernandez, Toney

Vázquez de Aldana, Javier R.

Palabras clave

Defect center materials

Fused silica

Laser beams

Silica

Tunable lasers

Waveguides channeled

Fecha de publicación

2015-12

Citación

Javier Martínez, Airán Ródenas, Toney Fernandez, Javier R. Vázquez de Aldana, Robert R. Thomson, Magdalena Aguiló, Ajoy K. Kar, Javier Solis, and Francesc Díaz, "3D laser-written silica glass step-index high-contrast waveguides for the 3.5 μm mid-infrared range," Opt. Lett. 40, 5818-5821 (2015)

Resumen

[EN]We report on the direct laser fabrication of step-index waveguides in fused silica substrates for operation in the 3.5 μm mid-infrared wavelength range. We demonstrate core-cladding index contrasts of 0.7% at 3.39 μm and propagation losses of 1.3 (6.5) dB/cm at 3.39 (3.68) μm, close to the intrinsic losses of the glass. We also report on the existence of three different laser modified SiO2 glass volumes, their different micro-Raman spectra, and their different temperature-dependent populations of color centers, tentatively clarifying the SiO2 lattice changes that are related to the large index changes.

URI

https://hdl.handle.net/10366/147083

ISSN

0146-9592

DOI

10.1364/OL.40.005818

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