3D laser-written silica glass step-index high-contrast waveguides for the 3.5 mu m mid-infrared range

Javier Martinez; Airan Rodenas; Toney Fernandez; Javier R. Vazquez de Aldana; Robert R Thomson; Magdalena Aguilo; Ajoy Kumar Kar; Javier Solis; Francesc Diaz

doi:10.1364/OL.40.005818

3D laser-written silica glass step-index high-contrast waveguides for the 3.5 mu m mid-infrared range

Javier Martinez, Airan Rodenas^*, Toney Fernandez, Javier R. Vazquez de Aldana, Robert R Thomson, Magdalena Aguilo, Ajoy Kumar Kar, Javier Solis, Francesc Diaz

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

We report on the direct laser fabrication of step-index waveguides in fused silica substrates for operation in the 3.5 mu m mid-infrared wavelength range. We demonstrate core-cladding index contrasts of 0.7% at 3.39 mu m and propagation losses of 1.3 (6.5) dB/cm at 3.39 (3.68) mu m, 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.

Original language	English
Pages (from-to)	5818-5821
Number of pages	4
Journal	Optics Letters
Volume	40
Issue number	24
DOIs	https://doi.org/10.1364/OL.40.005818
Publication status	Published - 15 Dec 2015

Keywords

QUANTUM CASCADE LASERS
BULK FUSED-SILICA
FEMTOSECOND-LASER
CRYSTALS

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title = "3D laser-written silica glass step-index high-contrast waveguides for the 3.5 mu m mid-infrared range",

abstract = "We report on the direct laser fabrication of step-index waveguides in fused silica substrates for operation in the 3.5 mu m mid-infrared wavelength range. We demonstrate core-cladding index contrasts of 0.7% at 3.39 mu m and propagation losses of 1.3 (6.5) dB/cm at 3.39 (3.68) mu m, 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.",

keywords = "QUANTUM CASCADE LASERS, BULK FUSED-SILICA, FEMTOSECOND-LASER, CRYSTALS",

author = "Javier Martinez and Airan Rodenas and Toney Fernandez and {Vazquez de Aldana}, {Javier R.} and Thomson, {Robert R} and Magdalena Aguilo and Kar, {Ajoy Kumar} and Javier Solis and Francesc Diaz",

year = "2015",

month = dec,

day = "15",

doi = "10.1364/OL.40.005818",

language = "English",

volume = "40",

pages = "5818--5821",

journal = "Optics Letters",

issn = "0146-9592",

publisher = "OSA Publishing",

number = "24",

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TY - JOUR

T1 - 3D laser-written silica glass step-index high-contrast waveguides for the 3.5 mu m mid-infrared range

AU - Martinez, Javier

AU - Rodenas, Airan

AU - Fernandez, Toney

AU - Vazquez de Aldana, Javier R.

AU - Thomson, Robert R

AU - Aguilo, Magdalena

AU - Kar, Ajoy Kumar

AU - Solis, Javier

AU - Diaz, Francesc

PY - 2015/12/15

Y1 - 2015/12/15

N2 - We report on the direct laser fabrication of step-index waveguides in fused silica substrates for operation in the 3.5 mu m mid-infrared wavelength range. We demonstrate core-cladding index contrasts of 0.7% at 3.39 mu m and propagation losses of 1.3 (6.5) dB/cm at 3.39 (3.68) mu m, 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.

AB - We report on the direct laser fabrication of step-index waveguides in fused silica substrates for operation in the 3.5 mu m mid-infrared wavelength range. We demonstrate core-cladding index contrasts of 0.7% at 3.39 mu m and propagation losses of 1.3 (6.5) dB/cm at 3.39 (3.68) mu m, 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.

KW - QUANTUM CASCADE LASERS

KW - BULK FUSED-SILICA

KW - FEMTOSECOND-LASER

KW - CRYSTALS

U2 - 10.1364/OL.40.005818

DO - 10.1364/OL.40.005818

M3 - Article

C2 - 26670520

SN - 0146-9592

VL - 40

SP - 5818

EP - 5821

JO - Optics Letters

JF - Optics Letters

IS - 24

ER -

3D laser-written silica glass step-index high-contrast waveguides for the 3.5 mu m mid-infrared range

Abstract

Keywords

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