Nano-FTIR spectroscopy reveals SiO2 densification within fs-laser induced nanogratings

Nadezhda Shchedrina; Gergely Nemeth; Ferenc Borondics; Nadege Ollier; Matthieu Lancry

doi:10.1039/d4na00409d

Nano-FTIR spectroscopy reveals SiO₂ densification within fs-laser induced nanogratings

Nadezhda Shchedrina
, Gergely Nemeth
, Ferenc Borondics
, Nadege Ollier
, Matthieu Lancry

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

Abstract

This study explores the structural transformations induced by femtosecond (fs) laser inscriptions in glass, with a focus on type II modifications (so-called nanogratings), crucial for advanced optical and photonic technologies. Our novel approach employs scattering-type scanning near-field optical microscopy (s-SNOM) and synchrotron radiation nanoscale Fourier-transform infrared spectroscopy (nano-FTIR) to directly assess the nanoscale structural changes in the laser tracks, potentially offering a comprehensive understanding of the underlying densification mechanisms. The results reveal the first direct nanoscale evidence of densification driven by HP-HT within fs-laser inscribed tracks, characterized by a significant shift of the main infrared (IR) vibrational structural band of silica glass. It reveals moreover a complex interplay between type I and type II modifications.

Original language	English
Pages (from-to)	5164-5170
Number of pages	7
Journal	Nanoscale Advances
Volume	6
Issue number	20
DOIs	https://doi.org/10.1039/d4na00409d
Publication status	Published - 6 Aug 2024
Externally published	Yes

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10.1039/d4na00409d

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title = "Nano-FTIR spectroscopy reveals SiO2 densification within fs-laser induced nanogratings",

abstract = "This study explores the structural transformations induced by femtosecond (fs) laser inscriptions in glass, with a focus on type II modifications (so-called nanogratings), crucial for advanced optical and photonic technologies. Our novel approach employs scattering-type scanning near-field optical microscopy (s-SNOM) and synchrotron radiation nanoscale Fourier-transform infrared spectroscopy (nano-FTIR) to directly assess the nanoscale structural changes in the laser tracks, potentially offering a comprehensive understanding of the underlying densification mechanisms. The results reveal the first direct nanoscale evidence of densification driven by HP-HT within fs-laser inscribed tracks, characterized by a significant shift of the main infrared (IR) vibrational structural band of silica glass. It reveals moreover a complex interplay between type I and type II modifications.",

author = "Nadezhda Shchedrina and Gergely Nemeth and Ferenc Borondics and Nadege Ollier and Matthieu Lancry",

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doi = "10.1039/d4na00409d",

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AU - Shchedrina, Nadezhda

AU - Nemeth, Gergely

AU - Borondics, Ferenc

AU - Ollier, Nadege

AU - Lancry, Matthieu

PY - 2024/8/6

Y1 - 2024/8/6

N2 - This study explores the structural transformations induced by femtosecond (fs) laser inscriptions in glass, with a focus on type II modifications (so-called nanogratings), crucial for advanced optical and photonic technologies. Our novel approach employs scattering-type scanning near-field optical microscopy (s-SNOM) and synchrotron radiation nanoscale Fourier-transform infrared spectroscopy (nano-FTIR) to directly assess the nanoscale structural changes in the laser tracks, potentially offering a comprehensive understanding of the underlying densification mechanisms. The results reveal the first direct nanoscale evidence of densification driven by HP-HT within fs-laser inscribed tracks, characterized by a significant shift of the main infrared (IR) vibrational structural band of silica glass. It reveals moreover a complex interplay between type I and type II modifications.

AB - This study explores the structural transformations induced by femtosecond (fs) laser inscriptions in glass, with a focus on type II modifications (so-called nanogratings), crucial for advanced optical and photonic technologies. Our novel approach employs scattering-type scanning near-field optical microscopy (s-SNOM) and synchrotron radiation nanoscale Fourier-transform infrared spectroscopy (nano-FTIR) to directly assess the nanoscale structural changes in the laser tracks, potentially offering a comprehensive understanding of the underlying densification mechanisms. The results reveal the first direct nanoscale evidence of densification driven by HP-HT within fs-laser inscribed tracks, characterized by a significant shift of the main infrared (IR) vibrational structural band of silica glass. It reveals moreover a complex interplay between type I and type II modifications.

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DO - 10.1039/d4na00409d

M3 - Article

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SP - 5164

EP - 5170

JO - Nanoscale Advances

JF - Nanoscale Advances

IS - 20

ER -

Nano-FTIR spectroscopy reveals SiO2 densification within fs-laser induced nanogratings

Abstract

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Nano-FTIR spectroscopy reveals SiO₂ densification within fs-laser induced nanogratings