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Enhancing Quartz Infrared Absorption by Tuning Femtosecond Laser Surface Texturing Patterns.

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Title: Enhancing Quartz Infrared Absorption by Tuning Femtosecond Laser Surface Texturing Patterns.
Authors: Petruzzellis, Isabella1 (AUTHOR), De Palo, Raffaele2 (AUTHOR) raffaele.depalo@poliba.it, Zifarelli, Andrea3 (AUTHOR), Patimisco, Pietro3,4 (AUTHOR), Sfregola, Felice Alberto3,5 (AUTHOR), Caragnano, Stefania1,3,5 (AUTHOR), Gaudiuso, Caterina2,5 (AUTHOR), Mezzapesa, Francesco Paolo3,5 (AUTHOR), Spagnolo, Vincenzo2,4 (AUTHOR), Ancona, Antonio3,5 (AUTHOR), Volpe, Annalisa2,5 (AUTHOR)
Source: Materials (1996-1944). Jul2026, Vol. 19 Issue 13, p2810. 12p.
Subjects: Infrared absorption, Surface texture, Laser ablation, Femtosecond lasers, Photodetectors, Optoelectronics, Quartz, Light absorption
Abstract: Quartz is widely employed in optoelectronic and sensing applications owing to its excellent mechanical and chemical properties. However, its intrinsic transparency up to 5 μm limits its direct use as a photodetection substrate across the near- and mid-infrared spectral regions. Laser surface texturing for the fabrication of the so-called black quartz represents a promising strategy to overcome this limitation. In this work, different femtosecond (fs) laser texturing strategies were investigated on a 1 mm thick α-quartz wafer, namely uniform milling, grid-patterned grooves, and localized arrays of ablated craters. The fs-laser-treated quartz samples showed a transmittance reduction of up to 60% within the quartz transparency window in the infrared range, with crater matrices providing the most effective blackening performance. The enhanced absorption was attributed to light-trapping effects induced by the tapered crater geometry, which promotes multiple internal reflections and increased optical confinement within the substrate. The proposed strategy demonstrates a reliable, maskless, and chemical-free surface functionalization strategy for the fabrication of quartz-based substrates for broadband infrared photodetection in sensing applications. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Header DbId: egs
DbLabel: Engineering Source
An: 195440735
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  Label: Title
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  Data: Enhancing Quartz Infrared Absorption by Tuning Femtosecond Laser Surface Texturing Patterns.
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  Data: <searchLink fieldCode="AR" term="%22Petruzzellis%2C+Isabella%22">Petruzzellis, Isabella</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22De+Palo%2C+Raffaele%22">De Palo, Raffaele</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> raffaele.depalo@poliba.it</i><br /><searchLink fieldCode="AR" term="%22Zifarelli%2C+Andrea%22">Zifarelli, Andrea</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Patimisco%2C+Pietro%22">Patimisco, Pietro</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sfregola%2C+Felice+Alberto%22">Sfregola, Felice Alberto</searchLink><relatesTo>3,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Caragnano%2C+Stefania%22">Caragnano, Stefania</searchLink><relatesTo>1,3,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gaudiuso%2C+Caterina%22">Gaudiuso, Caterina</searchLink><relatesTo>2,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mezzapesa%2C+Francesco+Paolo%22">Mezzapesa, Francesco Paolo</searchLink><relatesTo>3,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Spagnolo%2C+Vincenzo%22">Spagnolo, Vincenzo</searchLink><relatesTo>2,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ancona%2C+Antonio%22">Ancona, Antonio</searchLink><relatesTo>3,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Volpe%2C+Annalisa%22">Volpe, Annalisa</searchLink><relatesTo>2,5</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Jul2026, Vol. 19 Issue 13, p2810. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Infrared+absorption%22">Infrared absorption</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+texture%22">Surface texture</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+ablation%22">Laser ablation</searchLink><br /><searchLink fieldCode="DE" term="%22Femtosecond+lasers%22">Femtosecond lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Photodetectors%22">Photodetectors</searchLink><br /><searchLink fieldCode="DE" term="%22Optoelectronics%22">Optoelectronics</searchLink><br /><searchLink fieldCode="DE" term="%22Quartz%22">Quartz</searchLink><br /><searchLink fieldCode="DE" term="%22Light+absorption%22">Light absorption</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Quartz is widely employed in optoelectronic and sensing applications owing to its excellent mechanical and chemical properties. However, its intrinsic transparency up to 5 μm limits its direct use as a photodetection substrate across the near- and mid-infrared spectral regions. Laser surface texturing for the fabrication of the so-called black quartz represents a promising strategy to overcome this limitation. In this work, different femtosecond (fs) laser texturing strategies were investigated on a 1 mm thick α-quartz wafer, namely uniform milling, grid-patterned grooves, and localized arrays of ablated craters. The fs-laser-treated quartz samples showed a transmittance reduction of up to 60% within the quartz transparency window in the infrared range, with crater matrices providing the most effective blackening performance. The enhanced absorption was attributed to light-trapping effects induced by the tapered crater geometry, which promotes multiple internal reflections and increased optical confinement within the substrate. The proposed strategy demonstrates a reliable, maskless, and chemical-free surface functionalization strategy for the fabrication of quartz-based substrates for broadband infrared photodetection in sensing applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.3390/ma19132810
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 12
        StartPage: 2810
    Subjects:
      – SubjectFull: Infrared absorption
        Type: general
      – SubjectFull: Surface texture
        Type: general
      – SubjectFull: Laser ablation
        Type: general
      – SubjectFull: Femtosecond lasers
        Type: general
      – SubjectFull: Photodetectors
        Type: general
      – SubjectFull: Optoelectronics
        Type: general
      – SubjectFull: Quartz
        Type: general
      – SubjectFull: Light absorption
        Type: general
    Titles:
      – TitleFull: Enhancing Quartz Infrared Absorption by Tuning Femtosecond Laser Surface Texturing Patterns.
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            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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