TY - JOUR

T1 - Highly Regular Laser-Induced Periodic Surface Structures on Titanium Thin Films for Photonics and Fiber Optics

AU - Bronnikov, Kirill

AU - Terentyev, Vadim

AU - Simonov, Victor

AU - Fedyaj, Vladislav

AU - Simanchuk, Andrey

AU - Babin, Sergei A.

AU - Lapidas, Vasily

AU - Mitsai, Eugeny

AU - Cherepakhin, Artem

AU - Zhang, Junjie

AU - Zhizhchenko, Alexey

AU - Kuchmizhak, Aleksandr A.

AU - Dostovalov, Alexandr

N1 - The work was supported by the Russian Science Foundation grant (No. 21-72-20162). In the research, we used the equipment of the following Multiple Access Centres (MACs): the MAC of the Far Eastern Federal University (FEFU) and the MAC \u201CHigh-resolution spectroscopy of gases and condensed matters\u201D at IAE SB RAS, MAC of the Novosibirsk State University (NSU).

PY - 2024/12/18

Y1 - 2024/12/18

N2 - Modern photonic devices demand low-cost, scalable methods for creating periodic patterns over diverse surfaces including nonplanar and tipped ones, the examples of which can be readily found in fiber optics. Laser-induced periodic surface structures (LIPSS) offer an attractive route for fabricating such patterns in a single-step straightforward procedure, where the temporal and spatial locality of the self-interference effects ensure robustness against variations of the laser processing parameters. In this work, we show the LIPSS-assisted oxidation of thin titanium films by near-IR femtosecond laser pulses as a promising technology for the production of regular gratings consisting of rutile ridges. The self-terminating nature of the oxidation process allows the predefinition of the grating relief by the initial thickness of the titanium film, rendering the fabrication process with reproducibility and stability to variations of the laser parameters. LIPSS were found to act as gratings providing a diffraction efficiency above 7%. Such gratings were recorded over sidewalls of the optical fibers as well as their endfaces, allowing free space light coupling into the guided mode at the incidence angles up to 65° exceeding fiber acceptance angles. Additionally, gratings recorded over the polished side of the D-shaped fiber were found to act as a Bragg grating manifesting itself through a narrow resonance (

AB - Modern photonic devices demand low-cost, scalable methods for creating periodic patterns over diverse surfaces including nonplanar and tipped ones, the examples of which can be readily found in fiber optics. Laser-induced periodic surface structures (LIPSS) offer an attractive route for fabricating such patterns in a single-step straightforward procedure, where the temporal and spatial locality of the self-interference effects ensure robustness against variations of the laser processing parameters. In this work, we show the LIPSS-assisted oxidation of thin titanium films by near-IR femtosecond laser pulses as a promising technology for the production of regular gratings consisting of rutile ridges. The self-terminating nature of the oxidation process allows the predefinition of the grating relief by the initial thickness of the titanium film, rendering the fabrication process with reproducibility and stability to variations of the laser parameters. LIPSS were found to act as gratings providing a diffraction efficiency above 7%. Such gratings were recorded over sidewalls of the optical fibers as well as their endfaces, allowing free space light coupling into the guided mode at the incidence angles up to 65° exceeding fiber acceptance angles. Additionally, gratings recorded over the polished side of the D-shaped fiber were found to act as a Bragg grating manifesting itself through a narrow resonance (

KW - diffraction gratings

KW - femtosecond lasers

KW - fiber optics

KW - laser-induced periodic surface structures (LIPSS)

KW - plasmonic sensors

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85211348298&origin=inward&txGid=4635b3050e4e468190bb4d19ba076963

UR - https://www.mendeley.com/catalogue/898498a7-53b9-3aec-96b5-c51ec7a3b8a8/

U2 - 10.1021/acsami.4c15455

DO - 10.1021/acsami.4c15455

M3 - Article

C2 - 39641598

SP - 70047

EP - 70056

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

SN - 1944-8244

ER -