Research output: Contribution to journal › Article › peer-review
Fabrication of Anti-Reflection Coatings on GaSe Crystal Surfaces by Laser-Induced Periodic Surface Structuring. / Gurbatov, S. O.; Borodaenko, Yu M.; Pavlov, D. V. et al.
In: Bulletin of the Russian Academy of Sciences: Physics, Vol. 86, 12.01.2022, p. S81-S84.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Fabrication of Anti-Reflection Coatings on GaSe Crystal Surfaces by Laser-Induced Periodic Surface Structuring
AU - Gurbatov, S. O.
AU - Borodaenko, Yu M.
AU - Pavlov, D. V.
AU - Mitsai, E. V.
AU - Yelisseyev, A. P.
AU - Lobanov, S. I.
AU - Isaenko, L. I.
AU - Kuchmizhak, A. A.
N1 - This work was supported by Russian Science Foundation: grant no. 21-72-20122 (laser processing experiments, characterization by scanning electron microscopy, Raman micro-spectroscopy, Fourier-transform infrared spectroscopy and Finite-Difference Time-Domain simulations), grant no. 20-72-10027 (growth of crystal). Fabrication of Anti-Reflection Coatings on GaSe Crystal Surfaces by Laser-Induced Periodic Surface Structuring / S. O. Gurbatov, Yu. M. Borodaenko, D. V. Pavlov [et al.] // Bulletin of the Russian Academy of Sciences: Physics. – 2022. – Vol. 86, No. S1. – P. S81-S84. – DOI 10.3103/s1062873822700435.
PY - 2022/1/12
Y1 - 2022/1/12
N2 - Abstract: Direct laser processing technologies utilizing femtosecond (fs) pulses allow to create diverse surface morphologies promising for tuning surface reflectivity. In this work, antireflection microstructures (ARMs) representing so-called laser-induced periodic surface structures (LIPSSs) with different orientation, period and roughness were fabricated on the surface of a GaSe crystal for the first time by direct fs-laser patterning. The morphological and structural properties of the fabricated LIPSSs were systematically characterized by combining scanning electron microscopy and Raman micro-spectroscopy, while their optical properties were assessed by Fourier-transform infrared spectroscopy and Finite-Difference Time-Domain simulations. The LIPSSs-based ARMs formed on both sides of the GaSe monocrystals were shown to provide 20% increase in total transmittance of the 2 mm thick GaSe crystal (being compared to pristine one) within 5–14 µm spectral range. Moreover, numerical simulations show no additional light localization effects in the near-surface layer of the LIPSS-patterned surface, highlighting applicability of the laser processing methods for improvement of the optical characteristics of the nonlinear crystals without deterioration of their optical damage threshold.
AB - Abstract: Direct laser processing technologies utilizing femtosecond (fs) pulses allow to create diverse surface morphologies promising for tuning surface reflectivity. In this work, antireflection microstructures (ARMs) representing so-called laser-induced periodic surface structures (LIPSSs) with different orientation, period and roughness were fabricated on the surface of a GaSe crystal for the first time by direct fs-laser patterning. The morphological and structural properties of the fabricated LIPSSs were systematically characterized by combining scanning electron microscopy and Raman micro-spectroscopy, while their optical properties were assessed by Fourier-transform infrared spectroscopy and Finite-Difference Time-Domain simulations. The LIPSSs-based ARMs formed on both sides of the GaSe monocrystals were shown to provide 20% increase in total transmittance of the 2 mm thick GaSe crystal (being compared to pristine one) within 5–14 µm spectral range. Moreover, numerical simulations show no additional light localization effects in the near-surface layer of the LIPSS-patterned surface, highlighting applicability of the laser processing methods for improvement of the optical characteristics of the nonlinear crystals without deterioration of their optical damage threshold.
KW - GaSe crystal
KW - LIPSS
KW - antireflection microstructures
KW - optical properties
KW - transmittance
UR - https://www.mendeley.com/catalogue/db04d3e2-4307-3f86-b501-8360a41080ea/
UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105002134929&origin=inward
UR - https://elibrary.ru/item.asp?id=59044044
U2 - 10.3103/S1062873822700435
DO - 10.3103/S1062873822700435
M3 - Article
VL - 86
SP - S81-S84
JO - Bulletin of the Russian Academy of Sciences: Physics
JF - Bulletin of the Russian Academy of Sciences: Physics
SN - 1062-8738
ER -
ID: 68451743