Laser-induced damage properties of antireflective porous glasses

Du, Ying; Liu, Shijie; He, Hongbo; Jin, Yunxia; Kong, Fanzuo; Guan, Heyuan

doi:10.1016/j.optcom.2012.07.120

Cited by 17 publications

(11 citation statements)

References 16 publications

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“…Nanostructuring the surfaces of dielectric materials is often used to improve transmission at the silicon/air interface in IR applications. As previously mentioned, one of the main applications of NALs is enhancing transmission of light through optical elements used in high-power-laser applications [25] [28] [29] [30]. In such applications, it is also crucial to avoid scattering.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Motheye Nanostructures and Achieving 100% Transmission

Mousavi¹,

Talarposhti²

2020

JAMP

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Nanostructured Antireflections Layers (NALs) are a promising substitute for conventional antireflection layers. In the nature, such structures have long existed on insects' eyes. Here, we have derived a general form of mathematical relation that generates a profile close to that of surface of a Moth's eye. By properly designing NALs over dielectric, light has been efficiently transmitted through our high index nanostructures with minimal reflection. The parameters determining the transmission efficiency are the pitch and the profile of the periodic nanostructures. By optimizing the profile, we have designed NALs with transmission reaching 100%. Our periodic structures have minimal dependence on the pitch. This makes it possible to fabricate NALs with the very broadband transmission, without inducing diffraction to lower wavelengths of the transmitted light. Also, our periodic NALs make it possible to transmit laser lights without scattering.

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Section: Introductionmentioning

confidence: 99%

Optimizing Motheye Nanostructures and Achieving 100% Transmission

Mousavi¹,

Talarposhti²

2020

JAMP

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“…Nanostructuring the surfaces of silicon can be used to improve transmission at the silicon/air interface in IR applications. As previously mentioned, one of the main applications of NALs is enhancing transmission of light through optical elements used in high-powerlaser applications [29] [30]. In such applications, it is also crucial to avoid scattering.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Mechanical Stability of Nano-Structured Anti-Reflection Coatings

Mousavi¹,

Busani²,

Zadeh³

et al. 2020

JAMP

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Periodic Nanostructured anti-reflection coatings (NALs) are a promising option for enhancing transmission of coherent light without inducing scattering. We've found that reducing the height of NALs below a critical value to enhance mechanical stability can highly reduce the transmission efficiency. Here, using Rigorous Couples Wave Analysis (RCWA), we find the minimum height for over 99% transmission and effect of height on transmission bandwidth. Then, during a one-step plasma etching, two samples with different heights have been generated and their efficiency is evaluated using RCWA.

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“…Three dimensional ordered 25 , 26 and disordered 25 , 27 , 28 nano-structures were also manufactured for high power laser applications. Li et al .…”

Section: Introductionmentioning

confidence: 99%

“…However, Du et al . argued that for a small period-to-wavelength ratio, electromagnetic fields do not vary spatially and the periodicity of nanostructures would be less important to their performance 27 . In this sense, the ordered nanoporous coating was not a typical photonic crystal for the laser used in the testing.…”

Section: Introductionmentioning

confidence: 99%

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Laser damage resistance of polystyrene opal photonic crystals

Pan

Xü

et al. 2018

Sci Rep

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The laser damage behavior of three-dimensional photonic crystals (3D-PCs) with an opal structure is investigated using both experimental and simulation methods. Polystyrene (PS) colloidal crystals films with a reflection peak at 1064 nm are used as the model material. Disordered films (DF) are fabricated with PS microspheres as contrast samples. The laser-induced damage threshold (LIDT) of 3D-PCs is tested, which is as 2.35 times high as the LIDT of DF. All laser damages are derived from defects in 3D-PCs, implying that the LIDT of ideal 3D-PCs will be significantly increased. The simulation results show that the electric field is contained in the pores of 3D-PCs while it is reduced in the PS microspheres, which may decrease the absorption of laser energy by 3D-PCs. In contrast, the electric field distribution is irregular in DF. Enhanced electric field areas are located in both the pores and microspheres of DF. Considering higher electric field intensity causes more energy absorption and higher temperature, the DF have a lower LIDT. The 3D-PCs structure uses ordered vacancy to contain and strike back laser energy and can increase the LIDT without changing the chemical composition of materials.

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Laser-induced damage properties of antireflective porous glasses

Cited by 17 publications

References 16 publications

Optimizing Motheye Nanostructures and Achieving 100% Transmission

Optimizing Motheye Nanostructures and Achieving 100% Transmission

Enhancing Mechanical Stability of Nano-Structured Anti-Reflection Coatings

Laser damage resistance of polystyrene opal photonic crystals

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