Antireflection effect in ultrahigh spatial-frequency holographic relief gratings

Ono, Yuzo; Kimura, Yasuo; Ohta, Yoshinori; Nishida, Nobuo

doi:10.1364/ao.26.001142

Cited by 180 publications

(91 citation statements)

References 4 publications

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“…This allows for use of the technology on a much larger range of materials compared to thin films and eliminates the issues related with film-substrate adhesion. The very low levels of reflectance achieved by nature using moth-eye arrays have inspired many attempts to replicate such structures in technologically-important materials including photoresist on glass [6][7][8][9], in quartz [10][11][12][13][14] and in silicon [15][16][17][18][19][20][21]. Applications include solar cells [7,22,23 [27] are often employed for this, however these processes lend themselves to the formation of regular arrays of pillars arranged in a square or hexagonal array across the whole of the patterned area.…”

Section: Introductionmentioning

confidence: 99%

Suppression of backscattered diffraction from sub-wavelength ‘moth-eye’ arrays

Stavroulakis¹,

Boden²,

Bagnall³

2013

Opt. Express

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Abstract:The eyes and wings of some species of moth are covered with arrays of nanoscale features that dramatically reduce reflection of light. There have been multiple examples where this approach has been adapted for use in antireflection and antiglare technologies with the fabrication of artificial moth-eye surfaces. In this work, the suppression of iridescence caused by the diffraction of light from such artificial regular moth-eye arrays at high angles of incidence is achieved with the use of a new tiled domain design, inspired by the arrangement of features on natural moth-eye surfaces. This bio-mimetic pillar architecture contains high optical rotational symmetry and can achieve high levels of diffraction order power reduction. For example, a tiled design fabricated in silicon and consisting of domains with 9 different orientations of the traditional hexagonal array exhibited a ~96% reduction in the intensity of the −1 diffraction order. It is suggested natural moth-eye surfaces have evolved a tiled domain structure as it confers efficient antireflection whilst avoiding problems with high angle diffraction. This combination of antireflection and stealth properties increases chances of survival by reducing the risk of the insect being spotted by a predator. Furthermore, the tiled domain design could lead to more effective artificial moth-eye arrays for antiglare and stealth applications. 1142-1146 (1987). 9. S. J. Wilson and M. C. Hutley, "The optical properties of "moth eye" antireflection surfaces," Opt. Acta (Lond.) 29(7), 993-1009 (1982). 10. R. C. Enger and S. K. Case, "Optical elements with ultrahigh spatial-frequency surface corrugations," Appl. Opt. 3220-3228 (1983). 11. K. M. Baker, "Highly corrected close-packed microlens arrays and moth-eye structuring on curved surfaces," Appl. Opt. 38(2), 352-356 (1999 53-56 (1997). 19. D. L. Brundrett, T. K. Gaylord, and E. N. Glytsis, "Polarizing mirror/absorber for visible wavelengths based on a silicon subwavelength grating: design and fabrication," Appl. Opt. 37(13), 2534-2541 (1998). 20. Y. Kanamori, K. Hane, H. Sai, and H. Yugami, "100 nm period silicon antireflection structures fabricated using a porous alumina membrane mask," Appl. Phys. Lett. 22(20),

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Section: Introductionmentioning

confidence: 99%

Suppression of backscattered diffraction from sub-wavelength ‘moth-eye’ arrays

Stavroulakis¹,

Boden²,

Bagnall³

2013

Opt. Express

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“…Antireflective condition can be generated by forming SWSs in front of the detector [174]. Such structures are also denoted as high spatial frequency structures or subwavelength surface textures [175]. SWSs generally have a two-fold function in light management in photodetectors: since they effectively represent gradientindex structures, they produce a broadband impedance matching that leads to a broadband AR performance.…”

Section: Sws For Armentioning

confidence: 99%

Emerging technologies for high performance infrared detectors

2017

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Infrared photodetectors (IRPDs) have become important devices in various applications such as night vision, military missile tracking, medical imaging, industry defect imaging, environmental sensing, and exoplanet exploration. Mature semiconductor technologies such as mercury cadmium telluride and III-V material-based photodetectors have been dominating the industry. However, in the last few decades, significant funding and research has been focused to improve the performance of IRPDs such as lowering the fabrication cost, simplifying the fabrication processes, increasing the production yield, and increasing the operating temperature by making use of advances in nanofabrication and nanotechnology. We will first review the nanomaterial with suitable electronic and mechanical properties, such as two-dimensional material, graphene, transition metal dichalcogenides, and metal oxides. We compare these with more traditional lowdimensional material such as quantum well, quantum dot, quantum dot in well, semiconductor superlattice, nanowires, nanotube, and colloid quantum dot. We will also review the nanostructures used for enhanced lightmatter interaction to boost the IRPD sensitivity. These include nanostructured antireflection coatings, optical antennas, plasmonic, and metamaterials.

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“…Because photopolymer isn't hard sufficiently for optical copy process, a protection glass sheet covers the contacting surface. The following equation (3) is applied to calculate the diffraction efficiency (DE) [14]. The hologram master has low light efficiency, which is sum of 0th order and 1st order efficiency, as an ordinary amplitude hologram does.…”

Section: Development Of the Binary Hologram Master (Eb Lithography)mentioning

confidence: 99%

Development and Evaluation of a Binary Grating consisting of Multi-layer Diffraction

Higuchi¹

2008

J. Photopol. Sci. Technol.

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Antireflection effect in ultrahigh spatial-frequency holographic relief gratings

Cited by 180 publications

References 4 publications

Suppression of backscattered diffraction from sub-wavelength ‘moth-eye’ arrays

Suppression of backscattered diffraction from sub-wavelength ‘moth-eye’ arrays

Emerging technologies for high performance infrared detectors

Development and Evaluation of a Binary Grating consisting of Multi-layer Diffraction

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