Testing Aspheres

Pruß, Christof; Garbusi, Eugenio

doi:10.1364/opn.19.4.000024

Cited by 38 publications

(13 citation statements)

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“…[ 48,49 ] The equation for defining an aspheric contour in the yz ‐plane is

z = \frac{C \cdot y^{2}}{1 + \sqrt{1 - (1 + k) C^{2} y^{2}}}

, where C and k represent the curvature and conic constant, respectively. [ 50 ] In accordance with the objective of deflecting the incident light such that the propagation angle of the outgoing beam is increased by a factor of three compared to the incident angle, the contours for the designed OS1 and OS2 were determined to be

z_{1} = \frac{0.29 y^{2}}{1 + \sqrt{1 + 3.1 \times {(0.29)}^{2} y^{2}}}

and

z_{2} = \frac{0.87 y^{2}}{1 + \sqrt{1 - {(0.87)}^{2} y^{2}}}

, respectively. According to the design in Figure 2a, the doublet lens can be equivalently made by placing two flat sub‐lenses on either side of a substrate.…”

Section: Resultsmentioning

confidence: 99%

Multifunctional Beam Manipulation at Telecommunication Wavelengths Enabled by an All‐Dielectric Metasurface Doublet

Zhou

Lee

Park

et al. 2020

Advanced Optical Materials

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Multifunctional metasurfaces, which are planar devices featuring diverse functionalities, have attracted tremendous attention as they enable highly dense integration and miniaturization of photonic devices. Previous approaches based on spatial/spectral multiplexing of meta‐atoms on single metasurfaces are supposed to be inevitably limited in their functional diversity. An additional degree of freedom for design, achieved by cascading multiple metasurfaces into a single metasystem, promotes new combinations of functions that cannot be achieved with single‐layered metasurfaces. In this study, an all‐dielectric metasurface doublet (MD) is developed and implemented by vertically concatenating two arrays of rectangular nanoresonators on either side of a quartz substrate, in which distinct phase profiles are encoded for transverse magnetic and transverse electric polarized light. Multifunctional beam manipulation with concurrent increased beam deflection, beam reduction, and polarizing beam splitting is achieved at telecommunication wavelengths near 1550 nm. The MD is accurately created via lithographical nanofabrication, thus eliminating the extremely demanding post‐fabrication alignment. The proposed multifunctional metasurface is highly anticipated to expedite the development of advanced technologies for large‐scale photonic integration, optical metrology, light detection and ranging, spectroscopy, and optical processing.

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“…[ 48,49 ] The equation for defining an aspheric contour in the yz ‐plane is

z = \frac{C \cdot y^{2}}{1 + \sqrt{1 - (1 + k) C^{2} y^{2}}}

z_{1} = \frac{0.29 y^{2}}{1 + \sqrt{1 + 3.1 \times {(0.29)}^{2} y^{2}}}

and

z_{2} = \frac{0.87 y^{2}}{1 + \sqrt{1 - {(0.87)}^{2} y^{2}}}

, respectively. According to the design in Figure 2a, the doublet lens can be equivalently made by placing two flat sub‐lenses on either side of a substrate.…”

Section: Resultsmentioning

confidence: 99%

Multifunctional Beam Manipulation at Telecommunication Wavelengths Enabled by an All‐Dielectric Metasurface Doublet

Zhou

Lee

Park

et al. 2020

Advanced Optical Materials

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“…Використання інтерферометру Фізо, лазера та теле візійної камери на основі матриці із зарядовим зв'язком надало новий поштовх розвитку інтерференційних ме тодів. В результаті створено метод асферичних інтер ференційних зображень [10][11][12][13].…”

Section: аналіз літературних даних та постановка проблемиunclassified

Improvement connection control of optical components using TV means

Божко¹,

Сидоренко²,

Кущовий³

2015

TAPR

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Розглянуто основні види з'єднань оптичних деталей та визначені критерії їх міцності. Об ґрунтовано застосування телевізійних засобів для контролю дефектів оптичних деталей і їх з'єднань. Доведено можливість субпіксельного вимірювання геометричних розмірів об'єктів. Запропоновано застосування телевізійних засобів для контролю оптикоелектронних приладів і систем, зокрема клейових з'єднань фотоелектричних сонячних батарей. Ключові слова: оптичні деталі, телевізійний контроль, субпіксельне вимірювання, фотоелект ричні сонячні батареї.

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“…An aspheric lens is a lens whose every surface deviates from spherical symmetry in a literal sense 6 . However, optical designers typically consider aspheres to be non-spheric, rotationally symmetric surfaces that gradually vary in surface power from the center towards the edge in a radial fashion.…”

Section: Definition Of Aspheric Lensmentioning

confidence: 99%

A novel optical beam deflection detection system based on aspheric lens for high-speed atomic force microscope

et al. 2012

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The optical lever detection method has been widely used to detect the cantilever deflection in atomic force microscope (AFM) due to its simple mechanism and high sensitivity. The deflection detection of very small cantilever is a key and difficult issue in the development of a high-speed AFM. In this paper, a specially designed optical beam deflection detection system based on an aspheric lens is presented. The aspheric lens is fixed on an adjustable metal tube above the cantilever to focus the laser beam with a small spot. Two laser line beamsplitter cubes are installed symmetrically and oppositely over the aspheric lens with separately mounting a diode laser and a position sensitive detector (PSD) on two translation stages at the same height. The collimated laser beam is reflected down by one cube and focused by the aspheric lens at an off-centered position. The focused beam is then incident upon the cantilever and reflected back onto the opposite off-centered position. Change in the reflection angle caused by the cantilever deflection results in a parallel shift of the outgoing laser beam after the aspheric lens. The laser beam is finally reflected onto the PSD by the other cube. Experimental results show that the laser beam can be focused with a spot of less than 16 µm in diameter. With above system, the deflection detection of the small cantilever can be realized, which meets the requirement for the use in a high-speed AFM.

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Testing Aspheres

Cited by 38 publications

References 0 publications

Multifunctional Beam Manipulation at Telecommunication Wavelengths Enabled by an All‐Dielectric Metasurface Doublet

Multifunctional Beam Manipulation at Telecommunication Wavelengths Enabled by an All‐Dielectric Metasurface Doublet

Improvement connection control of optical components using TV means

A novel optical beam deflection detection system based on aspheric lens for high-speed atomic force microscope

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