Polarization-independent optical spatial differentiation with a doubly-resonant one-dimensional guided-mode grating

Autor: Ali Akbar Darki, Søren Peder Madsen, Aurélien Dantan

Publikováno v: Darki, A A, Madsen, S P & Dantan, A R 2022, ' Polarization-independent optical spatial differentiation with a doubly-resonant one-dimensional guided-mode grating ', Optics Express, vol. 30, no. 3, pp. 3962-3972 . https://doi.org/10.1364/OE.450981

We report on the design and experimental characterization of a suspended silicon nitride subwavelength grating possessing a polarization-independent guided-mode resonance at oblique incidence. At this resonant wavelength we observe that the transvers

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f7a39a648650f93ab1cb49bda268669
https://pure.au.dk/portal/da/publications/polarizationindependent-optical-spatial-differentiation-with-a-doublyresonant-onedimensional-guidedmode-grating(c7df6910-6619-4f36-b2c3-1745b64b5592).html

Suspended subwavelength gratings for optical processing and optomechanics

Autor: Ali Akbar Darki, Alexios Parthenopoulos, Aurélien Dantan, Bjarke R. Jeppesen, Jens Vinge Nygaard

Publikováno v: Darki, A A, Parthenopoulos, A, Jeppesen, B R, Nygaard, J V & Dantan, A 2021, Suspended subwavelength gratings for optical processing and optomechanics . in C J Chang-Hasnain, J A Fan & W Zhou (eds), High Contrast Metastructures X ., 116951N, SPIE-International Society for Optical Engineering, Proceedings of SPIE-The International Society for Optical Engineering, vol. 11695, High Contrast Metastructures X 2021, Virtual, Online, United States, 06/03/2021 . https://doi.org/10.1117/12.2585455

Owing to their high optical and mechanical quality suspended silicon nitride thin films are widely used for photonics and sensing applications. We discuss the fabrication and characterization of highly reflective one- dimensional subwavelength gratin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e2fbb910a6a3326389adb54551c2b03
https://pure.au.dk/portal/da/publications/suspended-subwavelength-gratings-for-optical-processing-and-optomechanics(52a044f5-6f55-4607-b05e-bc626cfbd8ac).html

Profilometry and stress analysis of suspended nanostructured thin films

Autor: Alexios Parthenopoulos, Jens Vinge Nygaard, Aurélien Dantan, Ali Akbar Darki

Publikováno v: Darki, A A, Parthenopoulos, A, Nygaard, J V & Dantan, A 2020, ' Profilometry and stress analysis of suspended nanostructured thin films ', J. Appl. Phys. . https://doi.org/10.1063/5.0037406
Darki, A A, Parthenopoulos, A, Nygaard, J V & Dantan, A R 2021, ' Profilometry and stress analysis of suspended nanostructured thin films ', Journal of Applied Physics, vol. 129, no. 6, 065302 . https://doi.org/10.1063/5.0037406

The profile of suspended silicon nitride thin films patterned with one-dimensional subwavelength grating structures is investigated using Atomic Force Microscopy. We first show that the results of the profilometry can be used as input to Rigorous Cou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5921908ec0010757cae46cf8eeffbd1
https://pure.au.dk/portal/da/publications/profilometry-and-stress-analysis-of-suspended-nanostructured-thin-films(e798b03b-b24e-4c84-859c-1f35733c9ef3).html

Modeling and Optimization of an Elliptical Shape Ultrasonic Motor Using Combination of Finite Element Method and Design of Experiments

Autor: Ali Akbar Darki, Ali Reza Shahidi, Javad Akbari, Hamed Sanikhani

Publikováno v: Volume 8: Dynamic Systems and Control, Parts A and B.

Standing-wave ultrasonic motors are a modern class of positioning systems, which are used to deliver a high precision linear or rotary motion with an unlimited stroke. The design process should be performed through an effective optimization algorithm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4bf83b953e2d9c56aaacde2fda613fd9
https://doi.org/10.1115/imece2010-40074

Mechanical investigations of free-standing SiN membranes patterned with one-dimensional photonic crystal structures.

Autor: Akbar Darki, Ali, Vinther Nielsen, Robin, Vinge Nygaard, Jens, Dantan, Aurélien

Publikováno v: Journal of Applied Physics; 5/21/2022, Vol. 131 Issue 19, p1-11, 11p