Role of scattering by surface roughness in the photoacoustic detection of hidden micro-structures

Autor: Stephen Edward, Vanessa Verrina, Stefan Witte, Paul C. M. Planken, Alessandro Antoncecchi, Hao Zhang

Publikováno v: Applied Optics, 59(30), 9499-9509. The Optical Society
Verrina, V, Edward, S, Zhang, H, Antoncecchi, A, Witte, S & Planken, P 2020, ' Role of scattering by surface roughness in the photoacoustic detection of hidden micro-structures ', Applied Optics, vol. 59, no. 30, pp. 9499-9509 . https://doi.org/10.1364/AO.397264

We present an experimental study in which we compare two different pump–probe setups to generate and detect high-frequency laser-induced ultrasound for the detection of gratings buried underneath optically opaque metal layers. One system is built a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76aaa8990d79e2186e94b6eca7bdc39c
https://doi.org/10.1364/ao.397264

Ultrafast laser-induced guided elastic waves in a freestanding aluminum membrane

Autor: Stephen Edward, Stefan Witte, Paul C. M. Planken, Hao Zhang, Alessandro Antoncecchi

Publikováno v: Zhang, H, Antoncecchi, A, Edward, S, Planken, P & Witte, S 2021, ' Ultrafast laser-induced guided elastic waves in a freestanding aluminum membrane ', Physical Review B, vol. 103, no. 6, 064303, pp. 1-10 . https://doi.org/10.1103/PhysRevB.103.064303
Physical Review B, 103(6):064303. American Physical Society
Physical Review B, 103(6):064303, 1-10. American Physical Society

Ultrafast laser-induced guided acoustic waves in thin, freely suspended films are important for many applications adopting the laser-ultrasonics technique. These waves show unique dispersion relations, leading to minimal propagation losses and acoust

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf3bc722e69662175d0081f79456de53
https://hdl.handle.net/11245.1/c5f7ebec-afeb-4eff-ab28-12bdf0516002

Laser-induced ultrasonics for detection of low-amplitude grating through metal layers with finite roughness

Autor: Hao Zhang, Stephen Edward, Stefan Witte, Paul C. M. Planken

Publikováno v: Edward, S, Zhang, H, Witte, S & Planken, P C M 2020, ' Laser-induced ultrasonics for detection of low-amplitude grating through metal layers with finite roughness ', Optics Express, vol. 28, no. 16, pp. 23374-23387 . https://doi.org/10.1364/OE.398134
Optics Express, 28(16), 23374-23387. The Optical Society
Optics Express

We report on the use of laser-induced ultrasonics for the detection of gratings with amplitudes as small as 0.5 nm, buried underneath an optically opaque nickel layer. In our experiments, we use gratings fabricated on top of a nickel layer on glass,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2a7678302691fe0037db5b4447b230a
https://hdl.handle.net/1871.1/27197555-0ca7-41e8-bd6c-cc6d145fdadc

Detection of Hidden Gratings through Multilayer Nanostructures Using Light and Sound

Autor: Alessandro Antoncecchi, Irwan Dani Setija, Vanessa Verrina, Hao Zhang, Stefan Witte, Paul C. M. Planken, Stephen Edward

Publikováno v: Physical Review Applied, 14(1):014015, 1-16. American Physical Society
Edward, S, Zhang, H, Setija, I, Verrina, V, Antoncecchi, A, Witte, S & Planken, P 2020, ' Detection of Hidden Gratings through Multilayer Nanostructures Using Light and Sound ', Physical Review Applied, vol. 14, no. 1, 014015, pp. 1-16 . https://doi.org/10.1103/PhysRevApplied.14.014015
Physical Review Applied, 14(1):014015. American Physical Society

We report on the detection of diffraction gratings buried below a stack of tens of 18-nm-thick SiO2 and Si3N4 layers and an optically opaque metal layer, using laser-induced, extremely high-frequency ultrasound. In our experiments, the shape and ampl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a623294a19572028ccc05485a89a13e
https://research.vu.nl/en/publications/ed83a9c2-0bed-4e5d-97ab-33bb4ce18d70

Characterization of thin metal films by ultrafast laser induced ultrasound

Autor: Stefan Witte, Paul C. M. Planken, Alessandro Antoncecchi, Stephen Edward, Hao Zhang

Publikováno v: Zhang, H, Antoncecchi, A, Edward, S, Planken, P & Witte, S 2019, Characterization of thin metal films by ultrafast laser induced ultrasound . in 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) : [Proceedings] ., 8871454, Institute of Electrical and Electronics Engineers Inc., 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, Munich, Germany, 23/06/19 . https://doi.org/10.1109/CLEOE-EQEC.2019.8871454
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC): [Proceedings]
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)

Ultrafast laser pulses incident on metals can lead to the generation of coherent phonon wave packets with frequencies in the gigahertz to terahertz range [1,2]. Material characterization using such ultrafast laser-induced ultrasound pulses provides a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1fa0ab727880d9b382fb770db8c0fe8
https://research.vu.nl/en/publications/82c96ec7-8151-4ce7-88af-dd37315e681f