Naslov
Photonic Nanojet of a Microsphere for Raman Scattering Enhancement
(Photonic Nanojet of a Microsphere for Raman Scattering Enhancement)

Autori
Gašparić, Vlatko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Science and educational challenges facing Europe in the next decade : On the occasion of the 250th anniversary of the birth of Alexander von Humboldt (1769– 1859) : book of abstracts : Zagreb, October 10-11, 2019 = Herausforderungen Für Wissenschaft und Bildung In Europa Im Nächsten Jahrzehnt : Zum 250. Geburtsjubiläum von Alexander von Humboldt (1769–1859) : Buch Der Zusammenfassungen / Ivanda, Mile ; Skenderović, Hrvoje - Zagreb, 2019, 36-36

ISBN
978-953-97333-6-8

Skup
Humboldt College: Science and educational challenges facing Europe in the next decade, On the occasion of the 250th anniversary of the birth of Alexander von Humboldt (1769-1859)

Mjesto i datum
Zagreb, Hrvatska, 10.10.2019. - 11.10.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
optical microsphere ; photonic nanojet ; Raman scattering ; Generalized Lorenz-Mie theory

Sažetak
A new method for enhancing the Raman scattering signal has emerged recently, based on dielectric enhancement. Especially promising is the dielectric method based on microspheres and photonic nanojet. The formation of the photonic nanojet is presented through Generalized Lorenz- Mie theory (GLMT) of light scattering from a microsphere, together with important properties and parameters for formation. Simulation images of the photonic nanojet are shown with the help of homemade GLMT computer program and numerical simulations from other research. Experimental vertical Raman mappings of a 5-µm microsphere on top of a silicon substrate are presented. Enhancement value on maps was the highest (5.7x) for 0.50 NA objective, when the incident beam was focused 9 µm below the top of the sphere. Furthermore, dielectric enhancement can be combined with surface enhanced Raman scattering (SERS), where other research is shown together with future plans.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA