Pseudoheterodyne detection for background-free near-field spectroscopy

Autor:	Rainer Hillenbrand, Nenad Ocelic, Andreas J. Huber
Rok vydání:	2006
Předmět:	Physics Physics and Astronomy (miscellaneous) business.industry Phase (waves) Near and far field Light scattering Interferometry Optics Astronomical interferometer Optoelectronics Near-field scanning optical microscope Heterodyne detection business Phase modulation
Zdroj:	Applied Physics Letters. 89:101124
ISSN:	1077-3118 0003-6951
Popis:	The authors present a detection technique for scattering-type near-field optical microscopy capable of background interference elimination in the entire near-UV to far-IR spectral range. It simultaneously measures near-field optical signal amplitude and phase by interferometric detection of scattered light utilizing a phase-modulated reference wave. They compare its background suppression efficiency to other known methods and experimentally show that it provides a reliable near-field optical material contrast even in the case where both noninterferometric and homodyne interferometric detection methods fail.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2d28fa4fe9b25b0f598a21974239de0c https://doi.org/10.1063/1.2348781 Zobrazit plný text záznamu