Highly sensitive mode mapping of whispering-gallery modes by scanning thermocouple-probe microscopy

Autor:	M. I. Dobynde, Angela E. Klein, Andreas Tünnermann, Carsten Schmidt, Mattes Liebsch, Thomas Pertsch, Norik Janunts
Přispěvatelé:	Publica
Rok vydání:	2014
Předmět:	Materials science Microscope business.industry Physics::Optics Atomic and Molecular Physics and Optics law.invention Scanning probe microscopy Resonator Light intensity Optics Thermocouple law Microscopy Near-field scanning optical microscope Whispering-gallery wave business
Zdroj:	Optics Letters. 39:1157
ISSN:	1539-4794 0146-9592
DOI:	10.1364/ol.39.001157
Popis:	We propose a method for mapping optical near-fields with the help of a thermocouple scanning-probe microscope tip. As the tip scans the sample surface, its apex is heated by light absorption, generating a thermovoltage. The thermovoltage map represents the intensity distribution of light at the sample surface. The measurement technique has been employed to map optical whispering-gallery modes in fused silica microdisk resonators operating at near-infrared wavelengths. The method could potentially be employed for near-field imaging of a variety of systems in the near-infrared and visible spectral range.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3af51236838cf1df7ef5b01068da7a2e https://doi.org/10.1364/ol.39.001157 Zobrazit plný text záznamu