Multi-pass probing for high-sensitivity tomographic interferometry

Abstract Optical probing is an indispensable tool in research and development. In fact, it has always been the most natural way for humankind to explore nature. However, objects consisting of transparent materials with a refractive index close to unity, such as low-density gas jets, are a typical ex...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Stefan Karatodorov, Roberto Lera, Marek Raclavsky, Sebastian Lorenz, Uddhab Chaulagain, Jaroslav Nejdl
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fb029291d8ef4a7590c3373541475637
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:fb029291d8ef4a7590c3373541475637
record_format	dspace
spelling	oai:doaj.org-article:fb029291d8ef4a7590c33735414756372021-12-02T16:17:18ZMulti-pass probing for high-sensitivity tomographic interferometry10.1038/s41598-021-94436-62045-2322https://doaj.org/article/fb029291d8ef4a7590c33735414756372021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94436-6https://doaj.org/toc/2045-2322Abstract Optical probing is an indispensable tool in research and development. In fact, it has always been the most natural way for humankind to explore nature. However, objects consisting of transparent materials with a refractive index close to unity, such as low-density gas jets, are a typical example of samples that often reach the sensitivity limits of optical probing techniques. We introduce an advanced optical probing method employing multiple passes of the probe through the object to increase phase sensitivity, and relay-imaging of the object between individual passes to preserve spatial resolution. An interferometer with four-passes was set up and the concept was validated by tomographic characterization of low-density supersonic gas jets. The results show an evident increase of sensitivity, which allows for the accurate quantitation of fine features such as a shock formed by an obstacle or a barrel shock on the jet boundary in low ambient gas pressures. Despite its limitations in temporal resolution, this novel method has demonstrated an increase in phase sensitivity in transmission, however, it can also be employed to boost the absorption or polarization contrast of weakly interacting objects in both transmission and reflection setups, thus, upgrading the sensitivity of various optical characterization methods.Stefan KaratodorovRoberto LeraMarek RaclavskySebastian LorenzUddhab ChaulagainJaroslav NejdlNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Stefan Karatodorov Roberto Lera Marek Raclavsky Sebastian Lorenz Uddhab Chaulagain Jaroslav Nejdl Multi-pass probing for high-sensitivity tomographic interferometry
description	Abstract Optical probing is an indispensable tool in research and development. In fact, it has always been the most natural way for humankind to explore nature. However, objects consisting of transparent materials with a refractive index close to unity, such as low-density gas jets, are a typical example of samples that often reach the sensitivity limits of optical probing techniques. We introduce an advanced optical probing method employing multiple passes of the probe through the object to increase phase sensitivity, and relay-imaging of the object between individual passes to preserve spatial resolution. An interferometer with four-passes was set up and the concept was validated by tomographic characterization of low-density supersonic gas jets. The results show an evident increase of sensitivity, which allows for the accurate quantitation of fine features such as a shock formed by an obstacle or a barrel shock on the jet boundary in low ambient gas pressures. Despite its limitations in temporal resolution, this novel method has demonstrated an increase in phase sensitivity in transmission, however, it can also be employed to boost the absorption or polarization contrast of weakly interacting objects in both transmission and reflection setups, thus, upgrading the sensitivity of various optical characterization methods.
format	article
author	Stefan Karatodorov Roberto Lera Marek Raclavsky Sebastian Lorenz Uddhab Chaulagain Jaroslav Nejdl
author_facet	Stefan Karatodorov Roberto Lera Marek Raclavsky Sebastian Lorenz Uddhab Chaulagain Jaroslav Nejdl
author_sort	Stefan Karatodorov
title	Multi-pass probing for high-sensitivity tomographic interferometry
title_short	Multi-pass probing for high-sensitivity tomographic interferometry
title_full	Multi-pass probing for high-sensitivity tomographic interferometry
title_fullStr	Multi-pass probing for high-sensitivity tomographic interferometry
title_full_unstemmed	Multi-pass probing for high-sensitivity tomographic interferometry
title_sort	multi-pass probing for high-sensitivity tomographic interferometry
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fb029291d8ef4a7590c3373541475637
work_keys_str_mv	AT stefankaratodorov multipassprobingforhighsensitivitytomographicinterferometry AT robertolera multipassprobingforhighsensitivitytomographicinterferometry AT marekraclavsky multipassprobingforhighsensitivitytomographicinterferometry AT sebastianlorenz multipassprobingforhighsensitivitytomographicinterferometry AT uddhabchaulagain multipassprobingforhighsensitivitytomographicinterferometry AT jaroslavnejdl multipassprobingforhighsensitivitytomographicinterferometry
_version_	1718384269632471040

Multi-pass probing for high-sensitivity tomographic interferometry

Ejemplares similares