Complex interferometry potential in case of sufficiently stable diagnostic system

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F16%3A00242318" target="_blank" >RIV/68407700:21340/16:00242318 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/1748-0221/11/06/C06002" target="_blank" >http://dx.doi.org/10.1088/1748-0221/11/06/C06002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-0221/11/06/C06002" target="_blank" >10.1088/1748-0221/11/06/C06002</a>

Result language

angličtina

Original language name

Complex interferometry potential in case of sufficiently stable diagnostic system

Original language description

Classical interferometry is one of the key methods among active optical diagnostics. Its more advanced version, which allows recording and subsequent reconstruction of up to three sets of data using just one data object - a complex interferogram - was developed in the past and became known as complex interferometry. Employing this diagnostics, not only the usual phase shift, but also the amplitude of the probing beam as well as the fringe contrast (leading directly to the phase shift time derivative) can be reconstructed simultaneously from such a complex interferogram. In this paper it will be demonstrated that even in the case of a not particularly good diagnostic beam quality these three quantities can be reconstructed with a high degree of accuracy provided both the diagnostic beam as well as the corresponding optical line feature a reasonable stability. Such stability requirement is important as in an ideal case four shots need to be gradually recorded (one by one): the signal complex interferogram, the reference interferogram as well as the intensity structures of the signal and reference part of the diagnostic beam. Two examples of complex interferograms obtained in experiments will be analyzed: the laser produced plasma (spark in the air) and the high pressure gas jet. A general ray-tracing based iterative algorithm will be outlined in order to increase a precision of the index of refraction spacial profile taking into account refraction effects (omitted in the Abel inversion) and employing the original reconstructed phase shift and amplitude.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

<a href="/en/project/LD14089" target="_blank" >LD14089: Developing the Physics for Inertial Confinement Fusion at the time of NIF ignition</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Instrumentation

ISSN

1748-0221

e-ISSN

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Volume of the periodical

11

Issue of the periodical within the volume

6

Country of publishing house

IT - ITALY

Number of pages

12

Pages from-to

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UT code for WoS article

000379239700002

EID of the result in the Scopus database

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