Highly stable digital holography for temperature measurement

Manoj Kumar, Osamu Matoba, Yasuhiro Awatsuji

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations


We have developed a common-path configuration of digital holography offering several advantages in comparison to two-channel configurations of digital holography. This system shows a very high temporal phase stability which makes it more appropriate for real-time and fast transient dynamic measurement applications, the configuration is very simple and the system is very compact in size, and it is less vibration sensitive. Moreover, with the full use of the reference beam, the proposed system provides the field of view (FOV) as wide as that of a two-beam interferometer. The proposed system is used for the measurement of the refractive index and temperature inside the candle flame. A complete analysis of the temperature measurement from the recorded digital hologram in the presence of a candle flame is demonstrated. The advantages and limitations of the systems are also discussed.

Original languageEnglish
Title of host publicationHolography
Subtitle of host publicationAdvances and Modern Trends VII
EditorsAntonio Fimia, Miroslav Hrabovsky, John T. Sheridan
ISBN (Electronic)9781510643826
StatePublished - 1 Jan 2021
Externally publishedYes
EventHolography: Advances and Modern Trends VII 2021 - Virtual, Online, Czech Republic
Duration: 19 Apr 202123 Apr 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceHolography: Advances and Modern Trends VII 2021
Country/TerritoryCzech Republic
CityVirtual, Online


  • Common-path configuration
  • Digital holography
  • Flames
  • Phase measurement
  • Refractive index measurement
  • Temperature measurement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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