Dual-wavelength off-axis digital holography using a single light-emitting diode

C. H.O. Janghyun, L. I.M. Jinsang, Sungbin Jeon, Guk Jong Choi, Hyungbae Moon, No Cheol Park, Young Pil Park

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We propose a new low-coherence interferometry system for dual-wavelength off-axis digital holography. By utilizing diffraction gratings, two beams with narrower bandwidths and different center wavelengths could be filtered in a single light-emitting diode. The characteristics of the system are analytically determined to extend the coherence length and field-of-view enough for off-axis configuration. The proposed system enables the fast and accurate measurement of the surface profile with more than a micrometer step height and less noise. The performance of the system is verified by the experimental results of a standard height sample.

Original languageEnglish
Pages (from-to)2123-2131
Number of pages9
JournalOptics Express
Volume26
Issue number2
DOIs
Publication statusPublished - 2018 Jan 22

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holography
light emitting diodes
gratings (spectra)
wavelengths
field of view
micrometers
interferometry
bandwidth
profiles
configurations

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Janghyun, C. H. O., Jinsang, L. I. M., Jeon, S., Choi, G. J., Moon, H., Park, N. C., & Park, Y. P. (2018). Dual-wavelength off-axis digital holography using a single light-emitting diode. Optics Express, 26(2), 2123-2131. https://doi.org/10.1364/OE.26.002123
Janghyun, C. H.O. ; Jinsang, L. I.M. ; Jeon, Sungbin ; Choi, Guk Jong ; Moon, Hyungbae ; Park, No Cheol ; Park, Young Pil. / Dual-wavelength off-axis digital holography using a single light-emitting diode. In: Optics Express. 2018 ; Vol. 26, No. 2. pp. 2123-2131.
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Janghyun, CHO, Jinsang, LIM, Jeon, S, Choi, GJ, Moon, H, Park, NC & Park, YP 2018, 'Dual-wavelength off-axis digital holography using a single light-emitting diode', Optics Express, vol. 26, no. 2, pp. 2123-2131. https://doi.org/10.1364/OE.26.002123

Dual-wavelength off-axis digital holography using a single light-emitting diode. / Janghyun, C. H.O.; Jinsang, L. I.M.; Jeon, Sungbin; Choi, Guk Jong; Moon, Hyungbae; Park, No Cheol; Park, Young Pil.

In: Optics Express, Vol. 26, No. 2, 22.01.2018, p. 2123-2131.

Research output: Contribution to journalArticle

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