Publication result detail

Numerical refocusing in digital holographic microscopy with extended-sources illumination

TÝC, M.; KVASNICA, L.; SLABÁ, M.; CHMELÍK, R.

Original Title

Numerical refocusing in digital holographic microscopy with extended-sources illumination

English Title

Numerical refocusing in digital holographic microscopy with extended-sources illumination

Type

WoS Article

Original Abstract

Numerical refocusing can be seen as a method of compensating the defocus aberration based on deconvolution by inverse filtering [1] in digital holographic microscopy (DHM). It is well-understood in cases when a coherent (ie point and monochromatic) light source such as a collimated laser beam is used [2]. This paper extends the theory to the case of illumination by a quasi-monochromatic extended (spatially incoherent) source. Refocusing methods for spatially incoherent illumination are derived and benefits of this type of illumination are demonstrated. We have proved both theoretically and experimentally that coherent-based refocusing gives incorrect results for extended-source illumination, while results obtained using the newly derived method are correct.

English abstract

Numerical refocusing can be seen as a method of compensating the defocus aberration based on deconvolution by inverse filtering [1] in digital holographic microscopy (DHM). It is well-understood in cases when a coherent (ie point and monochromatic) light source such as a collimated laser beam is used [2]. This paper extends the theory to the case of illumination by a quasi-monochromatic extended (spatially incoherent) source. Refocusing methods for spatially incoherent illumination are derived and benefits of this type of illumination are demonstrated. We have proved both theoretically and experimentally that coherent-based refocusing gives incorrect results for extended-source illumination, while results obtained using the newly derived method are correct.

Keywords

Digital holography, microscopy, deconvolution, partial coherence in imaging, three-dimensional microscopy

Key words in English

Digital holography, microscopy, deconvolution, partial coherence in imaging, three-dimensional microscopy

Authors

TÝC, M.; KVASNICA, L.; SLABÁ, M.; CHMELÍK, R.

RIV year

2014

Released

18.11.2013

ISBN

1094-4087

Periodical

OPTICS EXPRESS

Volume

21

Number

23

State

United States of America

Pages from

28258

Pages to

28271

Pages count

14

BibTex

@article{BUT102992,
  author="Matěj {Týč} and Lukáš {Kvasnica} and Michala {Slabá} and Radim {Chmelík}",
  title="Numerical refocusing in digital holographic microscopy with extended-sources illumination",
  journal="OPTICS EXPRESS",
  year="2013",
  volume="21",
  number="23",
  pages="28258--28271",
  doi="10.1364/OE.21.028258",
  issn="1094-4087"
}