Detail publikačního výsledku

Numerical refocusing in digital holographic microscopy with extended-sources illumination

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

Originální název

Numerical refocusing in digital holographic microscopy with extended-sources illumination

Anglický název

Numerical refocusing in digital holographic microscopy with extended-sources illumination

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2014

Vydáno

18.11.2013

ISSN

1094-4087

Periodikum

OPTICS EXPRESS

Svazek

21

Číslo

23

Stát

Spojené státy americké

Strany od

28258

Strany do

28271

Strany počet

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"
}