“School of Nano-Sciences”

Back to Papers Home
Back to Papers of School of Nano-Sciences

Paper   IPM / Nano-Sciences / 15209
School of Nano Science
  Title:   Super-resolved microsphere-assisted Mirau digital holography by oblique illumination
1.  Vahid Abbasian
2.  Yasaman Ganjkhani
3.  Ehsan A Akhlaghi
4.  Arun Anand
5.  Bahram Javidi
6.  Ali-Reza Moradi
  Status:   Published
  Journal: J. Optics
  No.:  6
  Vol.:  20
  Year:  2018
  Publisher(s):   IOP Publishing Ltd
  Supported by:  IPM
In this paper, oblique illumination is used to improve the lateral resolution and edge sharpness in microsphere-assisted Mirau digital holographic microscopy (Mirau-DHM). E. Abbe showed that tilting the illumination light allows entrance of higher spatial frequencies into the imaging system thus increasing the resolution power. We extended the idea to common-path DHM, based on Mirau objective, toward super-resolved 3D imaging. High magnification Mirau objectives are very expensive and low magnification ones suffer from low resolution, therefore, any attempt to increase the effective resolution of the system may be of a great interest. We have already demonstrated the effective resolution increasing of a Mirau-DHM system by incorporating a transparent microsphere within the working distance of the objective. Here, we show that by integrating a microsphere-assisted Mirau-DHM with the oblique illumination even higher resolutions can be achieved. We have applied the technique for various samples and have shown the increase in the lateral resolution for the both cases of Mirau-DHM with and without the microsphere.

Download TeX format
back to top
scroll left or right