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ICOP & ICPET 2018, 24 - : 469-472 Back to browse issues page
The effect of inclined illumination on enhancing the resolution in microsphere-assisted Mirau digital holographic microscopy
Yasaman Ganjkhani *1, Vahid Abbasian1, Ehsan Ahadi Akhlaghi2, Alireza Moradi2
1- Department of Physics‎, ‎Institute for Advanced Studies in Basic Sciences (IASBS)‎, 45137-66731, Zanjan ‎, ‎Iran
2- Optics Research Center, Institute for Advanced Studies in Basic Sciences (IASBS)‎, 45137-66731, ‎Zanjan‎, ‎Iran
Abstract:   (428 Views)

According to Abbe, oblique illumination in imaging systems allows the entrance of higher spatial frequencies into the system’s aperture and thus increases the resolution power of it. We have extended the idea to Mirau digital holographic microscopy to obtain super-resolution in 3D images. High magnification Mirau objectives are expensive and low magnification ones suffer from low lateral resolution. We have already demonstrated the increase in lateral resolution through introducing a transparent microsphere into the working distance of the Mirau objective. In this paper, we show that by applying inclination to the illumination direction in Mirau system the resolution can be further improved. We have tested the technique on different samples and verified the increase in lateral resolution and edge sharpness in the presence and in the absence of the microsphere.

Keywords: digital holography, super-resolution, Mirau, 3D microscopy
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Type of Study: Research | Subject: Special
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Ganjkhani Y, Abbasian V, Ahadi Akhlaghi E, Moradi A. The effect of inclined illumination on enhancing the resolution in microsphere-assisted Mirau digital holographic microscopy. ICOP & ICPET. 2018; 24 :469-472
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انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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