High-resolution long-working-distance reference-free holographic microscopy exploiting speckle-correlation scattering matrix
arXiv:1802.10321 · doi:10.1103/PhysRevApplied.10.024053
Abstract
Using conventional refraction-based optical lens, it is challenging to achieve both high-resolution imaging and long-working-distance condition. To increase the numerical aperture of a lens, the working distance should be compensated, and vice versa. Here we propose and demonstrate a new concept in optical microscopy that can achieve both high-resolution imaging and long-working-distance conditions by utilising a scattering layer instead of refractive optics. When light passes through a scattering layer, it creates a unique interference pattern. To retrieve the complex amplitude image from the interference pattern without introducing a reference beam, we utilised a speckle-correlation scattering matrix method. This property enables holographic microscopy without any lens or external reference beam. Importantly, the proposed method allows high-resolution imaging with a long working distance beyond what a conventional objective lens can achieve. As an experimental verification, we imaged various microscopic samples and compared their performance with off-axis digital holographic microscopy.
References in corpus (15)
- Measuring the Transmission Matrix in Optics : An Approach to the Study and Control of Light Propagation in Disordered Media
- Wide-field, high-resolution Fourier ptychographic microscopy
- Non-invasive real-time imaging through scattering layers and around corners via speckle correlations
- Exploiting disorder for perfect focusing
- Image Transmission Through an Opaque Material
- Scattering Lens Resolves sub-100 nm Structures with Visible Light
- Complex wavefront engineering with disorder-engineered metasurfaces
- Recent advances in wavefront shaping techniques for biomedical applications
- Translation correlations in anisotropically scattering media
- Reference-less measurement of the transmission matrix of a highly scattering material using a DMD and phase retrieval techniques
- Measuring optical transmission matrices by wavefront shaping
- Correlation-enhanced control of wave focusing in disordered media
- Transmission-matrix-based point-spread-function engineering through a complex medium
- Reference-Free Single-Point Holographic Imaging and Realization of an Optical Bidirectional Transducer
- Holographic imaging through a scattering medium by diffuser-aided statistical averaging