Transverse resolution improvement using rotating-grating time-multiplexing approach

Abstract

The ability to improve the limited resolving power of optical imaging systems while approaching the theoretical diffraction limit has been an attractive discipline with growing interest over the last years due to its benefits in many applied optics systems. This paper presents a new approach to achieve transverse superresolution in far-field imaging systems, with direct application in both digital microscopy and digital holographic microscopy. Theoretical analysis and computer simulations show the validity of the presented approach.

Super resolution imaging using interferometric masking technique

“…Different super resolution techniques like grating based [1], fringe illumination [2,3] and interferometry based [4,5] have been mentioned in literature to achieve high resolution.…”

Nanophotonics for optical super resolution from an information theoretical perspective: a review

“…Here, both gratings are not in close contact with neither the object nor the detector and are positioned between the object and the image planes, respectively. In addition a super resolution effect may also be achieved via rotating grating (rather than moving) and digital post-processing [41]. Here, a 1-D physical grating that is placed near the input object (but not in close contact) is used to generate structured illumination onto it.…”

“…2.1, the classical encoding-decoding process is performed using diffraction gratings [9][10][11][12][13][14][30][31][32][33][34][35][36][37][38][39][40][41][42]. One way to understand how this process is produced is by analyzing the encoding stage as a shift in the object's spectrum due to the action of the grating: each diffraction order down shifts the object's spectrum at the Fourier plane.…”

Super resolution imaging achieved by using on-axis interferometry based on a Spatial Light Modulator

“…After few years of this idea, Ueda Mitsuhiro [4,5] used holography for super resolution, which was actually used for 3D imaging of data storage systems. The usage of grating in holography [6][7][8][9] to enhance the resolution remains attractive for few years and produce meaningful results. In these techniques amplitude and phase grating were used to increase the resolution.…”