Please use this identifier to cite or link to this item:
Title: Long working distance high resolution reflective sample imaging via structured embedded speckle illumination
Authors: Haridas, Aswin
Perinchery, Sandeep Menon
Shinde, Anant
Buchnev, Oleksandr
Murukeshan, Vadakke Matham
Keywords: Engineering::Mechanical engineering
Issue Date: 2020
Source: Haridas, A., Perinchery, S. M., Shinde, A., Buchnev, O., & Murukeshan, V. M. (2020). Long working distance high resolution reflective sample imaging via structured embedded speckle illumination. Optics and Lasers in Engineering, 134, 106296-. doi:10.1016/j.optlaseng.2020.106296
Journal: Optics and Lasers in Engineering
Abstract: Imaging beyond the diffraction limit at longer working distances using enhanced microscopic configurations has always been a challenge for biological and engineering samples. Even though multiple techniques have been widely used for sub-diffraction limit resolution imaging, the achievable resolution was relying on the use of objective lenses with a high numerical aperture (NA). In the case of engineering samples, in addition to sustaining higher resolutions at large working distances, improving the signal-to-noise ratio (SNR) is also critical. In this context, we propose and demonstrate a concept for high-resolution imaging at large working distances, termed as structured illumination embedded speckle microscopy. An imaging resolution of ~ 310 ± 5 nm was achieved with a microscope objective (0.55 NA; 50X) having 11 mm long working distance using a Siemen's star as the test sample. The demonstrated microscopy is therefore envisaged for engineering applications that demands high-resolution, high SNR imaging at long working distances.
ISSN: 0143-8166
DOI: 10.1016/j.optlaseng.2020.106296
Rights: © 2020 Elsevier Ltd. All rights reserved. This paper was published in Optics and Lasers in Engineering and is made available with permission of Elsevier Ltd.
Fulltext Permission: embargo_20221231
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

Files in This Item:
File Description SizeFormat 
OLE article_2020_Aswin.pdf
  Until 2022-12-31
2.11 MBAdobe PDFUnder embargo until Dec 31, 2022

Citations 50

Updated on Mar 5, 2021

Page view(s)

Updated on Jul 17, 2021


Updated on Jul 17, 2021

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.