AJP	ISSN : 0971 – 3093 Vol 30, Nos 8-9, Aug- Sept, 2021

Asian
Journal of Physics

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Volume 30 Nos 8-9Aug-Sept, 2021

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A Special Issue in honour
of
Prof CJR Sheppard
Guest Editors : Kehar Singh & John Sheridan

Anita Publications
FF-43, 1st Floor, Mangal Bazar, Laxmi Nagar, Delhi-110 092, India

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Asian Journal of Physics
(A Publication Not for Profit)
Volume 30, Nos 8 & 9 (2021)

CONTENTS

Guest Editorial
About the Guest Editors

Propagation of optical coherence and polarization through linear optical systems
A Yelashetty, N Gupta, D Dhirhe and G Unnikrishnan1213

Paraxial sharp-edge boundary diffraction wave theory: A review
Riccardo Borghi 1225

Optimizing sampling and padding at the pupil plane for light propagation simulations based in Fourier transforms for wavefront coding
E Acosta, E González Amador and J Arines 1235

Characterization of cellulose using nonlinear optical microscopy techniques
Nirmal Mazumder, Ishita Chakraborty, Sintu Rongpipi, Indira G, Esther W Gomez and Enrique D Gomez1243

Stable and unstable structured vortex beams, their energy flows and accompanying vortex spectra
A Volyar, E Abramochkin, E Razueva, Ya Akimova, M Bretsko and Yu Egorov 1255

Tunable focalizers as nonconventional phase filters
Cristina M Gómez-Sarabia, Ángel Sauceda-Carvajal and Jorge Ojeda-Castañeda1277

Controlling the topological charge of superposition of Bessel-Gaussian beams
Kasey R Cargill, Marisia A Fikiet, and Brooke W Kammrath 1283

Neutron waveguides: a proposal for slow neutrons confinement and applications in neutron optics
Ignacio Molina de la Peña, Maria L Calvo and Ramón F Alvarez-Estrada1289

Design considerations for multimodal optical vortex beams
J Jahns and S Supp1295

On three-dimensional polarization states of light
José J Gil, Andreas Norrman, Tero Setälä and Ari T Friberg 1307

Towards development of novel optical techniques for the mapping of polarization signal of solar corona
Athira B S, Sounak Mukherjee, Dibyendu Nandy and Nirmalya Ghosh1317

Polarization resolved nonlinear optical microscopy – A review
Naveen Kumar Balla, Spandana K U and Nirmal Mazumder 1329

Analysis of lucky imaging aided aperture synthesis
Jennifer E Ward, William T Rhodes and John T Sheridan 1339

Realizing singular beams through dual-pass phase modulation
Praveen Kumar and Naveen K Nishchal1355

Applications of multi-wavelength quantitative phase microscopy
Manoj Kumar, Osamu Matoba, Xiangyu Quan, Yasuhiro Awatsuji and Yosuke Tamada1365

Asymptotic behaviour of the Strehl ratio in the presence of Zernike polynomial aberrations
Martin J Booth and Qi Hu 1377

An eagle eye view: Three-dimensional (3D) imaging based optical encryption
Inbarasan Muniraj, Sunil Chinnadurai and John T Sheridan1387

Security-analysis of a nonlinear mask-based cryptosystem in fractional Mellin domain
Phool Singh, A K Yadav and Kehar Singh1397

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About Professor C J R Sheppard

Colin Sheppard obtained his Ph D degree in Engineering from University of Cambridge (1973). He developed an ultra-high vacuum scanning electron diffraction system, and applied it to observation of the oxidation of metal surfaces, under the supervision of Professor Sir Charles Oatley, who constructed the first scanning electron microscope. He spent two years in industry, at English Electric Valve Company, researching on negative electron affinity silicon photocathodes. He then went to Oxford, where he worked with Professor Rudi Kompfner, inventor of the traveling wave tube and former director of Bell Labs at Holmdel. He was University Lecturer in Engineering Science at the University of Oxford, and Official Fellow and Tutor in Engineering at Pembroke College. He was awarded the DSc degree in Physical Sciences from University of Oxford in 1986. In 1989, he moved to Australia, where he was Professor of Physics and Head of the Physical Optics Department at the University of Sydney. From 2003, he was Professor and Head of the Department of Bioengineering at the National University of Singapore, where he also held joint appointments in Diagnostic Radiology, Biological Sciences and the NUS Graduate School (NGS). From 2012 to 2017 he was at the Italian Institute of Technology in Genoa as Senior Scientist.
Professor Sheppard is currently Honorary Professorial Fellow at the University of Wollongong, Australia; External Collaborator and Visiting Scientist with the Italian Institute of Technology, Genoa, Italy; and Supernumerary Fellow of Pembroke College Oxford.
He has held visiting professorships at many different institutions, including UC-Berkeley, MIT, EPFL, TU-Delft, Warsaw University of Technology, University of Erlangen-Nürnberg, University of Jena, Autonomous University of Barcelona , University of Buenos Aires, University of the Philippines, University of Western Australia, and University of Queensland, as well as fellowships at Stanford University, Tokyo University, UNSW, University of Besançon, and Institut Fresnel Marseille.
He was elected Fellow of OSA, SPIE, IEE, Institute of Physics, Japan Society for Applied Physics, and the Royal Microscopical Society. He served as Vice-President of the International Commission for Optics (ICO), and as President of the International Society for Optics Within Life Sciences (OWLS). He was awarded the Italian Society for Optics and Photonics Galileo Galilei Medal, Institute of Physics Optics and Photonics Division Prize, Max Planck Bonhöffer Medal, Humboldt Research Award, ISATA Mercedes Award, National Physical Laboratory Metrology Award, Prince of Wales Award for Industrial Innovation, British Technology Group Academic Enterprise Award, and the IEE Gyr and Landis Prize.
He developed an early laser microscope (1975), patented scanning microscopy using Bessel beams (1977), published the first demonstration of scanning two-photon microscopy (by SHG) (1977), published the first paper on Bessel-Gauss beams (1978), proposed two-photon fluorescence and CARS microscopy (1978), launched the first commercial confocal microscope (1982), developed the first confocal microscope with computer control and storage (1983), proposed scanning microscopy using a detector array with pixel reassignment, now known as image scanning microscopy (1988). He has made substantial contributions in the fields of diffraction theory, beam propagation, pulse propagation, scattering and inverse scattering, 3D image formation, and polarization algebra.

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About Guest Editors

Professor Kehar Singh served as a member of the faculty at IIT Delhi since 1965 in various capacities. He was an ‘Academic Visitor’ at Imperial College of Science & Technology, London during 1969-1970, and visited / carried out research for short periods at British Scientific and Industrial Research Association Ealing, Queen’s Univ. Belfast, and National Physical Laboratory Teddington. He had been a Professor since January 1984 and during the period 1996-1999 served as Head of Physics Deptt. Prof. Singh held the position of Dean, Post Graduate Studies and Research, IIT Delhi during the period of March 2001-Aug. 2003. He served as CLUSTER Chair at the Swiss Federal Institute of Technology, Lausanne (Switzerland) in Dec.2002. Until June 30,2011 he served as an Emeritus Professor at IIT Delhi where he continued to teach and carry out research.
Since 2011, he has been an Hony. Distinguished Research Professor at ITM (now NorthCap) University, Gurgaon (Haryana) where he mentors a group of faculty members and supervises research in the areas of Information Security, Singular Optics, and Nanophotonics (Photonic band gap structures, metamaterials, and plasmonics). Prof. Singh served for a number of years as Chairman of the Research Council, IRDE (Defense Research & Development Organization) Dehradun and a member of the Cluster Advisory Council for a group of DRDO laboratories. He also served as a Member of the Research Council of National Physical Laboratory New Delhi. Since May 2015, he has been working as an Associate Editor of Optics Express, a high impact factor journal of the Optical Society of America (OSA).
Prof Kehar Singh has been an active researcher and educator and created infrastructural facilities for teaching and research in his areas of specialization: Photonics/Information Optics (Image formation and evaluation, Dynamic holography, Nonlinear photorefractives, Optical correlators, Holographic storage, Digital holography, Singular optics, and Optical cryptography). He has published extensively, having authored / co-authored nearly 350 peer reviewed research papers. Besides these there are approx. 75 review articles in books and journals, and 70 papers in conference proceedings. His research papers have been cited extensively in the literature; one of the papers having crossed the number of 1000 citations.
Research publications by Prof Singh and coworkers during the period 1965-1985 resulted in 11 Ph.D. theses. Since 1986, 20 students have completed Ph D degree under the supervision of Prof. Singh. Besides these, 75 Master of Technology and M.Sc. students have been guided in their dissertation work. He had been the backbone of the M.Tech. program in Applied Optics at IIT Delhi ever since it started in 1966. This program has produced many scientists who occupy key positions in India and abroad.
Professor Kehar Singh was honoured with Shanti Swarup Bhatnagar Award in Physical Sciences in 1985 by the CSIR, Govt. of India. He has been awarded in 2001, the Galileo Galilei Award of the International Commission on Optics. The Optical Society of India honoured him with the ‘OSI Award’. He was also given ‘Life Time Achievement Award’ at the OSI symp. held at Tezpur in Dec.2007,and Golden Jubilee ‘Distinguished Service Award’ of IIT Delhi in 2011. Prof Singh was also honored in 2011, under the Golden Jubilee ‘Honor the Mentor’ program’ of IIT Delhi.
Prof Singh is a Fellow of the Optical Society of America, SPIE (The International Society for Optical Engineering), and Indian National Academy of Engineering, in addition to being a Distinguished Fellow of the Optical Society of India and a Fellow of the Laser & Spectroscopy Society of India. He was President of the Optical Society of India from 1991 to 1994 and its Vice-President from 1988 to 1991. He also served as the President of ‘Laser and Spectroscopy Society’ of India and was President, Indian Science Congress Association (Physical Sciences Section) in 2004. Prof. Singh had been an international advisory member of the editorial board of Optical Review (Japan, 1994-2010 ), Member of the editorial boards of Optics & Lasers in Engg (Elsevier, 1999 – 2006). Currently he serves as an Associate Editor of Optics Express (2015—-todate), Computer Optics (Russia), J Optics (India, 1974 – to date), Asian J Phys (1992 – to date). and Invertis J Science and Technol (2007- ). He also served as an editorial board member of the Indian J. Pure Appl Phys (CSIR, 1986–88).
Prof. Singh has been serving as a reviewer of research papers for several journals of repute. He has given approx. 100 invited lectures in various international and national conferences/seminars/workshops and has also been associated as member of organizing/technical/steering committees of several international and national conferences/seminars/ workshops. He has visited U.K, France, Italy, Switzerland, Germany, Czechoslovakia, Canada, USA, Mexico, Japan, South Korea, Australia, Singapore, and Indonesia for delivering lectures in conferences. He was one of the Directors of the II Winter College in Optics held at ICTP, Trieste, Italy during Feb-March, 1995.
Professor Singh’s research work attracted funding for sponsored research in the field of Optics and Photonics from a number of Govt. agencies such as Department of Science and Technology, Ministry of Human Resource Development, and Defense Research and Development Organization. He has served on many committees of the Govt. of India (e.g. Environmental Impact Assessment Committee, Ministry of Environment and Forests) and has been a consultant to some industries.
As Technical chair of the International Conference on ‘Optics and Optoelectronics’ held in Dehradun, India in Dec. 1998, Prof. Singh co-edited a two volume proceedings of the conference, and SPIE volume 3729, Selected papers from International Conference on Optics and Optoelectronics’98 (Silver Jubilee Symposium of the Optical Society of India). He was Technical co-chair of the International conference on Optics and Opto-electronics held in December 2005 at Dehradun, and Co-chair Advisory Committee of the OSI confer. held in Jan.2012 at IIT Delhi. He was Technical chair of OSI’s international conference held at GJ Univ. of Science &Technol. in Hisar, during the period Nov.23-26, 2017, and Chair International Advisory Committee of Photonics-2018 held at IIT Delhi during the period Dec.12-15,2018. Prof Singh was also the Technical Chair and Chair International Advisory Committee of the International Conference on Optics and Electro-optics held at IRDE Dehradun during the period Oct.19-22,2019.
Professor Singh has edited / co-edited 2 special issues on ‘Photorefractives and their applications’ of J Optics (India), 4 issues on ‘Optical pattern recognition’ and ‘Optical information security’ of Asian J Physics, and very recently an issue of AJP dedicated to Prof FTS Yu (Vol 29, Nos 10-12,2020) and a book on ‘Perspectives in Engineering Optics’ A book brought out by IIT Delhi, containing memoirs of some of the ‘Golden Jubilee Distinguished Award’ winner retired faculty members of IIT Delhi, has also been edited by Prof. Singh.
Prof Singh has also served as a member/chair of several national committees of the MHRD, CSIR, ISRO, DRDO, DST, and INAE. Besides having served as a consultant to some industries/organizations, he has also been a consultant on security holograms to some state Govts. in India. He served as a member of the Executive Committee, National Photonics Program DRDO, and is a member of the National Advisory Council, NorthCap University Gurgaon. He served as a member of the Board of Governors of Regional Engineering. College, Kurukshetra and served on the ‘Academic advisory councils’, ‘Board of Studies’ and ‘Research degree committees’ of several universities. He also served as an invited Senate member of National Institute of Technology Agartala (Tripura).

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Prof John T Sheridan, BE (UCG/NUIG); M Sc EE (Georgia Tech); D Phil (Oxon), is an Alexander von Humboldt fellow in Erlangen-Nürnberg, and a visiting scientist at the European Commission Joint Research Centre, in Italy. He is currently Professor of Optical Engineering in the School of Electrical and Electronic Engineering, UCD in Ireland. He is the VP for research in eth College of Engineering and Arhitecture and is director of UCDs’ Masters in Optical Engineering. He is a fellow of SPIE, OSA and the IMA, Co-editor of Linear Canonical Transforms in the Springer Series on Optical Sciences and Co-author of the monograph Optical Encryption and Decryption (SPIE Press). He has published over 450 papers and chairs several international conferences. In 2018, he was lead editor on the Applied Optics Feature Issue: Optics in Ireland. He is currently actively engaged in collaborative projects with national and international academic and industrial partners.
He co-founded Generic Light in 2006 and is a founding director of the UCD spin-out company Equilume Ltd, (www.equilume.com), whose bio-optimised lighting products are used to enhance horse breeding in Australia, Ireland, Japan New Zealand, South Africa and the USA. In 2017 he co-founded BRS Optical Consultants.
Recently Prof John Sheridan has joined as Member of Editorial board of AJP.
Keywords: Optical engineering; optical signal processing; optical materials, systems and devices
https://www.researchgate.net/profile/John_Sheridan2
https://scholar.google.com/citations?hl=en&user=nuG4vA0AAAAJ&view_op=list_works&sortby=pubdate.