Schedule

A novel measurement setup based on Digital Holography Microscopy in reflection and Total internal reflection mode is developed for quantitative assessment of plasma damage of fused silica opticsAuthors: Dakshin Tillo, Indian Institute of Space Science and Technology / Jagroop Bhanwala, Vikram Sarabhai Space Center / C S Narayanamurthy, Indian Institute of Space Science and Technology / D Sam Dayala Dev, Vikram Sarabhai Space Center

Dispersed fringe sensing (DFS) is a promising co-phasing approach for a segmented telescope. We proposed a novel piston error extraction method based on principal component analysis (PCA) technology and demonstrated its performance with simulations.Authors: Yongfeng Zhang, Institute of Optics and Electronics, CAS / Hao Xian, Institute of Optics and Electronics, CAS / Changhui Rao, Institute of Optics and Electronics, CAS

This work reports sensing of heavy metal ions: arsenic (As), cadmium (Cd) and lead (Pb) by employing gold nanoparticles modified copper (Cu) electrodes.Authors: NIKHIL DAIMARI, TEZPUR UNIVERSITY / Upama Das, TEZPUR UNIVERSITY / Rajib Biswas, TEZPUR UNIVERSITY

We report the successful fabrication, through soft lithography, of chitosan bioplastic diffraction gratings from crab shell waste and blended with starch and glycerol. Diffraction experiments confirm the fidelity of the replication process.Authors: Efren Gumayan, Iloilo Science and Technology University / Ian Ken Dimzon, Ateneo de Manila / Joel Maquiling, Ateneo de Manila University / Rayno Vic Janayon, Mindanao State University / Caironesa Dulpina, Mindanao State University / Raphael Guerrero, Ateneo de Manila University

In this article, we present an approach that utilizes a quadratic optimization procedure enabling nanoscale surface profile measurement. The effectiveness of this method is demonstrated through experimentally obtained noisy interferograms.Authors: SUBRAHMANYA N, Indian Institute of Technology Kanpur / Allaparthi Vithin, Indian Institute of Technology Kanpur / Rajshekhar Gannavarpu, Indian Institute of Technology Kanpur

Recently, we have proposed an alternative method to characterize the polarization state of three-dimensional fields. Here, we show the interest of this new methodology in the analysis of radially polarized beams with a topological charge.Authors: Rosario Martínez-Herrero, Universidad Complutense de Madrid / David Maluenda, Universitat de Barcelona / Marcos Pérez-Aviñoa, Universitat de Barcelona / Artur Carnicer, Universitat de Barcelona / Ignasi Juvells, Universitat de Barcelona / Ángel Sanz, Universidad Complutense de Madrid

A dynamic null-screen test consists of rotating the surface under test and designing a new null-screen for each position, this allows an evaluation of a complete freeform surface with varying concavity and convexity.Authors: Dulce Gonzalez-Utrera, ICAT-UNAM / Rufino Díaz-Uribe, ICAT-UNAM / Manuel Campos-García, ICAT-UNAM / Brenda Villalobos-Mendoza, UDEM / Daniel Aguirre, ICAT-UNAM

Starch-based elastomers were engraved with microchannels using a CO2 laser. These environmentally friendly and biocompatible starch films show potential as an alternative material for microfluidic chips.<quillbot-extension-portal></quillbot-extension-portal>Authors: Pooja N, Manipal School of Life Sciences / Nafisa Ahmed, Manipal School of Life Sciences / Neha Santhosh, Manipal School of Life Sciences / Nirmal Mazumder, Manipal School of Life Sciences

We present a field-domain boundary condition (FDBC), which involves directly manipulating the field within the boundary layer and compare it to other boundary conditions. The advantage of the FDBC is its relative simplicity of implementation.Authors: pratiksha choudhary, IIT DELHI

With the Jacquinot Stop, Fourier transform infrared spectrometers suffer from a conflict between optical throughput and spectral resolution. This work effectively eliminated the spectral broadening induced by larger stop diameter through deep learning-based numerical recovery.Authors: Zichun Yang, Nanjing Univ. Aeronaut. & Astronaut. / Linwei Shang, Nanjing Univ. Aeronaut. & Astronaut. / Jinjin Wu, Nanjing Univ. Aeronaut. & Astronaut. / Jianhua Yin, Nanjing Univ. Aeronaut. & Astronaut. / Huijie Wang, Nanjing Univ. Aeronaut. & Astronaut.

We propose and demonstrate a method for characterizing the shape of optically levitated nanoparticles using their scattering light patterns. By incorporating the absolute scattering power, a complete structural representation can be achieved.Authors: Cuihong Li, Zhejiang Lab / Yuanyuan Ma, Nanjing University / Chaoxiong He, Zhejiang Lab / Jinchuan Wang, Zhejiang Lab / Ying Dong, Zhejiang Lab / Huizhu Hu, Zhejiang Lab

We demonstrate that, by plasma reshaping using a pair of orthogonally oriented cylindrical lenses to focus the laser beam, a 5-times enhancement of THz pulse energy detected from laser-ionized water lines can be achieved.Authors: Yuxuan Chen, Tianjin University / Yuhang He, Tianjin University / Zhen Tian, Tianjin University / Jianming Dai, Tianjin University

The evolution of the OAM speckle fields from the Fresnel to Fraunhofer region has been studied for the classification of OAM beams using 1D-CNN.Authors: Purnesh Badavath, NIT-Warangal / Manas Pandit, NIT-Warangal / Vijay Kumar, NIT-Warangal

We demonstrate experimentally and theoretically enhanced third-order absorptive and refractive nonlinear optical response in VS2/Black phosphorus (BP) nanohybrids in the strongly coupled regime due to charge transfer, making them potentially valuable for optical limiting applications.Authors: Vinod Kumar, IISER Bhopal / Chandra S. Rout, JAIN UNIVERSITY / K. V. Adarsh, IISER Bhopal

Complex angle theory can offer new fundamental insights into refraction at the absorptive interface. In this work we propose a new method to induce isofrequency opening via addition of scattering in the dual interface system.Authors: Roman Shugayev, National Energy Technology Laboratory / Matt Eichenfield, Sandia National Laboratories

A 1.2 GHz, 106 fs stretched-pulse mode-locked laser was demonstrated, with > 700 mW output power. To the best of our knowledge, this is the highest repetition rate from NPE mode locked Yb: fiber lasers.Authors: ya wang, Beijing University of Posts and Telecomm / Ruoao Yang, Peking University / zhendong chen, Peking University / Duo Pan, Peking University / Bin Luo, Beijing University of Posts and Telecomm / Zhigang Zhang, Peking University / Jingbiao Chen, Peking University

The results obtained for Fresnel coefficients (FCs) corresponding to a magnetic achiral/chiral (ACC) and chiral/achiral (CAC) interfaces are extended to examine the chiral magnetic slab and spectral response.Authors: Nagi Buaossa, University of Dayton / Monish Chatterjee, University of Dayton / Rajab Ataai, University of Dayton / Elforjani Jera, University of Dayton

The multiscale laser-induced periodic surface structures comprising of mutually perpendicular low-spatial frequency structures of various nature both modulated with high-spatial frequency structures are observed on a substrate-supported Ni nanofilm upon irradiation with linear-polarized infrared femtosecond laser pulses.Authors: Sergey Romashevskiy, Joint Institute for High Temperatures / Andrey Burmistrov, Joint Institute for High Temperatures / Stanislav Evlashin, Skolkovo Institute of Science and Technology

We demonstrate coherent terahertz (THz) generation from ITO film via four-wave mixing (FWM). Such a THz wave generation process can be attributed to the fast intra-band nonlinearity in the conduction band (CB).Authors: Yuhang He, Tianjin University / Yuxuan Chen, Tianjin University / Jiapeng Zhao, University of Rochester / zhen tian, Tianjin University / Jianming Dai, Tianjin University

We experimentally demonstrate an ultracompact and universal mode-order converting model for the TEp-to-TEqmode conversion by using subwavelength grating metamaterials, with measured bandwidths of 24-100 nm for three proof-of-concept converters.Authors: Zhenzhao Guo, Southeast University / Yaxin Yu, Southeast University / Shengbao Wu, Hebei university / Jinbiao Xiao, Southeast University

A refractive index optical fiber sensor is presented. It consists of an air gap inside the fiber, structuring a Mach-Zehnder interferometer with high-order propagating modes sensitive to the surrounding. Sensitivities around 226.8 nm/RIU were obtained.Authors: Guillermo Salceda-Delgado, Universidad Autónoma de Nuevo León / Alejandro Martinez-Rios, Centro de Investigaciones en Optica / Teresa Elena Porras-Culebro, Centro de Investigaciones en Optica / Ismael Torres-Gomez, Centro de Investigaciones en Optica / Gilberto Anzueto-Sanchez, Centro de Investigaciones en Optica

The optical vector-eigenmode (VE) decomposition for few-mode fibers (FMFs)-based links was carried out through the residual network (ResNet) method. A 10-mode decomposition with the average correlation coefficient up to 0.978 was achieved after fully training.Authors: JianJun Li, University of Electronic Science and Technology of China / Rui Zhang, University of Electronic Science and Technology of China / Feng Yang, Marolabs Co. Ltd. / Feng Wen, University of Electronic Science and Technology of China

We proposed and demonstrated a blind source separation method utilizing deep learning-based pointcloud analysis algorithms. By treating the signals as point clouds and utilizing their statistical information, signal of interest can be recovered.Authors: Taichu Shi, Rowan University / James Garofolo, Rowan University / Yang Qi, Rowan University / Ben Wu, Rowan University

We propose a multimode EDFA for the amplification of orbital angular momentum modes based on circular photonic crystal fiber. The proposed MM-EDFA has a gain larger than 21 dB, DMG less than 0.15 dB, and gain excursion less than 1.2 dB for all the 22 signal OAM modes across C-Band.Authors: Ishani De, Indian Institute of Technology Roorkee / Ankita Gaur, Institute for Plasma Research / Vipul Rastogi, Indian Institute of Technology Roorkee

We present DFT simulation for effect of vacancy in PZT phonon mode softening leading to ≈90% and 99% reduction in Pockels coefficient with 50pm/V and 2pm/V peak value for Oxygen and Lead vacancy respectively.Authors: Suraj Singh, Indian Institute of Science Bangalore / Shankar Kumar Selvaraja, Indian Institute of Science Bangalore

Aiming the reshaping of a pre-chirped Gaussian pulse towards the triangular shape, a silicon core fiber is designed and optimized. Stable Triangular pulse is generated at sufficiently shorter optimum length compared to previously reported works.<quillbot-extension-portal></quillbot-extension-portal>Authors: Atrayee Mishra, IIEST, Shibpur ( Formerly BESU ) / Binoy Ghosh, IIEST, Shibpur ( Formerly BESU ) / Dipankar Ghosh, MCKV Institute of Engineering / Mousumi Basu, IIEST, Shibpur ( Formerly BESU )

Abstract: The current study reports the application of LED-induced autofluorescence (LED-IAF), a label-free technique, in assessing protein structures. The study showed variable autofluorescence spectra of proteins with structural variations, demonstrating the feasibility of LED-IAF in protein structure identification.Authors: Shaik Basha, Manipal School of Life Sciences, Manipal Academy of Higher Education / Darshan Mukunda, Manipal School of Life Sciences, Manipal Academy of Higher Education / Jackson Rodrigues, Manipal School of Life Sciences, Manipal Academy of Higher Education / Subhash Chandra, Manipal School of Life Sciences, Manipal Academy of Higher Education / Ameera K, Manipal School of Life Sciences, Manipal Academy of Higher Education / Krishna Mahato, Manipal School of Life Sciences, Manipal Academy of Higher Education

Millets are a set of small grains that belongs to the Poaceae family. The present study employs microscopy and spectroscopy tools to analyze the physicochemical caharacteristics of strach extracted from Indian millets.Authors: BAISHALI DAS, Manipal School of Life Sciences / Nirmal Mazumder, Manipal School of Life Sciences / Ishita Chakraborty, Manipal School of Life Sciences

Proposed SSIM-Edge-CNN-U2Net model improves loss function and adopts two-stage residual learning, achieving higher quality of restored natural scene images from speckles through multimode fiber.Authors: Le Yang, Beijing University of Posts and Telecommunications / Yangyang Xiang, Beijing University of Posts and Telecommunications / Jiali Yang, Beijing University of Posts and Telecommunications / Junhui Li, Beijing University of Posts and Telecommunications / Mingying Lan, Beijing University of Posts and Telecommunications / Li Gao, Beijing University of Posts and Telecommunications

Novel biodegradable elastomers based on potato starch are synthesized and utilized as cell substrates. The elastomers were characterized in terms of their functional properties. To assess the suitability of the synthesized elastomers for biomedical applications, studies on cell adhesion and cell viability were carried out.Authors: Nafisa Ahmed, Manipal School of Life Sciences, Manipal / Pooja N, Manipal School of Life Sciences, Manipal / Sib Sankar Mal, National Institute of Technology Karnataka / Nirmal Mazumder, Manipal School of Life Sciences, Manipal

The chlorophyll degradation was studied on the dorsal and ventral surfaces of leaves of ornamental plants (Bougainvillea sp., Ixora coccinea, Allamanda sp., and Jasminum sambac) in the span of six days using a UV-Vis spectrograph.Authors: Rhea Basak, Manipal School of Life Sciences / MANIKANTH KARNATI, Manipal School of Life Sciences / ADITI NAIK, Manipal School of Life Sciences / Gagan Raju, Manipal School of Life Sciences / Sharmila SN, Manipal School of Life Sciences / Nirmal Mazumder, Manipal School of Life Sciences

Photopigments are essential components of plant leaves that affects plant survivability. Different photopigments help in absorption and emission of light from the environment. Optical spectroscopic techniques measures the intensity at which different photopigments are observed.Authors: Divyani Chatterjee, MAHE / Manikanth Karnati, MAHE / Gagan Raju, MAHE / Nirmal Mazumder, MAHE

Photopigment degradation in the leaf directly impacts the quality of the leaf over time during storage. The present study employs time dependant Uv- vis spectroscopic analysis for analysis of the nature of the leaf during storage.Authors: MANIKANTH KARNATI, MANIPAL ACADEMY OF HIGHER EDUCATION / ADITI NAIK, MANIPAL ACADEMY OF HIGHER EDUCATION / Gagan Raju, MANIPAL ACADEMY OF HIGHER EDUCATION / Sharmila SN, MANIPAL ACADEMY OF HIGHER EDUCATION / Nirmal Mazumder, MANIPAL ACADEMY OF HIGHER EDUCATION

Potato starches were subjected to non-thermal atmospheric pressure plasma with the dosage of a voltage of 1 KV and 30 mA of current for 5 min. Physio-chemical examination was carried out for the morphological characterization of native and plasma treated starchAuthors: Anusha Das, Manipal Academy of Higher Education / BAISHALI DAS, Manipal Academy of Higher Education / Ngangom Aomoa, Institute for Plasma Research / Rakesh Moulick, Institute for Plasma Research / Nirmal Mazumder, Manipal Academy of Higher Education

The present work employs spectroscopy and machine learning-based PCA to investigate fluctuations in chlorophyll concentration in Codiaeum variegatum transform from a healthy condition to a dry state, which can provide valuable insights into plant physiology.Authors: ADITI NAIK, MANIPAL ACADEMY OF HIGHER EDUCATION / MANIKANTH KARNATI, MANIPAL ACADEMY OF HIGHER EDUCATION / Gagan Raju, MANIPAL ACADEMY OF HIGHER EDUCATION / Sharmila SN, MANIPAL ACADEMY OF HIGHER EDUCATION / RAMYA S, MANIPAL ACADEMY OF HIGHER EDUCATION / Nirmal Mazumder, MANIPAL ACADEMY OF HIGHER EDUCATION

The deterioration of edible oils in the presence of oxygen makes it unfit for consumption and can pose severe health hazards to mankind. The present-day employs the use of spectroscopy to investigate the effect of edible oils along with machine learning techniques such as PCA.Authors: Huzail Shaikh, Manipal School of Life Sciences / Kausalya Makkithaya, Manipal School of Life Sciences / Nirmal Mazumder, Manipal School of Life Sciences

Smartphone-based imaging devices have been shown to be an alternative to the high-end microscope. The present study deals with the possible use and study of different samples including histopathological samples.Authors: Yasho vardhan, Manipal Institute of Technology / Shree hasta, Manipal GOK-Bio incubator / Gagan Raju, Manipal School of Life Sciences, Manipal Academy of Higher Education / Vishwanath Managuli, Manipal Institute of Technology / Nirmal Mazumder, Manipal School of Life Sciences, Manipal Academy of Higher Education

Rice is the primary source of nutrition and good source of complex carbohydrates. This study employs microscopy and spectroscopy analysis to determine the physicochemical characteristics of rice starch extracted from Karnataka and Assam.Authors: Anusha Das, Manipal School of Life Sciences / Indira Govindaraju, Manipal School of Life Sciences / Nirmal Mazumder, Manipal School of Life Sciences

The current work aims to investigate the effects of a 980-nm NIR-laser on the motility of human spermatozoa in an in-vitro controlled trial, with an 80% increase in motility after 3 minutes of laser irradiationAuthors: Rasha Ahmed, Al Azhar University / Omnia Abd El-Rahman Nematallah, Cairo University / Shaimaa Elattar, Al Azhar University

The quantitative analysis of phase images enables to measure various properties of the biological tissue sample. The Digital Holographic method is a powerful tool to perform quantitative analysis of images. This work demonstrates the capture of digital holograms of breast tissues and the subsequent reconstruction of both amplitude and phase images.Authors: Leena Thomas, APJ Abdul Kalam Technological University

This study proposes a new noncontact optical imaging technique based on biospeckle photography and multivariate analysis to estimate the cytotoxic effect of photodynamic therapy-mediated phthalocyanine-gold nanoconjugates by monitoring the physiological changes of normal tissue. © 2023 The Author(s)Authors: Doaa Youssef, Cairo University / Shaimaa Alexeree, Cairo University / Mohamed Abdel Harith, Cairo University

We introduce a novel color QR code system for advanced encryption, leveraging spatial data, optimized on AWS. Outperforms conventional systems in speed and cost. Future applications in secure healthcare data storage and quantum color exploration.Authors: Sara Ignacio Cerrato, Faculty of Optics and Optometry, Universidad Complutense de Madrid / David Pacios, Faculty of Informatics, Universidad Complutense de Madrid / José Miguel Ezquerro Rodríguez, Faculty of Optics and Optometry, Universidad Complutense de Madrid / José Luis Vázquez-Poletti, Faculty of Informatics, Universidad Complutense de Madrid / Nikolaos Schetakis, Quantum Innovation Pc / Konstantinos Stavrakakis, ALMA Sistemi Srl / Alessio Di Iorio, ALMA Sistemi Srl / María Estefanía Avilés Mariño, Universidad de Diseño, Innovación y Tecnología

We use the Relativistic Random Phase Approximation to calculate Wigner delays for the noble gases and their halide counterparts. Our analysis is the first to report on the relative shift in delays between each pairing.Authors: Brock Grafstrom, The Ohio State University / Alexandra Landsman, The Ohio State University

Using a Classical Trajectory Monte Carlo Simulation and a unique setup with a planewave beam perpendicular to a Laguerre-Gaussian beam, the strong field approximation is used to determine the angular momentum of the vortex beam.Authors: Harrison Pasquinilli, Ohio State University / Alex Schimmoller, Ohio State University / Alexandra Landsman, Ohio State University

Multilayer extension of the Trojan-like wave packets on the Langmuir Type-(1)-like ``Bulb Wire" Helium configurations is discovered with the electrons synchronously hopping between the vertices of regular polygons in parallel planes.Authors: Matt Kalinski, Utah State University

Given the increased plastic usage and waste generation, measures are being taken to recycle and reuse the plastic. Present study helps us to analyse the chemical composition of these recycled plastics and identify them using Raman spectrograph.Authors: Haya Fathima, Manipal School of LIfe Sciences / Ishita Chakraborty, Manipal School of LIfe Sciences / Soumyabrata Banik, Manipal School of LIfe Sciences / Sudeeksha H C, HORIBA India specific / John Anthony, HORIBA India specific / Nirmal Mazumder, Manipal School of LIfe Sciences

Small signal frequency response of a silicon nanocrystal-based slotted photonic crystal Raman laser has been evaluated theoretically by solving the coupled mode equations for a laser in steady state. Modulation bandwidth of the order of ~ 144 GHz has been achieved in this type of laser due to the high Raman gain coefficient of silicon nanocrystals.Authors: Akash Pradhan, MVGR College of Engineering / Chandra Prakash, University of Engineering and management Jaipur / Mrinal Sen, IIT (ISM) Dhanbad / Rashmi Pant, NIT Arunachal Pradesh

A coplanar wideband metamaterial absorber at terahertz frequencies has been designed by assembling split ring resonators (SRRs) in matrix form with varying radii and thicknesses. This resulted in absorption ≥99% with a simplified coplanar design.Authors: sukhvinder kaur, IIT Delhi / Nikhil Dey, IIT Delhi / Ravendra K Varshney, IIT Delhi

We employ quantum trajectory Monte Carlo techniques to understand the carrier envelope phase (CEP)'s role in N2 strong-field ionization. Simulations indicate the ratio of down-to-upfield ions is roughly 2:1 regardless of CEP.Authors: Alex Schimmoller, Ohio State University / Harrison Pasquinilli, Ohio State University / Alexandra Landsman, Ohio State University

Study explores the application of two photon fluorescence lifetime imaging modality to reveal metabolic alterations in ex vivo brain tissue by analyzing intrinsic NADH autofluorescence, providing valuable insights into brain metabolism and potential disease mechanisms.Authors: Gagan Raju, Manipal School of Life Sciences, Manipal Academy of Higher Education / Dr. Girish Gangadharan, Manipal School of Life Sciences, Manipal Academy of Higher Education / Vishwanath Managuli, Manipal Institute of Technology, Manipal Academy of Higher Education / Krishna Mahato, Manipal School of Life Sciences, Manipal Academy of Higher Education / Nirmal Mazumder, Manipal School of Life Sciences, Manipal Academy of Higher Education

Analytical techniques such as Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and differential scanning calorimetry (DSC). are used to study the physicochemical properties of native and retrograded rice starch.Authors: Ishita Chakraborty, Manipal School of Life Science / BAISHALI DAS, Manipal School of Life Science / Indira Govindaraju, Manipal School of Life Science / Nirmal Mazumder, Manipal School of Life Science

We present a graphene-based wire-grid terahertz polarizer with a high extinction ratio (ER). The device achieves an ER of up to 60 dB at 1.7 THz, demonstrating the potential for various applications in THz optoelectronics.Authors: ANJALI CHAUDHARY, IIT DELHI / Sunil Kumar, IIT DELHI / R.K. Varshney, IIT DELHI