Dr. Nilesh Jayantilal Vasa Profile

Dr. Nilesh Jayantilal Vasa

Professor at IIT Madras

SPIE Involvement:

Author

Publications (27)

Proceedings Article | 17 April 2024 Poster

Birefringent characterization of nerve tissue using polarization-sensitive optical coherence tomography

Richa Parihar, Nuggu Phani Harsha, Nilesh Vasa, Joy Mammen

Proceedings Volume 13108, 1310809 (2024) https://doi.org/10.1117/12.3028957

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Proceedings Article | 12 May 2023 Poster + Paper

Laser spectroscopic analysis and characterization studies of marine biofouling

Della Thomas, Surendran S, Nilesh J. Vasa

Proceedings Volume 12638, 126380E (2023) https://doi.org/10.1117/12.2669901

KEYWORDS: Biofouling, Fiber reinforced polymers, Laser induced breakdown spectroscopy, Scanning electron microscopy, Oceanography, Laser spectroscopy, Biological research, Calcium, Crystals, Biological samples

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Proceedings Article | 4 March 2022 Presentation + Paper

Nanosecond laser-assisted hybrid micro-scribing based fabrication of frequency selective surface

Sooraj Shiby, Yugandhara Yadam, Balamurugan Sivaprakasam, Kavitha Arunachalam, Nilesh Vasa

Proceedings Volume 11989, 119890T (2022) https://doi.org/10.1117/12.2609855

KEYWORDS: Copper, Dielectrics, Laser ablation, Pulsed laser operation, Electrodes, Ions, Fabrication, FSS based metamaterials, Chlorine, X band

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Proceedings Article | 13 April 2020 Presentation + Paper

Bacterial strain discrimination using a low-cost laser-induced breakdown spectroscopy technique under optimized growth conditions

Vivek Sivakumar, Sujatha N. Unni, Nilesh J. Vasa, Padma Srikanth, Ilakkiya Arumugam

Proceedings Volume 11362, 113620A (2020) https://doi.org/10.1117/12.2555722

KEYWORDS: Laser induced breakdown spectroscopy, Sodium, Potassium, Bacteria, Calcium, Sensors, Charge-coupled devices, Modulation, Plasma, Analytical research

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Proceedings Article | 13 March 2019 Presentation

Fabrication of multicomponent semiconductor microspheres by laser ablation in air (Conference Presentation)

Daisuke Nakamura, Yuichiro Wakiyama, Hiroki Oshima, Mitsuhiro Higashihata, Hiroshi Ikenoue, Nilesh Vasa, M. S. Ramachandra Rao

Proceedings Volume 10905, 1090510 (2019) https://doi.org/10.1117/12.2510985

KEYWORDS: Semiconductors, Laser ablation, Semiconductor lasers, Fabrication, Crystals, Spherical lenses, Laser crystals, Zinc oxide, Silicon, Liquid crystals

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Proceedings Article | 3 September 2018 Paper

Low cost laser induced breakdown spectroscopy technique for detection of microorganisms

Vivek Sivakumar, Sujatha N. Unni, Nilesh J. Vasa, Padma Srikanth

Proceedings Volume 10753, 1075313 (2018) https://doi.org/10.1117/12.2322980

KEYWORDS: Laser induced breakdown spectroscopy, Bacteria, Potassium, Sodium, Microorganisms, Optical filters, Calcium, Sensors, Data modeling, Principal component analysis

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Proceedings Article | 14 March 2018 Presentation

Simple fabrication of semiconductor microspheres by laser ablation in air (Conference Presentation)

Daisuke Nakamura, Ryohei Tasaki, Yuichiro Wakiyama, Sho Kawagoe, Hiroki Oshima, Mitsuhiro Hiashihata, Nilesh Vasa, Hiroshi Ikenoue

Proceedings Volume 10519, 1051914 (2018) https://doi.org/10.1117/12.2291401

KEYWORDS: Laser ablation, Zinc oxide, Semiconductor lasers, Semiconductors, Optical vortices, Crystals, Laser crystals, Silicon, Laser processing, Beam shaping

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Proceedings Article | 19 February 2018 Paper

Pulsed laser micro-scribing of copper thin films on polyimide substrate in NaCl solution

Sooraj Shiby, Srinagalakshmi Nammi, Nilesh Vasa, Sivarama Krishnan

Proceedings Volume 10520, 105201O (2018) https://doi.org/10.1117/12.2289724

KEYWORDS: Copper, Etching, Plasma, Laser ablation, Ions, Thin films, Chlorine, Wet etching, Laser beam diagnostics

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Proceedings Article | 20 February 2017 Paper

Optical and magnetic characterization of transition metal ion doped ZnO microspheres synthesized via laser ablation in air

Parvathy Anitha Sukkurji, Yuki Fujiwara, Nilesh Jayantilal Vasa, M. S. Ramachandra Rao, Mitsuhiro Higashihata, Daisuke Nakamura

Proceedings Volume 10090, 100901X (2017) https://doi.org/10.1117/12.2253560

KEYWORDS: Zinc oxide, Luminescence, Transition metals, Semiconductors, Ions, Magnetic semiconductors, Crystals, Magnetism, Laser ablation, P-type semiconductors, Scanning electron microscopy, Manganese, Raman spectroscopy, YAG lasers, Ultraviolet radiation, Spherical lenses

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Proceedings Article | 29 April 2016 Paper

Fiber Bragg grating-based wavelength modulation spectroscopy technique for trace gas sensing

Shivani Tiwari, Nilesh Vasa, Balaji Srinivasan

Proceedings Volume 9899, 98992E (2016) https://doi.org/10.1117/12.2227749

KEYWORDS: Modulation, Fiber Bragg gratings, Spectroscopy, Sensing systems, Ferroelectric materials, Gas sensors, Transducers, Gases, Optical filters, Signal detection, Absorption, Actuators, Calibration, Target detection

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SPIE Journal Paper | 11 March 2016

Underwater annealing and texturing for enhancing electrical characteristics of n-aSi/p-cSi using Nd3+:YAG laser beam-overlap technique with a wavelength of 532 nm

Esther Vidhya Yesudasan, Nilesh Vasa

JPE, Vol. 6, Issue 01, 014001, (March 2016) https://doi.org/10.1117/12.10.1117/1.JPE.6.014001

KEYWORDS: Annealing, Amorphous silicon, Crystals, Laser crystals, Thin films, Silicon, Gaussian beams, YAG lasers, Laser therapeutics, Neodymium

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SPIE Journal Paper | 23 October 2015

Influence of pulsed Nd³⁺ : YAG laser beam profile and wavelength on microscribing of copper and aluminum thin films

Srinagalakshmi Nammi, Nilesh Vasa, G. Balaganesan, Sanjay Gupta, Anil Mathur

JM3, Vol. 14, Issue 04, 044503, (October 2015) https://doi.org/10.1117/12.10.1117/1.JMM.14.4.044503

KEYWORDS: Copper, Thin films, Aluminum, Laser ablation, Pulsed laser operation, Neodymium, YAG lasers, Scanning electron microscopy, Absorption, Plasma

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Proceedings Article | 15 July 2015 Paper

Aqueous glucose measurement using differential absorption-based frequency domain optical coherence tomography at wavelengths of 1310 nm and 1625 nm

Pauline John, Murali Manoj, N. Sujatha, Nilesh Vasa, Suresh Rao

Proceedings Volume 9537, 953711 (2015) https://doi.org/10.1117/12.2183830

KEYWORDS: Glucose, Absorption, Optical coherence tomography, Mirrors, Absorption spectroscopy, Tissue optics, Scattering, Fourier transforms, Spectrum analysis, Reflection

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Proceedings Article | 15 June 2015 Paper

Non-invasive detection of periodontal loss of attachment using optical coherence tomography

Vani Damodaran, Nilesh Vasa, R. Sarathi, Suresh Ranga Rao

Proceedings Volume 9654, 96540Q (2015) https://doi.org/10.1117/12.2181744

KEYWORDS: Crystals, Optical coherence tomography, Electro optics, Ferroelectric materials, Teeth, Tissues, Refractive index, Imaging systems, Mirrors, Crystallography

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Proceedings Article | 12 March 2015 Paper

Investigation on the effect of ambient and beam profile in annealing and texturing of amorphous silicon thin films by pulsed Nd3+:YAG laser

Y. Esther Vidhya, Nilesh Vasa, R. Sriram

Proceedings Volume 9351, 93511I (2015) https://doi.org/10.1117/12.2079750

KEYWORDS: Crystals, Amorphous silicon, Annealing, Laser crystals, Pulsed laser operation, Raman spectroscopy, Silicon, Thin films, Scanning electron microscopy, Gaussian beams

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Proceedings Article | 12 March 2015 Paper

Influence of pulsed Nd3+: YAG laser beam profile and wavelength on micro-scribing of copper and aluminum thin films

Srinagalakshmi Nammi, Nilesh Vasa, Sanjay Gupta, Anil Mathur

Proceedings Volume 9351, 93510L (2015) https://doi.org/10.1117/12.2079281

KEYWORDS: Copper, Thin films, Aluminum, Laser ablation, YAG lasers, Beam shaping, Scanning electron microscopy, Pulsed laser operation, Absorption, Profilometers

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Proceedings Article | 24 August 2011 Paper

Experimental investigations on ammonia and water-vapor sensing for emission monitoring

Divya Kannan, Nilesh Vasa

Proceedings Volume 8173, 81731Q (2011) https://doi.org/10.1117/12.897896

KEYWORDS: Absorption, Databases, Sensors, Diodes, Combustion, Molecules, Absorbance, Oxygen, Gases, Semiconductor lasers

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Proceedings Article | 22 February 2011 Paper

Investigation on solid state Nd[sup]3+[/sup]:YAG line beam laser annealing and texturing of amorphous silicon thin films

N. Vasa, A. Palani, M. Singaperumal

Proceedings Volume 7920, 79200M (2011) https://doi.org/10.1117/12.874844

KEYWORDS: Amorphous silicon, Annealing, Crystals, Laser crystals, Silicon films, Resistance, Silicon, Raman spectroscopy, Pulsed laser operation, Interfaces

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Proceedings Article | 18 February 2010 Paper

Investigation on production of highly textured Sb doped polycrystalline silicon using solid state Nd:YAG laser for photovoltaic application

I. Palani, N, Vasa, M, Singaperumal, T, Okada

Proceedings Volume 7584, 758410 (2010) https://doi.org/10.1117/12.841105

KEYWORDS: Amorphous silicon, Antimony, Crystals, Laser crystals, Doping, Silicon, Scanning electron microscopy, Diffusion, Raman spectroscopy, Semiconductor lasers

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Proceedings Article | 17 February 2010 Paper

Investigation on particle generation by micro-electro discharge machining

Sourav Mitra, . Muralidhara, N. Vasa, Singaperumal M.

Proceedings Volume 7590, 75900J (2010) https://doi.org/10.1117/12.845709

KEYWORDS: Particles, Dielectrics, Nanoparticles, Aluminum, Metals, Process modeling, Atmospheric modeling, Heat flux, Liquids, Microfluidics

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Proceedings Article | 17 February 2010 Paper

Estimation of tool wear compensation during micro-electro-discharge machining of silicon using process simulation

. Muralidhara, Nilesh Vasa, Singaperumal M.

Proceedings Volume 7590, 75900K (2010) https://doi.org/10.1117/12.845953

KEYWORDS: Silicon, Micromachining, Copper, Microfabrication, Microelectromechanical systems, Sensors, Control systems, Semiconducting wafers, Electrodes, Dielectric filters

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SPIE Journal Paper | 1 January 2010

Wear-ratio-based tool wear compensation for microelectrodischarge-machining of silicon through process simulation

Muralidhara Rao, Nilesh Vasa, Makram Singaperumal

JM3, Vol. 9, Issue 01, 013040, (January 2010) https://doi.org/10.1117/12.10.1117/1.3280262

KEYWORDS: Silicon, Micromachining, Semiconducting wafers, Copper, Process modeling, Prototyping, Control systems, Sensors, Process control, Semiconductor materials

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Proceedings Article | 22 December 2006 Paper

Application of differential absorption lidar system for CO2 monitoring at different wavelengths around 1.6 micron and 2 micron

Nilesh Vasa, Michihiro Uchiumi, Shigeru Yokoyama

Proceedings Volume 6409, 640909 (2006) https://doi.org/10.1117/12.694089

KEYWORDS: Absorption, Sapphire lasers, LIDAR, Carbon monoxide, Electro optics, Prisms, Laser sources, Mirrors, Light sources, Raman spectroscopy

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Proceedings Article | 21 March 2003 Paper

Development of DIAL for CO2 and CH4 in the atmosphere

Michihiro Uchiumi, Nilesh Vasa, Makoto Fujiwara, Shigeru Yokoyama, Mitsuo Maeda, Osamu Uchino

Proceedings Volume 4893, (2003) https://doi.org/10.1117/12.466107

KEYWORDS: Carbon dioxide, Sapphire lasers, Absorption, LIDAR, Raman spectroscopy, Mirrors, Gases, Prisms, Molecules, Carbon dioxide lasers

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Proceedings Article | 13 February 2001 Paper

Development of a compact light source at 1.67 um for methane leak detection using DIAL

Nilesh Vasa, Kouji Saito, Kouki Ikuta, Yuji Oki, Mitsuo Maeda

Proceedings Volume 4153, (2001) https://doi.org/10.1117/12.417081

KEYWORDS: Optical parametric oscillators, Crystals, Light sources, Absorption, Ferroelectric materials, Sensors, Nonlinear crystals, Methane, Optical amplifiers, Prototyping

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Proceedings Article | 13 February 2001 Paper

Nonlinear Raman spectroscopy without tunable laser and application to lidar

Mitsuo Maeda, Yuji Oki, Yujii Nonaka, Shinichiro Nakazono, Nilesh Vasa

Proceedings Volume 4153, (2001) https://doi.org/10.1117/12.417061

KEYWORDS: Raman spectroscopy, LIDAR, Molecules, Signal detection, Tunable lasers, Remote sensing, Atmospheric propagation, Nd:YAG lasers, Atmospheric sensing, Carbon monoxide

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Proceedings Article | 15 July 1999 Paper

Pulsed laser deposition of Ti:sapphire thin films using high-speed rotating target

Yoshiki Nakata, Hiroshi Uetsuhara, Satoshi Goto, Nilesh Vasa, Tatsuo Okada, Mitsuo Maeda

Proceedings Volume 3618, (1999) https://doi.org/10.1117/12.352721

KEYWORDS: Thin films, Laser ablation, Thin film deposition, Chemical species, Molecules, Waveguide lasers, Silicon, CCD cameras, Scanning electron microscopy, Crystals

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Showing 5 of 27 publications

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