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Krishna, LAS and Deka, J and Biswas, R and Raghunathan, V (2023) Plane-wave Expansion based Modelling of Linear and Non-Linear Response of Resonant Metasurfaces under Realistic Excitation Conditions. In: Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, 26 - 30 June 2023, Munich.
Deka, J and Dandu, M and Lal Krishna, AS and Menon, S and Jyothsna, KM and Majumdar, K and Raghunathan, V (2020) Silicon-on-insulator based high-index contrast gratings for resonant enhancement of second harmonic generation from two-dimensional material. In: Proceedings of SPIE - The International Society for Optical Engineering, 6 April 2020 - 10 April 2020, France.
Biswas, R and Dandu, M and Prosad, A and Menon, S and Majumdar, K and Raghunathan, V (2019) Observation of second harmonic generation from multilayer Tin diselenide. In: International Conference on Optical MEMS and Nanophotonics Volume 2019-July, July 2019, Article number 8925139, Pages 30-31 2019 International Conference on Optical MEMS and Nanophotonics, OMN 2019; Daejeon; South Korea; 28 July 2019 through 1 August 2019, July 2019, Daejeon, Korea (South), pp. 30-31.
Biswas, R and Prasad, S and Prosad, A and Lal Krishna, AS and Gupta, TD and Raghunathan, V (2023) Second Harmonic Generation Enhancement from Isolated Selenium Nanowire Coupled to Mie Resonant Silicon Disks. In: UNSPECIFIED.
Deka, JK and Jyothsna, KM and Biswas, R and Raghunathan, V (2023) Chiral harmonic generation studies from partially etched amorphous silicon nanodisk arrays. In: 2D Photonic Materials and Devices VI 2023, 31 January - 2 February 2023, San Francisco.
Biswas, R and Prosad, A and Krishna, L and Raghunathan, V (2023) Enhanced Four Wave Mixing from MoS2 disks Supporting Higher-order Anapole Resonance. In: 2D Photonic Materials and Devices VI 2023, 31 Jan - 2 February 2023, San Francisco.
Ahmad, F and Raghunathan, V (2023) Hybrid LED-Laser Transmitter for Colour-Tunable Gigabit-persecond Class Indoor Visible Light Communication. In: Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII 2023, 31 Jan - 2 Feb 2023, San Francisco.
Ahmad, F and Raghunathan, V (2023) Reconfigurable Multi-beam Steering Using Segmented Spatial Light Modulator For Indoor Optical Wireless Communication. In: Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII 2023, 31 Jan - 2 Feb2023, San Francisco.
Sathisha, RN and Ahmed, F and Raghunathan, V (2023) Demonstration of RF-VLC Hand-over using Receiver side Channel Selection. In: 15th International Conference on COMmunication Systems and NETworkS, COMSNETS 2023, 3 - 8 January 2023, Bangalore, pp. 382-386.
Bag, U and Krishna, LAS and Jyothsna, KM and Raghunathan, V (2023) Polarization Independent Quasi-BIC Resonances in Silicon Metasurfaces with Double Asymmetry. In: UNSPECIFIED.
Manattayil, JK and Lal Krishna, AS and Prosad, A and Sarkar, P and Kim, H and Bhat, R and Raghunathan, V (2022) Sub-diffraction Second Harmonic Generation Microscopy using Particle Swarm Optimized Phase Mask. In: Frontiers in Optics, FiO 2022, 17- 20 October 2022, Rochester.
Menon, S and Raghunathan, V (2022) Second Harmonic Generation Enhancement from Amorphous Silicon-Gallium Nitride based Guided Mode Resonant Structures. In: 5th IEEE Research and Applications of Photonics in Defense Conference, RAPID 2022, 12 - 14 September 2022, Miramar Beach.
Manattayil, JK and Krishna, LAS and Kim, H and Raghunathan, V (2022) Focal Field Engineered Infrared-sensitive Third-order Sum Frequency Generation Microscopy. In: Biomedical Spectroscopy, Microscopy, and Imaging II 2022, 9 - 20 May 2022, 9 May 2022 through 20 May 2022.
Manattayil, JK and Krishna, LAS and Kim, H and Raghunathan, V (2022) Focal Field Engineered Infrared-sensitive Third-order Sum Frequency Generation Microscopy. In: Biomedical Spectroscopy, Microscopy, and Imaging II 2022, 9 - 20 May 2022, Virtual, Online.
Prosad, A and Biswas, R and Talabattula, S and Raghunathan, V (2022) Realistic Quantum Mechanical Modelling of Spontaneous Four-wave Mixing in Silicon Nitride Waveguide and Ring Resonator. In: 2022 IEEE International Conference on Emerging Electronics, 11- 14 Dec 2022, Bangalore, India.
Biswas, R and Prosad, A and Lal Krishna, AS and Menon, S and Raghunathan, V (2022) Enhanced Second Harmonic Generation from vertically stacked multilayer Gallium Selenide separated by low-index PMMA spacer layer. In: 2D Photonic Materials and Devices V 2022, 20 - 24 February 2022, Virtual, Online at San Francisco, California, United States.
Menon, S and Jyothsna, KM and Biswas, R and Prosad, A and Krishna, ASL and Raghunathan, V (2022) Enhanced third harmonic generation in layered guided mode resonant structures using pupil engineered conical excitation. In: High Contrast Metastructures XI 2022, 20 February 2022 through 24 February 2022, Virtual, Online at San Francisco, California, United States.
Krishna, L and Jyothsna, KM and Prosad, A and Biswas, R and Menon, S and Raghunathan, V (2022) Quasi-BIC resonances in amorphous germanium zero contrast gratings with dual asymmetric step profile for mid infrared frequency up-conversion. In: High Contrast Metastructures XI 2022, 20-24 February 2022, Virtual, Online at San Francisco, California, United States,.
Lal Krishna, AS and Raghunathan, V (2021) Mid infrared surface relief photonic devices using high-index contrast amorphous germanium sub-wavelength structures. In: 4th IEEE Research and Applications of Photonics in Defense Conference, RAPID 2021, 2-4 Aug 2021.
Gali, S and Raghunathan, V and Selvaraja, SK (2021) Compact low-loss strip to double-slot waveguide coupler for sensing application. In: 17th IEEE International Conference on Group IV Photonics, GFP 2021, 7-10 Dec 2021, Virtual, Online.
Vishnu Praveen, A and Raghunathan, V (2021) Design of Polarization Independent Silicon Nitride One-Dimensional Gratings Using Genetic Algorithm. In: International Conference on Optics and Electro-optics, ICOL 2019, 19-27 oct 2019, pp. 105-108.
Ahmad, F and Raghunathan, V (2021) Design of variable link length indoor visible light communication system using focus tunable liquid lens. In: Broadband Access Communication Technologies XV 2021, 6-11 Mar 2021.
Biswas, R and Chatterjee, S and Deka, J and Advaitha, M and Majumdar, K and Raghunathan, V (2021) Enhanced second harmonic generation from a dielectric encapsulated multilayer Gallium Selenide. In: CLEO: QELS_Fundamental Science, CLEO: QELS 2021 - Part of Conference on Lasers and Electro-Optics, CLEO 2021, 9-14 May 2021.
Raghunathan, V and Deka, J and Krishna, L and Menon, S and Jyothsna, KM and Biswas, R (2021) Harmonic generation from 2D materials coupled to resonant metasurfaces. In: 2D Photonic Materials and Devices IV 2021, 6-11 Mar 2021.
Lal Krishna, AS and Biswas, R and Jyothsna, KM and Menon, S and Raghunathan, V (2021) Resonantly enhanced third harmonic up-conversion of 2.4 micron excitation using amorphous Germanium zero contrast gratings. In: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021, 21-25 Jun 2021, Munich.
Menon, S and KM, J and Raghunathan, V (2021) Silicon nitride based medium contrast gratings for generating longitudinally polarized resonant fields. In: High Contrast Metastructures X 2021, 6-11 Mar 2021.
Krishna, ASL and Mere, V and Selvaraja, SK and Raghunathan, V (2020) Angle Tolerant Mid-Infrared Notch Filters using Two-Dimensional Amorphous Germanium High Index Contrast Sub-Wavelength Gratings. In: Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, 10-15 May 2020, San Jose; United States.
Biswas, R and Dandu, M and Jha, KK and Menon, S and Jyothsna, KM and Majumdar, K and Raghunathan, V (2020) Layer-dependent third-harmonic generation in multi-layer SnSe2. In: 2D Photonic Materials and Devices III 2020, 5-6 Feb 2020, San Francisco.
Sathisha, RN and Jha, V and Ahmad, F and Raghunathan, V (2020) Demonstration of High Data-rate Multimedia Streaming in a Laser-based Indoor Visible Light Communication System. In: International Conference on COMmunication Systems and NETworkS, 7-11 January 2020, Bengaluru, pp. 614-617.
Ahmad, F and Ramachandrapura Nagaraju, S and Jyothsna, KM and Biswas, R and Raghunathan, V (2020) Lens design-based optimization of path loss in a high data-rate indoor visible light communication link. In: Proceedings of SPIE - The International Society for Optical Engineering, 3-4 February 2020, San Francisco; United States.
Menon, S and Prosad, A and Biswas, R and Raghunathan, V (2020) Silicon nitride based guided mode resonance structures for enhancement of nonlinear optical effects. In: Nanophotonics VIII 2020, 6-10 April 2020, Virtual, Online, France.
Gali, S and Raghunathan, V and Selvaraja, SK (2020) Silicon nitride waveguide platform for on-chip spectroscopy at visible and NIR wavelengths. In: Integrated Optics: Devices, Materials, and Technologies XXIV 2020, 3-6 February 2020, San Francisco.
Menon, S and Dandu, M and Deka, J and Majumdar, K and Raghunathan, V (2020) Third-Harmonic Generation from Multilayer Graphene on Silicon Nitride Guided Mode Resonance Structures. In: Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, 10-15 May 2020, San Jose; United States.
Km, J and Kim, H and Raghunathan, V (2019) Sub-diffraction resolution of periodic grating structures in a focus engineered sum frequency generation microscope. In: 2019 International Conference on Optical MEMS and Nanophotonics (OMN), 28 July-1 Aug. 2019, Daejeon, Korea (South), pp. 74-75.
Gali, S and Raghunathan, V and Selvaraja, SK (2019) Visible Wavelength Photonic Integrated Circuit in Silicon Nitride Platform for On-Chip Sensing Applications. In: 2019-Workshop on Recent Advances in Photonics, 13-14 Dec 2019, Guwahati.
Biswas, R and Dandu, M and Prosad, A and Menon, S and Majumdar, K and Raghunathan, V (2019) Observation of second harmonic generation from multilayer Tin diselenide. In: International Conference on Optical MEMS and Nanophotonics, OMN 2019, 28 July 2019- 1 August 2019, Daejeon, Korea (South), Korea (South), pp. 30-31.
Km, J and Kim, H and Raghunathan, V (2019) Sub-diffraction resolution of periodic grating structures in a focus engineered sum frequency generation microscope. In: International Conference on Optical MEMS and Nanophotonics, OMN 2019, 28 July 2019 -1 August 2019, Daejeon, Korea (South), Korea (South), pp. 74-75.
Jha, KK and Sarkar, P and Biswas, R and Bhat, R and Raghunathan, V (2019) A Spatiotemporal analysis using second harmonic generation reveals enhancement of Type I Collagen polymerization by dermatan sulfate glycosaminoglycans. In: Advances in Microscopic Imaging II 2019, 26-27 Jun 2019, Munich, Germany.
Biswas, R and Deka, J and Jha, KK and Vishnu Praveen, A and Lal Krishna, AS and Raghunathan, V (2019) Four-Wave Mixing Microscopy of Resonant Silicon-on-Insulator Two-Dimensional Zero Contrast Gratings. In: CLEO: Applications and Technology, CLEO_AT 2019San Jose5 May 2019through 10 May 2019Code 141078, 5 - 10 May 2019, San Jose.
Menon, S and Lal Krishna, AS and Gupta, MVNS and Ameen, E and Pesala, B and Raghunathan, V (2019) Silicon-nitride-based medium-contrast gratings for resonant fluorescence enhancement in the visible wavelength range. In: High Contrast Metastructures VIII 2019, 4 - 7 February 2019, San Francisco.
Deka, JK and Jha, KK and Sruti Menon, LKAS and Raghunathan, V (2018) Resonant Third Harmonic Generation Microscopy of Amorphous-silicon Sub-Wavelength Nanostructures. In: 2018 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2018, 29 July - 3 August 2018, Wanchai.
Pramod, A and Yogeswari, C and Singh, AK and Girisun, TCS and Konkada Manattayil, J and Raghunathan, V and Nagalakshmi, R (2024) Nonlinear optical characterisation of electrospun Benzil-PMMA nanofibers. In: Optics and Laser Technology, 168 .
Lee, G and Jyothsna, KM and Park, J and Lee, JD and Raghunathan, V and Kim, H (2023) Confocal nonlinear optical imaging on hexagonal boron nitride nanosheets. In: PhotoniX, 4 (1).
Chatterjee, S and Dandu, M and Dasika, P and Biswas, R and Das, S and Watanabe, K and Taniguchi, T and Raghunathan, V and Majumdar, K (2023) Harmonic to anharmonic tuning of moiré potential leading to unconventional Stark effect and giant dipolar repulsion in WS2/WSe2 heterobilayer. In: Nature Communications, 14 (1).
Prosad, A and Biswas, R and Lal Krishna, AS and Srinivas, T and Raghunathan, V (2023) Single- and two-photon absorption induced all-optical control of gallium selenide integrated silicon nitride photonic devices in the 700-800 nm wavelength range. In: APL Photonics, 8 (8).
Krishna AS, L and Biswas, R and Raghunathan, V (2023) Mid-Infrared Off-Axis Resonant Mode Hybridization in Amorphous Silicon Sub-Wavelength Grating Structures. In: Advanced Optical Materials .
Biswas, R and Prosad, A and Krishna, LAS and Menon, S and Raghunathan, V (2022) Evolutionary design of two-dimensional material Fabry-Perot structures for enhanced second harmonic generation. In: Nanophotonics .
Lee, G and Jyothsna, KM and Lim, H and Park, J and Lee, J and Raghunathan, V and Kim, H (2022) Sub 100 nm resolution confocal focus-engineered coherent anti-Stokes Raman scattering microscopy under non-degenerate pumping condition. In: Optics and Lasers in Engineering, 158 .
Debnath, R and Sett, S and Kundu, S and Biswas, R and Raghunathan, V and Jain, M and Ghosh, A and Singh, A (2022) Tuning exciton complexes in twisted bilayer WSe2 at intermediate misorientation. In: Physical Review B, 106 (12).
Manattayil, JK and Lal Krishna, AS and Biswas, R and Kim, H and Raghunathan, V (2022) Focus-engineered sub-diffraction imaging in infrared-sensitive third-order sum frequency generation microscope. In: Optics Express, 30 (14). pp. 25612-25626.
Ahmad, F and Sathisha, RN and Jyothsna, KM and Raghunathan, V (2022) Hybrid Laser-LED Transmitter With Closed-Loop Beam-Steering Control for Indoor Optical Wireless Communication. In: Journal of Lightwave Technology, 40 (12). pp. 3557-3566.
Menon, S and Jyothsna, KM and Biswas, R and Prosad, A and Lal Krishna, AS and Raghunathan, V (2022) Third harmonic generation enhancement from silicon-based multilayer guided mode resonance structures under a conical mounting condition. In: OSA Continuum, 1 (5). pp. 1015-1026.
Deka, J and Raghunathan, V (2022) High spectral contrast chiral second-harmonic generation from multilayer gallium selenide coupled to silicon holey disk metasurfaces. In: Journal of the Optical Society of America B: Optical Physics, 39 (3). pp. 828-834.
Lal Krishna, AS and Menon, S and Prosad, A and Raghunathan, V (2022) Mid-infrared quasi-BIC resonances with sub-wavelength slot mode profiles in germanium-based coupled guided-mode resonance structures. In: Photonics Research, 10 (1). pp. 68-75.
Debnath, R and Sett, S and Biswas, R and Raghunathan, V and Ghosh, A (2021) A simple fabrication strategy for orientationally accurate twisted heterostructures. In: Nanotechnology, 32 (45).
Menon, S and Prosad, A and Krishna, ASL and Biswas, R and Raghunathan, V (2021) Resonant mode engineering in silicon compatible multilayer guided-mode resonance structures under Gaussian beam excitation condition. In: Journal of Optics (United Kingdom), 23 (10).
Vura, S and Jeyaselvan, V and Biswas, R and Raghunathan, V and Selvaraja, SK and Raghavan, S (2021) Epitaxial BaTiO3on Si(100) with In-Plane and Out-of-Plane Polarization Using a Single TiN Transition Layer. In: ACS Applied Electronic Materials, 3 (2). pp. 687-695.
Jyothsna, KM and Sarkar, P and Jha, KK and Lal Krishna, AS and Raghunathan, V and Bhat, R (2021) A biphasic response of polymerized Type 1 collagen architectures to dermatan sulfate. In: Journal of Biomedical Materials Research - Part A .
Debnath, R and Maity, I and Biswas, R and Raghunathan, V and Jain, M and Ghosh, A (2020) Evolution of high-frequency Raman modes and their doping dependence in twisted bilayer MoS2. In: Nanoscale, 12 (33). pp. 17272-17280.
Ahmad, F and Ramachandrapura, S and Manattayil, J and Raghunathan, V (2020) Path-Loss Optimized Indoor Laser-Based Visible Light Communication System for Variable Link Length Gigabit-Class Communication. In: IEEE Photonics Journal, 12 (4).
Raghunathan, V and Deka, J and Menon, S and Biswas, R and Lal Krishna, AS (2020) Nonlinear optics in dielectric guided-mode resonant structures and resonant metasurfaces. In: Micromachines, 11 (4).
Chaudhary, R and Raghunathan, V and Majumdar, K (2020) Origin of selective enhancement of sharp defect emission lines in monolayer WSe2 on rough metal substrate. In: Journal of Applied Physics, 127 (7).
Biswas, R and Deka, J and Jha, KK and Vishnu Praveen, A and Lal Krishna, AS and Menon, S and Raghunathan, V (2019) Resonant four-wave mixing microscopy on silicon-on-insulator based zero-contrast gratings. In: OSA Continuum, 2 (10). pp. 2864-2874.
Biswas, R and Dandu, M and Menon, S and Jha, KK and Jyothsna, KM and Majumdar, K and Raghunathan, V (2019) Third-harmonic generation in multilayer Tin Diselenide under the influence of Fabry-Perot interference effects. In: Optics Express, 27 (20). pp. 28855-28865.
