Prof. V. R. Supradeepa Profile

Prof. V. R. Supradeepa

Associate Professor at Ctr for Nano Science and Engineering CeNSE

SPIE Involvement:

Conference Program Committee | Author | Editor

Publications (41)

Proceedings Article | 12 March 2024 Presentation + Paper

Multipoint thermal monitoring of silicon wafer under processing utilizing a spectrally shaped supercontinuum source

Sarthak Dash, Abhigyan Goswami, Rashmita Deheri, Sushobhan Avasthi, V. Supradeepa

Proceedings Volume 12878, 128780I (2024) https://doi.org/10.1117/12.3002717

KEYWORDS: Temperature metrology, Semiconducting wafers, Silicon, Supercontinuum sources, Signal intensity, Absorption, Sensors, Calibration, Wafer level optics, Supercontinuum generation

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Proceedings Article | 12 March 2024 Presentation + Paper

A novel detection mechanism for nonlinear distortions in ultrashort pulses transmitted through dynamic fiber optic links

C. Lakshmi, V. Supradeepa

Proceedings Volume 12875, 1287507 (2024) https://doi.org/10.1117/12.3000816

KEYWORDS: Ultrafast phenomena, Autocorrelation, Nonlinear optics, Reflection, Sensors, Fiber optics, Reflectivity, Quartz, Interferometers, Dispersion, Femtosecond pulse shaping

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Proceedings Article | 12 March 2024 Presentation + Paper

Widely tunable visible pulsed cascaded Raman fiber laser source

Abhigyan Goswami, Sarthak Dash, Rashmita Deheri, V. Supradeepa

Proceedings Volume 12869, 128690H (2024) https://doi.org/10.1117/12.3000916

KEYWORDS: Fiber lasers, Second harmonic generation, Crystals, Ytterbium, Visible radiation, Laser sources, Biomedical applications, Near infrared, Phase matching, Raman scattering

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Proceedings Article | 12 March 2024 Paper

Linewidth control of cascaded Raman fiber lasers and visible conversion

Sarthak Dash, Rashmita Deheri, V. Supradeepa

Proceedings Volume 12865, 128650N (2024) https://doi.org/10.1117/12.3002546

KEYWORDS: Visible radiation, Second harmonic generation, Fiber lasers, Tunable filters, Crystals, Ytterbium, Reflection, Near infrared, Optical filters

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Proceedings Article | 12 March 2024 Paper

Low intensity noise continuous wave supercontinuum generation in standard telecom fiber

Raj Kumar Hudda, V. Supradeepa, V. Balaswamy

Proceedings Volume 12865, 128650O (2024) https://doi.org/10.1117/12.3002515

KEYWORDS: Relative intensity noise, Supercontinuum generation, Fiber Bragg gratings, Raman spectroscopy, Ytterbium, Tunable filters, Dispersion, Signal to noise ratio, Fiber lasers, Continuous wave operation

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Proceedings Article | 4 March 2022 Presentation + Paper

Compact, line broadened frequency comb-based seed laser source for spectral beam combining

Shilpi Arora, Lakshmi C. G., B. Vikram, V. Supradeepa

Proceedings Volume 11982, 119820H (2022) https://doi.org/10.1117/12.2609672

KEYWORDS: Laser sources, Demultiplexers, Frequency combs, Fiber amplifiers, Phase modulation, Fiber lasers, Modulators, Electro optics, High power lasers, Scattering

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Proceedings Article | 4 March 2022 Presentation + Paper

Cascaded raman fiber lasers with very high spectral purity and low intensity noise

Rashmita Deheri, Sarthak Dash, V. R. Supradeepa, V. Balaswamy

Proceedings Volume 11981, 119810K (2022) https://doi.org/10.1117/12.2609890

KEYWORDS: Modulation, Fiber Bragg gratings, Fiber lasers, Optical amplifiers, High power fiber amplifiers, Ytterbium, Wavelength division multiplexing, Phase modulation, Fiber amplifiers

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Proceedings Article | 4 March 2022 Presentation + Paper

Remote characterization and delivery of dispersion-compensated ultrashort pulses over dynamic optical fiber links

Lakshmi C. G., V. Supradeepa

Proceedings Volume 11991, 119910A (2022) https://doi.org/10.1117/12.2609739

KEYWORDS: Ultrafast phenomena, Sensors, Optical fibers, Signal detection, Pulsed laser operation, Photodetectors, Mode locking, Fiber lasers

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Proceedings Article | 4 March 2022 Presentation + Paper

Fourier pulse shaper assisted feedback in cascaded Raman lasers for reduced linewidth and wide wavelength tunability

Sarthak Dash, Rashmita Deheri, Vishal Choudhury, V. Supradeepa

Proceedings Volume 11997, 119970K (2022) https://doi.org/10.1117/12.2609623

KEYWORDS: Fiber lasers, Optical filters, Wavelength tuning, Quantum cascade lasers, Mirrors, Ytterbium, Pulsed laser operation, Feedback control, Reflectivity

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Proceedings Article | 5 March 2021 Poster + Presentation + Paper

Mid-infrared wavelength conversion using a composite Si3N4-HfO2 waveguide device

Than Singh Saini, Shilpi Arora, V. Supradeepa

Proceedings Volume 11689, 116891T (2021) https://doi.org/10.1117/12.2582755

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Proceedings Article | 5 March 2021 Presentation + Paper

Polarization maintaining, narrow linewidth fiber laser with >1kW output power using a novel dual sine and noise modulation for enhanced SBS suppression

Roopa Prakash, B. S. Vikram, V. R. Supradeepa

Proceedings Volume 11665, 1166507 (2021) https://doi.org/10.1117/12.2583154

KEYWORDS: Modulation, Polarization, Fiber lasers, Phase modulation, Scattering, Laser scattering, Laser damage threshold, Fiber amplifiers, Continuous wave operation, Binary data

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Proceedings Article | 5 March 2021 Presentation + Paper

Tunable random distributed feedback Raman fiber laser with Fourier spectral shaper for feedback control

Sarthak Dash, Rashmita Deheri, Vishal Choudhury, V. Supradeepa

Proceedings Volume 11665, 116650Q (2021) https://doi.org/10.1117/12.2583214

KEYWORDS: Raman spectroscopy, Fiber lasers, Optical filters, Feedback control, Tunable lasers, Quantum cascade lasers, Wavelength tuning, Spectral resolution, Laser systems engineering, Bridges

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Proceedings Article | 5 March 2021 Presentation + Paper

Femtosecond supercontinuum source in the C-band with equalized spectra through evolutionary strategy based adaptive optimization of nonlinear spectral broadening

Lakshmi C. G., B. S. Vikram, V. Supradeepa

Proceedings Volume 11670, 116701B (2021) https://doi.org/10.1117/12.2583309

KEYWORDS: Femtosecond phenomena, Supercontinuum sources, Scanning probe microscopy, Optical fibers, Optical coherence tomography, Modulation, Mode locking, Frequency metrology, Four wave mixing, Fluorescence lifetime imaging

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Proceedings Article | 3 March 2020 Presentation + Paper

Continuous linewidth tuning of a laser source from single frequency to over 30GHz using phase modulation amplification using cascaded four-wave mixing

B. Vikram, Roopa Prakash, V. Supradeepa

Proceedings Volume 11276, 112760V (2020) https://doi.org/10.1117/12.2546795

KEYWORDS: Phase modulation, Four wave mixing, Modulators, Fiber amplifiers, Optical amplifiers, Laser sources, Modulation, Temporal coherence

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Proceedings Article | 2 March 2020 Paper

Tunable, CW visible laser sources by frequency doubling of broadly tunable Raman fiber lasers

S. Arun, Vatsal Gehlot, Santosh Aparanji, V. Supradeepa

Proceedings Volume 11264, 1126425 (2020) https://doi.org/10.1117/12.2547235

KEYWORDS: Fiber lasers, Continuous wave operation, Second-harmonic generation, Ytterbium, Laser sources, Tunable lasers, Nonlinear optics

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Proceedings Article | 2 March 2020 Paper

Enhancement of stimulated Brillouin scattering thresholds of high power narrow-linewidth fiber lasers through a simple line-broadening scheme using a combination of sinusoidal and white noise phase modulation

B. S. Vikram, Roopa Prakash, Santosh Aparanji, V. R. Supradeepa

Proceedings Volume 11264, 112641M (2020) https://doi.org/10.1117/12.2546544

KEYWORDS: Modulation, Phase modulation, Laser scattering, Fiber lasers, Scattering, Optical amplifiers, Fiber amplifiers, Laser damage threshold, Tunable lasers

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Proceedings Article | 2 March 2020 Presentation + Paper

High repetition rate sub-picosecond pulse generation through compression of adaptively optimised frequency combs based on phase-modulated continuous wave lasers

B. S. Vikram, Roopa Prakash, Divya Nair, Shankar Kumar Selvaraja, V. R. Supradeepa

Proceedings Volume 11264, 1126406 (2020) https://doi.org/10.1117/12.2546631

KEYWORDS: Frequency combs, Picosecond phenomena, Electro optics, Pulsed laser operation, Modulators, Interferometry, Continuous wave operation, Nonlinear optics, Optical fibers

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Proceedings Article | 2 March 2020 Presentation + Paper

Fourier pulse shaper for high power fiber coupled lasers and supercontinuum sources

Vishal Choudhury, Arun S., V. Supradeepa

Proceedings Volume 11287, 1128707 (2020) https://doi.org/10.1117/12.2546439

KEYWORDS: Supercontinuum sources, Fiber couplers, Continuous wave operation, Cladding, Optical filters, Collimators, High power fiber lasers, High power lasers, High power fiber coupled lasers, Optical pulse shaping, Femtosecond pulse shaping

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Proceedings Article | 7 March 2019 Paper

Continuously linewidth tunable, polarisation maintaining narrow linewidth fiber laser

B. Vikram, Vishal Choudhury, Roopa Prakash, Santosh Aparanji, V. Supradeepa

Proceedings Volume 10897, 108971V (2019) https://doi.org/10.1117/12.2510431

KEYWORDS: Linear filtering, Attenuators, Phase modulation, Polarization, Fiber lasers, Modulators, Ytterbium, Optical amplifiers, Laser scattering, Nonlinear optics

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Proceedings Article | 7 March 2019 Presentation + Paper

High power, ultra-high spectral purity, broadly wavelength tunable cascaded Raman fiber laser

V. Balaswamy, Harshitha S., Siddharth Ramachandran, V. Supradeepa

Proceedings Volume 10897, 108970N (2019) https://doi.org/10.1117/12.2510534

KEYWORDS: Raman spectroscopy, Optical filters, Fiber lasers, Ytterbium, Superluminescent sources, Wave propagation, Electronic filtering, Signal attenuation, Continuous wave operation, Raman scattering

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Proceedings Article | 4 March 2019 Presentation + Paper

A simple technique for direct, high power laser beam profile measurement using thermal imagers

Binodbihari Panda, V. Balaswamy, Piyush Raj, Monalisa Mallick, V. Supradeepa

Proceedings Volume 10899, 108990S (2019) https://doi.org/10.1117/12.2510168

KEYWORDS: Thermography, High power lasers, Point spread functions, Optical testing, Deconvolution, Sensors, Fiber lasers, Optical filters, Image processing, Cameras

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Proceedings Article | 4 March 2019 Presentation + Paper

Spectral and temporal stability of cascaded Raman based high power, octave spanning, continuous-wave, supercontinuum sources

S. Arun, Vishal Choudhury, V. Balaswamy, V. Supradeepa

Proceedings Volume 10902, 1090209 (2019) https://doi.org/10.1117/12.2510165

KEYWORDS: Supercontinuum sources, Continuous wave operation, Fiber lasers, Raman spectroscopy, Ytterbium, Laser sources, Nonlinear optics, Optical fibers, High power lasers

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Proceedings Article | 4 March 2019 Paper

Adaptive pulse shaping for enhanced spectral broadening of high repetition rate, electro-optic frequency combs

B. S. Vikram, Roopa Prakash, Sneha Banerjee, Shankar Kumar Selvaraja, V. Supradeepa

Proceedings Volume 10902, 109020P (2019) https://doi.org/10.1117/12.2510117

KEYWORDS: Frequency combs, Electro optics, Modulators, Modulation, Pulse shaping, Optical fibers, Electrooptic modulators, Optical communications, Adaptive control

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Proceedings Article | 4 March 2019 Presentation + Paper

Demonstration of input wavelength flexible cascaded Raman resonators based on the inclusion of a broadband distributed feedback reflector

Roopa Prakash, V. Balaswamy, Vishal Choudhury, C. Lakshmi, V. Supradeepa

Proceedings Volume 10902, 109021D (2019) https://doi.org/10.1117/12.2509759

KEYWORDS: Reflectors, Resonators, Fiber lasers, Ytterbium, Wavelength division multiplexing, Amplifiers, Optical filters, Optical fibers, Fiber Bragg gratings

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Proceedings Article | 4 March 2019 Paper

Observation of visible light flashes in high power, near infrared, narrow-linewidth fiber lasers and its potential use as a visual monitor for stimulated Brillouin scattering

Vishal Choudhury, Santosh Aparanji, Roopa Prakash, V. Balaswamy, V. Supradeepa

Proceedings Volume 10903, 109030K (2019) https://doi.org/10.1117/12.2510276

KEYWORDS: Fiber lasers, Visible radiation, Optical amplifiers, Harmonic generation, High harmonic generation

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Proceedings Article | 4 March 2019 Paper

Observation of novel optical and microwave power dependent effects in silicon micro-ring modulator based frequency comb generators

Nagarjun K. P., Piyush Raj, Vadivukkarasi Jeyaselvan, Shankar Kumar Selvaraja, V. R. Supradeepa

Proceedings Volume 10904, 109040S (2019) https://doi.org/10.1117/12.2510898

KEYWORDS: Modulators, Frequency combs, Silicon, Microwave radiation, Microrings, Wavelength division multiplexing, Thermal optics, Signal attenuation, Silicon photonics, Absorption

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Proceedings Article | 4 March 2019 Presentation + Paper

Experimental analysis of stimulated Brillouin enhancement in high power, line-broadened, narrow-linewidth fiber amplifiers due to spectral overlap between the Brillouin gain spectrum and the signal back-scatter from the fiber termination

V. Balaswamy, Roopa Prakash, Vishal Choudhury, Santosh Aparanji, B. S. Vikram, V. Supradeepa

Proceedings Volume 10902, 109021G (2019) https://doi.org/10.1117/12.2510317

KEYWORDS: Phase modulation, Autoregressive models, Fiber amplifiers, Optical amplifiers, Optical fibers, Backscatter, Rayleigh scattering, Scattering, Reflection, High power fiber amplifiers

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Proceedings Article | 26 February 2018 Presentation + Paper

Simple modules for high efficiency conversion of standard ytterbium doped fiber lasers into octave spanning continuous-wave supercontinuum sources

S. Arun, Vishal Choudhury, V. Balaswamy, V. Supradeepa

Proceedings Volume 10512, 105121W (2018) https://doi.org/10.1117/12.2289893

KEYWORDS: Ytterbium, Fiber lasers, Supercontinuum sources, Raman spectroscopy, Supercontinuum generation, Continuous wave operation, Optical fibers, Single mode fibers, Laser sources, Wavelength division multiplexing

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Proceedings Article | 26 February 2018 Presentation + Paper

Raman based power combining and wavelength conversion of high power ytterbium fiber lasers

Santosh Aparanji, V. Balaswamy, S. Arun, V. Supradeepa

Proceedings Volume 10512, 105121U (2018) https://doi.org/10.1117/12.2290347

KEYWORDS: Fiber lasers, Raman spectroscopy, Ytterbium, Quantum efficiency, Laser scattering, Raman scattering, High power lasers, Optical filters, Scattering, Doping

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Proceedings Article | 22 February 2018 Presentation + Paper

Low power generation of equalized broadband CW supercontinua using a novel technique incorporating modulation instability of line broadened pump

Roopa Prakash, Vishal Choudhury, S. Arun, V. R. Supradeepa

Proceedings Volume 10528, 1052817 (2018) https://doi.org/10.1117/12.2289495

KEYWORDS: Supercontinuum generation, Fiber lasers, Continuous wave operation, Supercontinuum sources, Nonlinear optics, Imaging spectroscopy

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Proceedings Article | 22 February 2018 Presentation + Paper

High-power tunable grating-free cascaded Raman fiber lasers

V. Balaswamy, Santosh Aparanji, S. Arun, V. Supradeepa

Proceedings Volume 10528, 1052816 (2018) https://doi.org/10.1117/12.2289453

KEYWORDS: Fiber lasers, Optical filters, Ytterbium, Tunable lasers, Erbium, Wavelength division multiplexing, Resonators, Raman scattering

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Proceedings Article | 20 February 2018 Paper

Spectrally resolved, broadband frequency response characterization of photodetectors using continuous-wave supercontinuum sources

Vishal Choudhury, Roopa Prakash, K. P. Nagarjun, V. R. Supradeepa

Proceedings Volume 10513, 105131O (2018) https://doi.org/10.1117/12.2289494

KEYWORDS: Photodetectors, Continuous wave operation, Supercontinuum sources, Calibration, Spectrum analysis, Pulsed laser operation, Light sources, Optical filters, Modulation, Sensors

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Proceedings Article | 15 February 2018 Presentation + Paper

Observation of a rainbow of visible colors in a near infrared cascaded Raman fiber laser and its novel application as a diagnostic tool for length resolved spectral analysis

Santosh Aparanji, V. Balaswamy, S. Arun, V. R. Supradeepa

Proceedings Volume 10516, 105160M (2018) https://doi.org/10.1117/12.2289817

KEYWORDS: Raman spectroscopy, Visible radiation, Fiber lasers, Cladding, Optical filters, Wave propagation, Near infrared, Harmonic generation, Diagnostics, Light wave propagation

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Proceedings Article | 15 February 2018 Paper

A versatile, C-band spanning, high repetition rate, cascaded four wave mixing based multi-wavelength source

B. S. Vikram, Roopa Prakash, Nagarjun K. P., Shankar Kumar Selvaraja, V. R. Supradeepa

Proceedings Volume 10516, 105161K (2018) https://doi.org/10.1117/12.2289335

KEYWORDS: Modulators, Four wave mixing, Electrooptic modulators, Microwave radiation, Laser scattering, Optical communications, Dense wavelength division multiplexing, Fiber amplifiers

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Proceedings Article | 29 January 2018 Paper

Frequency offset locked dual-carrier excitation of phase-modulated electro-optic frequency combs for bandwidth scaling and nonlinear spectral broadening

K. P. Nagarjun, B. S. Vikram, Roopa Prakash, S. Suparna, Ajay Singh, Shankar Kumar Selvaraja, V. R. Supradeepa

Proceedings Volume 10561, 1056109 (2018) https://doi.org/10.1117/12.2290148

KEYWORDS: Frequency combs, Modulators, Dense wavelength division multiplexing, Semiconductor lasers, Modulation, Electro optics, Linear filtering, Complex systems, Signal generators, Laser stabilization

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Proceedings Article | 14 March 2016 Paper

Generation of tunable, high repetition rate frequency combs with equalized spectra using carrier injection based silicon modulators

Nagarjun K.P., Shankar Kumar Selvaraja, V. Supradeepa

Proceedings Volume 9752, 975218 (2016) https://doi.org/10.1117/12.2208668

KEYWORDS: Modulators, Frequency combs, Silicon, Phase modulation, Absorption, PIN photodiodes, Resonators, Linear filtering, Optical communications, Microwave photonics, Modulation, Refractive index, Wavelength division multiplexing, Phase shift keying

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Proceedings Article | 11 March 2016 Paper

Efficient pump combiner's for fiber lasers and amplifiers

L. Bansal, A. Rosales-Garcia, V. Supradeepa, T. Taunay, C. Headley

Proceedings Volume 9728, 97283C (2016) https://doi.org/10.1117/12.2214622

KEYWORDS: Diodes, Fiber amplifiers, Fiber lasers, Thermal efficiency, Manufacturing, Fiber couplers, Multimode fibers, Structured optical fibers, Polarization, Laser systems engineering, Absorption, Amplifiers

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Proceedings Article | 11 March 2016 Paper

A diode drive mechanism for always resonant pumping with laser diodes without wavelength locking

S. Arun, V. Balaswamy, G. Chayran, P. Vanitha, A. Kumar, V. Supradeepa

Proceedings Volume 9728, 97281S (2016) https://doi.org/10.1117/12.2212576

KEYWORDS: Semiconductor lasers, Diodes, Fiber amplifiers, Reliability, Amplifiers, Absorption, Packaging, Laser systems engineering, Fiber lasers, Optical amplifiers, Optical pumping, Ytterbium, High power lasers

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Proceedings Article | 4 March 2015 Paper

High power cladding mode stripper

L. Bansal, V. Supradeepa, T. Kremp, S. Sullivan, C. Headley

Proceedings Volume 9344, 93440F (2015) https://doi.org/10.1117/12.2079181

KEYWORDS: Cladding, Capillaries, Optical fibers, Signal attenuation, Glasses, Diodes, Borosilicate glass, Metals, Signal processing, Light

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Proceedings Article | 22 March 2013 Paper

High efficiency cascaded Raman fiber laser with output power of 204W at 1480 nm

V. Supradeepa, Jeffrey Nicholson, Clifford Headley, Man Yan, Bera Palsdottir, Dan Jakobsen

Proceedings Volume 8601, 860106 (2013) https://doi.org/10.1117/12.2002620

KEYWORDS: Raman spectroscopy, Fiber lasers, Quantum efficiency, Quantum cascade lasers, Optical filters, Resonators, Fiber amplifiers, Raman scattering, Ytterbium, Wavelength division multiplexing

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Proceedings Article | 27 February 2012 Paper

Cascaded Raman fiber laser at 1480 nm with output power of 104 W

V. Supradeepa, Jeffrey Nicholson, Clifford Headley, Yin-Wen Lee, Bera Palsdottir, Dan Jakobsen

Proceedings Volume 8237, 82370J (2012) https://doi.org/10.1117/12.908539

KEYWORDS: Raman spectroscopy, Fiber lasers, Oscillators, Cladding, Amplifiers, Wavelength division multiplexing, Diodes, Ytterbium, Fiber amplifiers, Quantum cascade lasers

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