Prof. Renu Tripathi Profile

Prof. Renu Tripathi

Professor at Delaware State Univ

SPIE Involvement:

Conference Program Committee | Author | Student Chapter Advisor

Publications (27)

Proceedings Article | 10 June 2024 Presentation

Demonstration of a field-deployable vector magnetometer using synchronous coherent population trapping and feedback compensation mechanism

Renu Tripathi, Gour Pati, Mauricio Pulido

Proceedings Volume PC13028, PC1302801 (2024) https://doi.org/10.1117/12.3013511

KEYWORDS: Magnetometers, Magnetism, Physical coherence, Rubidium, Simulations, Magnetic tracking, Environmental sensing, Chemical species

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Proceedings Article | 10 June 2024 Presentation

Investigations of coherent population trapping and Ramsey interrogations towards cold atom-based clock development

Gour Pati, Renu Tripathi, Gustavo Acosta, Mauricio Pulido

Proceedings Volume PC13028, PC1302802 (2024) https://doi.org/10.1117/12.3013522

KEYWORDS: Clocks, Physical coherence, Chemical species, Vacuum chambers, Vacuum, Rubidium, Raman spectroscopy, Pulse signals, Polarization, Magneto-optics

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Proceedings Article | 13 March 2024 Presentation

Magnetometry using synchronous coherent population trapping in alkali vapor media

Renu Tripathi, Gour Pati, Mauricio Pulido

Proceedings Volume PC12912, PC129122R (2024) https://doi.org/10.1117/12.3003177

KEYWORDS: Magnetometry, Physical coherence, Magnetism, Modulation, Magnetometers, Laser frequency, Spectral response, Sodium, Rubidium, Modulation frequency

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Proceedings Article | 13 March 2024 Presentation

Coherent population trapping and Ramsey interrogations in a cold atomic beam apparatus

Gour Pati, Renu Tripathi, Gustavo Acosta, Mauricio Pulido

Proceedings Volume PC12912, PC1291242 (2024) https://doi.org/10.1117/12.3002917

KEYWORDS: Clocks, Physical coherence, Chemical species, Miniaturization, Magneto-optics, Doppler effect, Beam propagation method

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Proceedings Article | 5 March 2021 Presentation

Synchronous coherent population trapping for remote magnetic field measurement

Renu Tripathi, Raghwinder Grewal, Gour Pati, Mauricio Pulido

Proceedings Volume 11700, 117002U (2021) https://doi.org/10.1117/12.2582433

KEYWORDS: Magnetism, Modulation, Sodium, Luminescence, Chemical species, Mesosphere, Laser induced fluorescence

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Proceedings Article | 5 March 2021 Presentation

Studies of polarization dependent magnetic resonances in rubidium vapor for light ellipticity measurement and vector magnetometry applications

Gour Pati, Raghwinder Grewal, Renu Tripathi

Proceedings Volume 11700, 117002V (2021) https://doi.org/10.1117/12.2582434

KEYWORDS: Magnetism, Polarization, Rubidium, Optical testing, Modulation, In situ metrology, Coating

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Proceedings Article | 4 March 2019 Presentation

Magnetic-field measurements with amplitude-modulated light and intensity correlation technique (Conference Presentation)

Gour Pati, Kevin Heesh, Bruce Barrios, Renu Tripathi, Anthony Yu, Michael Krainak

Proceedings Volume 10934, 1093404 (2019) https://doi.org/10.1117/12.2507057

KEYWORDS: Magnetism, Modulation, Amplitude modulation, Optical pumping, Nonlinear optics, Magneto-optics, Signal detection, Rubidium, Neon, Photodetectors

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Proceedings Article | 4 March 2019 Presentation

Remote magnetometry using fluorescence resonance in sodium vapor (Conference Presentation)

Renu Tripathi, Kevin Heesh, Christiane Ebongue, Lorna Caesar, Gour Pati, Anthony Yu, Michael Krainak

Proceedings Volume 10934, 1093403 (2019) https://doi.org/10.1117/12.2507056

KEYWORDS: Sodium, Luminescence, Magnetism, Chemical species, Amplitude modulation, Mesosphere, Bragg cells, Optical pumping, Modulation, Signal to noise ratio

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Proceedings Article | 20 February 2015 Paper

Multi-pulse detection technique to improve the timing/range resolution in a scanning LADAR system

Yury Markushin, Gour Pati, Renu Tripathi

Proceedings Volume 9342, 93420I (2015) https://doi.org/10.1117/12.2077257

KEYWORDS: LIDAR, Sensors, Target detection, Electronics, Signal detection, Pulsed laser operation, Avalanche photodetectors, Temporal resolution, Laser systems engineering, Signal to noise ratio

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Proceedings Article | 9 June 2014 Paper

A polarimetric scanning LADAR: system development and performance analysis

Yury Markushin, Nicholas Calvano, Gour Pati, Renu Tripathi

Proceedings Volume 9080, 908004 (2014) https://doi.org/10.1117/12.2050469

KEYWORDS: LIDAR, Polarimetry, Polarization, Wave plates, Avalanche photodetectors, Sensors, Imaging systems, Polarizers, Reflectors, Spatial resolution

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SPIE Journal Paper | 5 July 2012 Open Access

Automated Stokesmetric imaging laser radar system

Xue Liu, Shih Tseng, Renu Tripathi, Selim Shahriar

OE, Vol. 51, Issue 7, 073201, (July 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.7.073201

KEYWORDS: Imaging systems, LIDAR, Polarization, Polarimetry, Radar imaging, Laser systems engineering, Cameras, Polysomnography, Roads, Electrical engineering

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Proceedings Article | 10 July 2008 Paper

Facilitizing the Palomar AO laser guide star system

Jennifer Roberts, Antonin Bouchez, John Angione, Rick Burruss, John Cromer, Richard Dekany, Stephen Guiwits, John Henning, Jeff Hickey, Edward Kibblewhite, Daniel McKenna, Anna Moore, Harold Petrie, J. Shelton, Robert Thicksten, Thang Trinh, Renu Tripathi, Mitchell Troy, Tuan Truong, Viswa Velur

Proceedings Volume 7015, 70152S (2008) https://doi.org/10.1117/12.790042

KEYWORDS: Telescopes, Adaptive optics, Stars, Cameras, Camera shutters, Sodium, Laser safety, Laser guide stars, Servomechanisms, Control systems

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SPIE Journal Paper | 1 February 2006

Translation-invariant object recognition system using an optical correlator and a super-parallel holographic random access memory

Alexander Heifetz, John Shen, Jong-Kwon Lee, Renu Tripathi, M.S. Shahriar

OE, Vol. 45, Issue 02, 025201, (February 2006) https://doi.org/10.1117/12.10.1117/1.2172354

KEYWORDS: Holography, Optical correlators, Image filtering, Optical filters, Fourier transforms, Multiplexing, Holograms, Object recognition, Spatial light modulators, Databases

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SPIE Journal Paper | 1 August 2004

Shared-hardware alternating operation of a super-parallel holographic optical correlator and a super-parallel holographic random access memory

Selim Shahriar, Renu Tripathi, Mohammad Huq, John Shen

OE, Vol. 43, Issue 08, (August 2004) https://doi.org/10.1117/12.10.1117/1.1767193

KEYWORDS: Holography, Optical correlators, Multiplexing, Camera shutters, Holograms, Databases, Target recognition, Charge-coupled devices, Sensors, Digital signal processing

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Proceedings Article | 17 June 2004 Paper

Shared-hardware alternating operation of a superparallel holographic optical correlator and a superparallel holographic RAM

Mark Andrews, M. Shahriar, Renu Tripathi, Mohammad Huq, John Shen

Proceedings Volume 5362, (2004) https://doi.org/10.1117/12.543263

KEYWORDS: Holography, Optical correlators, Multiplexing, Camera shutters, Databases, Charge-coupled devices, Target recognition, Image processing, Holograms, Digital signal processing

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Proceedings Article | 14 June 2002 Paper

Phase resolved digital signal processing in optical coherence tomography

Johannes de Boer, Renu Tripathi, Boris Park, Nader Nassif

Proceedings Volume 4619, (2002) https://doi.org/10.1117/12.470460

KEYWORDS: Optical coherence tomography, Digital signal processing, Image resolution, Interferometry, Skin, Point spread functions, Phase shifts, Imaging systems, Superluminescent diodes, Image quality

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Proceedings Article | 19 July 1999 Paper

Wavelet-assisted generalized fringe-adjusted nonzero order joint transform correlator for noise immunity and pattern discrimination

Renu Tripathi, G. Pati, Kehar Singh

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.355017

KEYWORDS: Wavelets, Joint transforms, Optical correlators, Fourier transforms, Target detection, Signal detection, Signal processing, Computer simulations, Interference (communication), Image filtering

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Proceedings Article | 29 April 1999 Paper

Noise immunity and pattern discrimination using wavelet feature-based generalized fringe-adjusted joint transform correlator

Renu Tripathi, G. Pati, Kehar Singh

Proceedings Volume 3729, (1999) https://doi.org/10.1117/12.346795

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Proceedings Article | 29 April 1999 Paper

Polychromatic light-based photorefractive correlator for 3D motion measurement

Arvind Kumar, Renu Tripathi, G. Pati, Kehar Singh

Proceedings Volume 3729, (1999) https://doi.org/10.1117/12.346766

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Proceedings Article | 29 April 1999 Paper

Scheme for implementation of an all-optical non-zero-order joint transform correlator using contrast reversal technique

G. Pati, Renu Tripathi, Kehar Singh

Proceedings Volume 3729, (1999) https://doi.org/10.1117/12.346806

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Proceedings Article | 29 April 1999 Paper

Simple technique for space-variant target detection using fractional correlation

Renu Tripathi, G. Pati, Kehar Singh

Proceedings Volume 3729, (1999) https://doi.org/10.1117/12.346817

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Proceedings Article | 28 April 1999 Paper

Photorefractive correlators for optical pattern recognition and object motion measurement: some improved techniques

Renu Tripathi, Kehar Singh

Proceedings Volume 3666, (1999) https://doi.org/10.1117/12.347983

KEYWORDS: Crystals, Speckle, Laser crystals, Motion measurement, Wavelets, Speckle pattern, Optical correlators, Nonlinear crystals, Optical pattern recognition, Image filtering

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Proceedings Article | 28 April 1999 Paper

Image feature extraction using a joint-transform-correlator-based Haar-wavelet processor

Renu Tripathi, G. Pati, Kehar Singh

Proceedings Volume 3666, (1999) https://doi.org/10.1117/12.347984

KEYWORDS: Wavelets, Image processing, Image analysis, Feature extraction, Binary data, Computer programming, Computer simulations, Image resolution, Optical correlators, Spatial light modulators

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SPIE Journal Paper | 1 November 1998

Three-dimensional displacement measurement using chirp modulation in a photorefractive correlator

Renu Tripathi, G. Pati, Arvind Kumar, Kehar Singh

OE, Vol. 37, Issue 11, (November 1998) https://doi.org/10.1117/12.10.1117/1.601886

KEYWORDS: Speckle, Speckle pattern, Modulation, Motion measurement, Fourier transforms, Crystals, Optical engineering, Diffusers, Photorefractive correlators, 3D metrology

SPIE Journal Paper | 1 November 1998

Object tilt measurement using a photorefractive speckle correlator: theoretical and experimental analysis

Renu Tripathi, G. Pati, Arvind Kumar, Kehar Singh

OE, Vol. 37, Issue 11, (November 1998) https://doi.org/10.1117/12.10.1117/1.601887

KEYWORDS: Speckle, Speckle pattern, Optical correlators, Fourier transforms, Diffusers, Phase modulation, Crystals, Optical engineering, Fringe analysis, Photography

SPIE Journal Paper | 1 July 1998

Photorefractive joint transform correlator using incoherent erasure in two-and four-wave mixing geometries in a BaTiO3 crystal

Renu Tripathi, G. Pati, Kehar Singh

OE, Vol. 37, Issue 07, (July 1998) https://doi.org/10.1117/12.10.1117/1.601718

KEYWORDS: Crystals, Optical correlators, Joint transforms, Modulation, Signal to noise ratio, Laser crystals, Fourier transforms, Computer simulations, Phase conjugation, Nonlinear crystals

SPIE Journal Paper | 1 February 1998

Pattern discrimination using a bank of wavelet filters in a joint transform correlator

Renu Tripathi, Kehar Singh

OE, Vol. 37, Issue 02, (February 1998) https://doi.org/10.1117/12.10.1117/1.601722

KEYWORDS: Wavelets, Fourier transforms, Optical filters, Image filtering, Optical correlators, Joint transforms, Digital signal processing, Target recognition, Image processing, Optical engineering

Showing 5 of 27 publications

Conference Committee Involvement (6)

Quantum Sensing, Imaging, and Precision Metrology III

25 January 2025 | San Francisco, California, United States

Quantum Sensing, Imaging, and Precision Metrology II

27 January 2024 | San Francisco, California, United States

Quantum Sensing, Imaging, and Precision Metrology

28 January 2023 | San Francisco, California, United States

Optical and Quantum Sensing and Precision Metrology II

22 January 2022 | San Francisco, California, United States

Optical and Quantum Sensing and Precision Metrology

6 March 2021 | Online Only, California, United States

Showing 5 of 6 Conference Committees

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