Thangavel Thevar

Research output

Research output per year 1991 1999 2007 2023 2023

• 14 Article
• 8 Published conference contribution
• 2 Other
• 2 Conference article
• 3 More
  • 1 Other contribution
  • 1 Literature review
  • 1 Patent

Research output per year

Research output per year

Search results

• 2023

  An Ultracompact Underwater Digital Holographic Camera for Study of Marine Microorganisms

  Thevar, T., Eerkes-Medrano, D., Burns, N., Ockwell, M. & Watson, J., 12 Sept 2023, OCEANS 2023-Limerick. IEEE Explore, p. 1-8 8 p.

  Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

• Machine-Learning-based Size Estimation of Marine Particles in Holograms Recorded by a Submersible Digital Holographic Camera

  Liu, Z., Giering, S., Thevar, T., Burns, N., Ockwell, M. & Watson, J., 12 Sept 2023, OCEANS 2023 - Limerick. IEEE Explore, p. 1-8 8 p.

  Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

• RamaCam: Autonomous in-situ monitoring system of marine particles by combining holography and Raman spectroscopy

  Takahashi, T., Liu, Z., Thevar, T., Burns, N., Sangekar, M., Lindsay, D., Watson, J. & Thornton, B., 24 Apr 2023, 2023 IEEE International Symposium on Underwater Technology: UT 2023. Institute of Electrical and Electronics Engineers Inc., 5 p. 9.3

  Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

  • Holography 100%
  • holography 99%
  • Raman spectroscopy 94%
  • monitoring system 68%
  • in situ 43%

• An ultracompact underwater pulsed digital holographic camera with rapid particle image extraction suite

  Thevar, T., Burns, N., Ockwell, M. & Watson, J., Apr 2023, In: IEEE Journal of Oceanic Engineering. 48, 2, p. 566-576 11 p.

  Research output: Contribution to journal › Article › peer-review

  • Holograms 100%
  • Cameras 51%
  • Plankton 41%
  • Microplastic 20%
  • Field programmable gate arrays (FPGA) 19%
  1 Citation (Scopus)

• Advanced subsea imaging technique of digital holography: In situ measurement of marine microscale plankton and particles

  Liu, Z., Giering, S., Takahashi, T., Thevar, T., Takeuchi, M., Burns, N., Thornton, B., Watson, J. & Linsday, D., Mar 2023, 2023 IEEE International Symposium on Underwater Technology, UT 2023. Institute of Electrical and Electronics Engineers Inc.

  Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

  • Plankton 100%
  • plankton 94%
  • Holography 83%
  • holography 83%
  • in situ measurement 66%

• Multimodal Image and Spectral Feature Learning for Efficient Analysis of Water-Suspended Particles

  Takahashi, T., Liu, Z., Thevar, T., Burns, N., Lindsay, D., Watson, J., Mahajan, S., Yukioka, S., TANAKA, SHUHEI., NAGAI, YUKIKO. & Thornton, B., 27 Feb 2023, In: Optics Express. 31, 5, p. 7492-7504 13 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • learning 100%
  • water 52%
  • oceans 33%
  • optical measurement 30%
  • Raman spectroscopy 26%
• 2021

  Digital In-Line Holography for Large-Volume Analysis of Vertical Motion of Microscale Marine Plankton and Other Particles

  Liu, Z., Takahashi, T., Lindsay, D., Thevar, T., Sangekar, M., Watanabe, H. K., Burns, N., Watson, J. & Thornton, B., 1 Oct 2021, In: IEEE Journal of Oceanic Engineering. 46, 4, p. 1248 - 1260 13 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Plankton 100%
  • Holography 83%
  • Microscopes 38%
  • Camera shutters 30%
  • Continuous wave lasers 29%
  3 Citations (Scopus)

  4 Downloads (Pure)

• Unsupervised feature learning and clustering of particles imaged in raw holograms using an autoencoder

  Liu, Z., Thevar, T., Takahashi, T., Burns, N., Yamada, T., Sangekar, M., Lindsay, D., Watson, J. & Thornton, B., 1 Oct 2021, In: Journal of the Optical Society of America A: Optics and Image Science, and Vision. 38, 10, p. 1570-1580 11 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Holograms 100%
  • learning 79%
  • Shape 47%
  • Time 26%
  • platforms 20%
  1 Citation (Scopus)

  4 Downloads (Pure)
• 2020

  Comparison of Region Proposal Methods for Marine Holograms

  Liu, Z., Takahashi, T., Thevar, T., Lindsay, D., Burns, N., Watson, J. & Thornton, B., 5 Oct 2020, 2020 Global Oceans 2020: Singapore - U.S. Gulf Coast. Institute of Electrical and Electronics Engineers Inc., 5 p. 9389216. (2020 Global Oceans 2020: Singapore - U.S. Gulf Coast).

  Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

  • Holograms 100%
  • Holography 68%
  • proposals 68%
  • Raman spectroscopy 65%
  • Support vector machines 58%

• Identification of microplastics in a large water volume by integrated holography and Raman spectroscopy

  Takahashi, T., Liu, Z., Thevar, T., Burns, N., Mahajan, S., Lindsay, D., Watson, J. & Thornton, B., 10 Jun 2020, In: Applied Optics. 59, 17, p. 5073-5078 6 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Microplastic 100%
  • Holography 82%
  • Raman spectroscopy 78%
  • pellets 59%
  • holography 56%
  28 Citations (Scopus)

  3 Downloads (Pure)
• 2016

  Identification of British one pound counterfeit coins using laser-induced breakdown spectroscopy

  Appleby, A. & Thevar, T., 21 Apr 2016, In: Optical Engineering. 55, 4, p. 1-7 7 p., 044104.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Laser induced breakdown spectroscopy 100%
  • laser-induced breakdown spectroscopy 73%
  • Pulsed lasers 41%
  • Spectrometers 35%
  • entry 32%
  5 Citations (Scopus)

  10 Downloads (Pure)
• 2014

  Fluorescence Spectroscopy of Rhodamine 6G: Concentration and Solvent Effects

  Zehentbauer, F. M., Moretto, C., Stephen, R., Thevar, T., Gilchrist, J. R., Pokrajac, D., Richard, K. L. & Kiefer, J., 5 Mar 2014, In: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy. 121, p. 147-151 5 p.

  Research output: Contribution to journal › Article › peer-review

  • Fluorescence spectroscopy 100%
  • Dimethyl sulfoxide 74%
  • rhodamine 69%
  • Rhodamine 6G 68%
  • Fluorescence 67%
  154 Citations (Scopus)
• 2013

  Preliminary results in the development of a multi-colour pulsed laser for holography

  Thevar, T. & Watson, J., 2 Dec 2013, 2013 3DTV Vision Beyond Depth (3DTV-CON). IEEE Explore, p. 1-3 3 p.

  Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

  • holography 100%
  • pulsed lasers 88%
  • color 72%
  • wavelengths 48%
  • YAG lasers 23%

• Raman Converting laser systems (US 8,494,012 B2)

  Thevar, T., Boczar, B., Heller, D., Klosner, M. & Pryor, B., 23 Jul 2013, IPC No. US Patent, Patent No. 8,494,012 B2

  Research output: Patent

  6 Downloads (Pure)
• 2008

  Holographic metrology for study and evaluation of vibration in complex structures

  Webster, J. M., Thevar, T. & Schmidt, T., Apr 2008, In: Journal of Imaging Science. 56, 2, p. 107-112 6 p.

  Research output: Contribution to journal › Article

  • Holographic interferometry 100%
  • Lasers 93%
  • Ruby 93%
  • Holograms 84%
  • Laser pulses 80%
• 2007

  Remote optical non-destructive inspection techniques for metal and composite structures

  Webster, J. & Thevar, T., Dec 2007, In: Journal of Nondestructive Evaluation. 26, 2-4, p. 71-78 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Composite structures 100%
  • Acoustic devices 82%
  • Aluminum 75%
  • Inspection 74%
  • Lasers 74%
  5 Citations (Scopus)

• 3-d time-varying scene capture technologies: A survey

  Stoykova, E., Alatan, A. A., Benzie, P. W., Grammalidis, N., Malassiotis, S., Ostermann, J., Piekh, S., Sainov, V., Theobalt, C., Thevar, T. & Zabulis, X., Nov 2007, In: IEEE transactions on circuits and systems for video technology. 17, 11, p. 1568-1586 19 p.

  Research output: Contribution to journal › Literature review

  • Cameras 100%
  • Holography 49%
  • Motion tracking 43%
  • Motion analysis 41%
  • Light sources 38%
  82 Citations (Scopus)

• Advances in Lidar Transmitter Sources for Ocean-Atmosphere Remote Sensing

  Thevar, T., Boczar, B., Rousseva, I., Walling, J. C. & Heller, D., Jun 2007, OCEANS 2007 - Europe. IEEE Explore, p. 1-4 4 p.

  Research output: Chapter in Book/Report/Conference proceeding › Other contribution

  • Optical radar 100%
  • Remote sensing 83%
  • Transmitters 66%
  • Wavelength 47%
  • Laser resonators 46%
• 2006

  Diode pumped, continuous wave Tm:YAlO3 laser

  Thevar, T. & Barnes, N., May 2006, In: Applied Optics. 45, 14, p. 3352-3355 3 p.

  Research output: Contribution to journal › Article › peer-review

  • continuous radiation 100%
  • Diodes 99%
  • Lasers 81%
  • diodes 81%
  • Quantum efficiency 55%
  18 Citations (Scopus)
• 2004

  Simultaneous visible and near-infrared emission from a pulse-stretched alexandrite laser source

  Thevar, T., Boczar, B., Kramer, N., Pryor, B., Frost, R. & Rousseva, I., Jan 2004. 8 p.

  Research output: Contribution to conference › Other
• 2002

  Efficient, broadly tunable deep UV and mid-IR solid-state laser source

  Thevar, T., Boczar, B., Frost, R., Pryor, B., Kramer, N., Walling, J. C., Mirov, S. B. & Fedorov, V. V., May 2002. 3 p.

  Research output: Contribution to conference › Other
• 2000

  New computational remote acoustic impact NDT system for the inspection of composite materials and detection and quantification of corrosion

  Mew, J. M., Webster, J. M., Thevar, T. & Schmidt, T., Jan 2000, In: Insight: Non-Destructive Testing and Condition Monitoring. 42, 1, p. 22-25 4 p.

  Research output: Contribution to journal › Article › peer-review

  • Relaxation Frequency 100%
  • Shock Wave 89%
  • Shock waves 72%
  • Nondestructive examination 67%
  • Surface relaxation 63%
  5 Citations (Scopus)

• Determination of dynamic velocity and strain using wide field holographic interferometry - Verification

  Motriuk, R. W., Schmidt, T., Webster, J. & Thevar, T., 2000, Integrity and Corrosion; Offshore Issues; Pipeline Automation and Measurement; Rotating Equipment. American Society of Mechanical Engineers(ASME), p. 1397-1405 9 p. (Proceedings of the Biennial International Pipeline Conference, IPC; vol. 2).

  Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

  • Holographic Interferometry 100%
  • Holographic interferometry 92%
  • Velocity 48%
  • Strain 40%
  • Pipe 24%
  2 Citations (Scopus)
• 1999

  Non-contact laser based computation method of NDE of composites and other structures

  Thevar, T. M., Webster, J. M., Kalshteyn, M. & Mew, J. M., 3 Mar 1999, In: Proceedings of SPIE - The International Society for Optical Engineering. 3585, p. 219-225 7 p.

  Research output: Contribution to journal › Conference article › peer-review

  • Non-contact 100%
  • Laser 78%
  • Defects 62%
  • Composite 55%
  • Lasers 47%
  1 Citation (Scopus)

• A new computational imaging method for the remote detection and quantification of hidden corrosion

  Webster, J. M., Thevar, T. & Mew, J. M., 1999, In: Imaging Science Journal. 47, 1, p. 37-41 5 p.

  Research output: Contribution to journal › Article › peer-review

  • Acoustics 100%
  • Imaging techniques 93%
  • Corrosion 92%
  • Metals 78%
  5 Citations (Scopus)

• Application of holography to acoustically induced vibrational fields

  Motriuk, R. W., Webster, J., Thevar, T. & Schmidt, T., 1999, In: American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. 389, p. 331-336 6 p.

  Research output: Contribution to journal › Article › peer-review

  • Holography 100%
  • Holograms 96%
  • Ducts 70%
  • Pipe 53%
  • Acoustic fields 30%
  3 Citations (Scopus)
• 1996

  Longitudinal mode selection in a dye Q-switched ruby laser: a comparison between theoretical and experimental results

  Thevar, T. M. & Watson, J., 1996, Proceedings of SPIE - The International Society for Optical Engineering. Mei, S-S. & Truesdell, K. A. (eds.). p. 60-69 10 p. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 2889).

  Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

  • Ruby 100%
  • Laser modes 95%
  • Dyes 91%
  • Laser 83%
  • ruby lasers 83%
  2 Citations (Scopus)
• 1992

  Operational characteristics of a dye Q-switch for a pulsed ruby laser

  Thevar, T. & Watson, J., Dec 1992, In: Optics and Laser Technology. 24, 6, p. 323-327 5 p.

  Research output: Contribution to journal › Article › peer-review

  • Ruby 100%
  • ruby lasers 83%
  • Dyes 75%
  • dyes 57%
  • pulsed lasers 57%
  2 Citations (Scopus)
• 1991

  Design requirements of a pulsed ruby laser for an underwater holographic camera

  Thevar, T., Kilpatrick, J. M. & Watson, J., 1991, In: IEE Conference Publication. 342, p. 231-233 3 p.

  Research output: Contribution to journal › Conference article › peer-review

  • Ruby 100%
  • Lasers 50%
  • Switches 47%
  • Cameras 47%
  • Dyes 25%