Publications and talks
A full list of publications can be found on Google Scholar. A selected few papers and conference talks are listed below.
T. Shanavas, M. B. Grayson, B. Xu, M. Zohrabi, W. Park, and J. T. Gopinath, "Cascaded forward Brillouin lasing in a chalcogenide whispering gallery mode microresonator." APL Photonics 7, no. 11: 116108 (2022)This is the first report of cascaded forward stimulated Brillouin scattering in a microresonator platform. We observed lasing at a sub-mW power. We demonstrated a new scheme for Brillouin lasing in low-quality (Q~105) optical cavities.
Conference Talks
T. Shanavas, M. B. Grayson, M. Zohrabi, W. Park, and J. T. Gopinath, "Cascaded Forward Brillouin Scattering in a Chalcogenide Microsphere," in Conference on Lasers and Electro-Optics, paper STh5F.7 (2022)T. Shanavas, R. R. McLeod, M. E. Siemens, and J.T. Gopinath, "Comparison of Coherent and Incoherent Donut Beams for Deep Tissue STED Microscopy," in Conference on Lasers and Electro-Optics, paper SM1I.2 (2023)
Undergraduate Thesis - July 2018 to November 2018
Magnetometry using Nitrogen-Vacancies in Diamond
I worked on designing an experimental setup for sensing weak magnetic fields at micron-scale resolution using nitrogen-vacancy (NV) centers in diamonds, under the guidance of Prof. Pradeep Sarin and Prof. Kasturi Saha at the Indian Institute of Technology, Bombay.
Making the RF field more uniform by replacing the current loops used perviously in the group with a newly designed microstrip antenna, I am able to use 57 percent more nitrogen-vacancies, corresponding to an expected shot-noise limited SNR improvement of 21 percent. Report
Internship - Tyndall National Institute, Ireland - May to July 2018
I developed machine learning techniques to extend the reach of optical fiber communication channels, under the guidance of Dr Cleitus Antony and Dr Paul Townsend. Using a deep neural network, I was able to demonstrate 20 Gbps transmission across 30 Km fibre, over hardware designed for 10 Gbps. Report.
Internship - KEK: High Energy Accelerator Research Organisation, Japan - November to December 2017
I designed an FPGA-based controller for an analog Silicon pixel detector for detecting energetic subatomic particles under the guidance of Dr Tetsuichi Kishishita and Prof Manobu Tanaka. The controller managed the trigger mechanism, signal conditioning circuits and data readout of the analog IC. This enabled us to identify the usable linear region and appropriate bias voltages for the analog IC and verify it against the design target. Report
Internship - University of Alberta - May 2017 to July 2017
I theoretically described the surface plasmon resonances in a Titanuim Nitride coated Titanium Dioxide nanotube metasurface, under the guidance of Prof. Karthik Shankar. The model agreed well with the experimental results. The model and results are published here