Experience

NanoLund

• Sweden
• Research Services
• 1 - 100 Employee

• Postdoctoral Researcher

  • Sep 2020 - Present

  PL Microscopy: PLQY studies of organo-metal halide perovskites. PL Microscopy: PLQY studies of organo-metal halide perovskites.



Indian Institute of Technology, Bombay

• India
• Higher Education
• 700 & Above Employee

• Postdoctoral Research Fellow

  • Aug 2017 - Sep 2019

  Optical transmission spectroscopy of metal (gold and silver) nano-slits. Optical transmission spectroscopy of metal (gold and silver) nano-slits.



Heriot-Watt University

• United Kingdom
• Higher Education
• 700 & Above Employee

• Research Associate

  • Jan 2016 - May 2016

• PhD Student

  • Jan 2013 - May 2016

  Keywords: Interferometry, Four Wave Mixing (FWM), Negative Refraction and Phase Conjugation, multilayer Graphene, Coherent Perfect Absorption (CPA), Phase-Contrast Imaging'Coherent Optical Interactions in Graphene Multilayers'The research pursued during the PhD dealt with the generation, control and modulation of light interactions in two-dimensional materials, specifically unpatterned, subwavelength graphene multilayers using the process of Coherent Perfect Absorption (CPA). Highly inefficient light–matter coupling at the nanoscale and the universal limit of absorption in an ultrathin film (50%) are the challenges of using 2D materials in optics. My work addressed this problem in the way of a study in new geometries for efficient linear and nonlinear light interactions using graphene films.The nonlinear processes of Optical Phase-Conjugation and negative refraction were demonstrated using a `phase-dependent' approach for realising optical nonlinearity in a graphene sample. Additionally, the CPA arrangement allows for a coherent modulation of the nonlinear signals with a modulation contrast of ~100 %, thus providing a method for effectively generating and also optically modulating nonlinear excitations in graphene multilayers. Three alternative geometries for enabling nonlinear interactions in the two-dimensional graphene sample were explored.As an interesting consequence of this research, the nonlinear imaging technique of ‘phase-contrast imaging’ was demonstrated using the 2D optical nonlinearity, using a near-IR wavelength. Show less



Tata Institute of Fundamental Research

• Research Services
• 200 - 300 Employee

• Project Student

  • Jan 2012 - May 2012

  The project involved z-scan experiments on glass samples (BK7 and ion-doped fused silica) using ultrashort pulses (30, 120 fs) to determine their non-linear absorption coefficients. A study of the chirp of femtosecond pulses produced by an Optical Parametric Amplifier (OPA) was also performed. The project involved z-scan experiments on glass samples (BK7 and ion-doped fused silica) using ultrashort pulses (30, 120 fs) to determine their non-linear absorption coefficients. A study of the chirp of femtosecond pulses produced by an Optical Parametric Amplifier (OPA) was also performed.



Centre for Atomic and Molecular Physics

• Manipal, India

• Student

  • 2010 - 2012

  MSc in Photonics MSc in Photonics



Poornaprajna College, Udupi

• Udupi, India

• Student

  • 2004 - 2009

  B.Sc., Computer Science B.Sc., Computer Science