Currently, Dr. Mondal is working as an Assistant Professor at the Department of Applied Physics, Defence Institute of Advanced Technology, Pune India. His broad research area is Plasmonic Photoconductive antenna, high electric field THz generation and detection, development of Ultrafast fiber and solid-state laser oscillator and amplifiers and its applications. He worked as a Research Assistant Professor at SRM Institute of Science and Technology, Kattankulathur, India for three years. At Accelerator Science and Technology Centre, STFC Daresbury Laboratory, United Kingdom as a Rutherford International Fellow, he worked on the experimental optimization of high-field multi-cycle terahertz pulses for application of appropriate structures, including; terahertz waveguides, terahertz photonic structures and resonant cavities. In his first postdoctoral study at IPE, Czech Republic, he developed different ultrafast, high power mode-locked fiber lasers and its amplifier systems with different ytterbium, erbium, thulium and chalcogenide fibers to produce broadband near-infra-red and mid-infra-red frequency sources by frequency mixing processes. He completed Ph.D. from the Indian Institute of Technology Kharagpur in 2015 with a specialization of 'Ultrafast Lasers and Nonlinear Optics'. He published more than 40 peer review articles and two book chapters. He is life member of OSI, ILA and Young Scientist member of OPTICA.