Sarthak Dash

I am a currently a Ph.D. student at Centre for Nano Science and Engineering, Indian Institute of Science Bangalore, specializing in High power Fiber lasers and Nonlinear Optics. My research focuses on Raman fiber lasers. It utilizes Raman Scattering phenomena in silica fibers, allowing to transfer power from fiber lasers emitting at lower wavelengths, typically around 1060 nm, to higher wavelengths. Thus, Raman fiber lasers helps in achieving laser power at any wavelengths in the range of 1 – 2 µm. Frequency doubling of these versatile Raman laser sources can generate light in visible wavelengths that have wide applications in imaging, microscopy, and material processing.

I have designed and build high power fiber lasers at 1060 nm and Raman fibers lasers, to convert the power to higher wavelengths. I have worked on various architectures and techniques to increase the efficiency of visible conversion of Raman fibers lasers without compromising on its versatility. To achieve this, I have designed and built various free-space optical systems to control the properties of the Raman lasers. Finally, I have also built the setup for frequency doubling to visible and worked with various available nonlinear crystals.

I have also worked with various Industry partners of our department translating our research work to impactful technologies.