Special lectures on Information Optics by Prof. Kehar Singh

A series of lectures on ‘Information Optics’ by Prof. Kehar Singh, SS Bhatnagar Awardee and Honorary Distinguished Research Professor at NCU, was organized by the Department of Applied Sciences . The first lecture was held on 21 April 2016 and the second in continuation was held on 5 May 2016. The topic of Information Optics is a part of the curriculum of first year CSE students.   The lectures were attended by 50 CSE students of 1st year and faculty members of Physics.

During the first session, Prof. Singh emphasized 21st century as the century of optics in which optical information technology is going to play a major role.  He compared the optical information technology to electronic information technology as that between optical computers and electronic computers. He also explained the fundamental concepts of optical information technology in which Optical Fourier Transform (OFT) of the object domain is obtained using optics into the Spatial Fourier Frequency Domain and vice-versa.  

During the second lecture, Prof. Kehar Singh talked about Liquid Crystal Spatial Light Modulator (SLM) and explained about optically addressable SLM using photorefractive crystals and electrically addressable E-SLM using liquid crystals. He explained the working principle of NLC – SLM using many intricate diagrams. Many applications of E-SLM were also mentioned in the lecture.