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Dr Amitava Sen Gupta received the M.Sc. and Ph.D. degrees in Physics from the University of Delhi, India, in 1974 and 1980, respectively. His Ph.D. work involved experimental and theoretical studies of traveling ionospheric disturbances using satellites. He joined the CSIR – National Physical Laboratory in January 1979. Presently he is a Scientist-H/ Outstanding Scientist and the Head of the Time & Frequency Division.
Dr Sen Gupta’s research interests in the early years at NPL involved studies of upper atmosphere and VLF radio propagation studies. Subsequently, he was engaged in research on extremely accurate time synchronization using the Indian domestic satellite INSAT. This work has led to the INSAT time broadcast service, which has been widely used in India.
During the eighties Dr. Sen Gupta was associated with the Indian Antarctic research program. He was one of the youngest members of the first Indian Antarctic Expedition in 1981-82, where he performed experiments related to radio propagation and Ozone studies. He was a member again of the second Indian expedition in 1982-83 and finally in 1988-89 he was selected to lead the eighth Indian Antarctic Expedition, in which he and his team members set up the permanent Indian Antarctic Station ‘Maitri’.
In recent years his group has been mainly engaged with research and development of primary Cesium (Cs) atomic frequency standards, ultra precision satellite time transfer techniques and a new generation of microwave synthesizers. These highly accurate atomic standards are known as Cs fountains and have an accuracy of about 10-15. The Cs fountain, recently built at NPL is among about ten such devices worldwide. His group is also planning to develop optical frequency standards based on single trapped ions in the coming years
Dr. Sen Gupta is a Fellow of the National Academy of Sciences, India, Fellow of the Institution of Electronic and Telecom Engineers (IETE), India and a Senior Member of the IEEE, USA. He was awarded the O. P. Bhasin Foundation award for Science and Technology for the year 2002 for outstanding contributions in the field of Electronics and Information Technology.
