Bachelor of Science with honors, Burdwan University, India, 1965. Master of Science, Burdwan University, India, 1965. Doctor of Philosophy, Southampton University, England, 1973.
Lecturer Burdwan University, 1966-1976, reader, 1976-1984, professor, 1984—2004. Research professor Vivekanada University, Howrah, India, since 2005. Indo-Union of the Soviet Socialist Republics Exchange fellow, Union of the Soviet Socialist Republics, 1984, 90, 92.
Development fellow A.C.U., Melbourne, Australia, 1993. Consultant Electrotech. Laboratory, Tsukuba, Japan, 1995-2000.
Advisor Infrared Physics and Technology, United Kingdom, since 1995. Invited speaker in field.
Believer Advaitya Vedanta, writing science and religion. Fellow Institute of Physics (London). Member Institute of Electrical and Electronics Engineers (senior ), Indian Laser Association (life).
Married Rina Das, August 1975.