The Department was started in November 1957.Dr.K.S.Chandrasekar.PhD was the Head of the Department at that time.
Dr.A.V.Lakshmanan PhD joined the Department in August 1958 and became the Head of the Department in April 1962. He retired in August 2006 as Director (Administration) and continuing his services as Adviser.
Dr.I.S.Balakrishnan PhD, joined the Institute in April 1965 and retired as Chairman, Physical Sciences in April 2007 and continuing his services as Consultant Medical Physicist.
Dr.N.Vivekanandan PhD joined the Institute in July 1993 and working as Head of the Department since May 2007.