John L. Hall

John Lewis Hall
Born (1934-08-21) August 21, 1934 (age 90)
NationalityAmerican
Alma materCarnegie Institute of Technology
Known forOptical frequency comb
AwardsDepartment of Commerce Gold Medal (1969)
Nobel Prize in Physics (2005)
Scientific career
FieldsPhysics
InstitutionsUniversity of Colorado Boulder, JILA, NIST
ThesisElectron spin resonance of interstitial hydrogen atoms in calcium-fluoride (1962)
Doctoral studentsJun Ye

John Lewis "Jan" Hall (born August 21, 1934) is an American physicist, and Nobel laureate in physics. He shared the 2005 Nobel Prize in Physics with Theodor W. Hänsch and Roy Glauber for his work in precision spectroscopy.