Alfred Kastler attends the prestigious École Normale Supérieure in Paris. Eugène Bloch introduces Kastler to the concepts of Bohr's atom and quantum physics. Kastler reads with interest Sommerfeld's book on atomic structure and spectral lines. This book introduces him to the principle of the conservation of momentum applied by Rubinowicz to the exchange of energy between atoms and radiation. This principle influences the whole of Kastler's research.

Alfred Kastler is appointed assistant to Pierre Daure at the Bordeaux Faculty of Science. Daure initiates him into experimental spectroscopy. Kastler earns his Ph.D. in 1936. For many years optical spectroscopy is his field of research, particularly he works on atomic fluorescence and Raman spectroscopy.

Alfred Kastler works as university professor at University of Bordeaux as a replacement for Pierre Daure.

Alfred Kastler develops optical pumping, a system using light or radio waves to excite atoms, which then emit coherent electromagnetic waves. This marks an important step toward the development of the maser and the laser.

Alfred Kastler receives the Nobel Prize in Physics "for the discovery and development of optical methods for studying Hertzian resonances in atoms".

Alfred Kastler teaches Physics at Lycée of Mulhouse.

Alfred Kastler dies in Bandol.

Alfred Kastler teaches as Francqui Professor at the University of Louvain.

Alfred Kastler is born in Guebwiller Alsace, German Empire (now France).

Alfred Kastler teaches at Bordeaux.

Alfred Kastler retires from École Normale Supérieure and he is appointed director of research at the French National Centre of Scientific Research.

Alfred Kastler is appointed lecturer at Blaise Pascal University, Clermont-Ferrand. In I937 he becomes interested in the luminescence of sodium atoms in the upper atmosphere.

Alfred Kastler teaches at Colmar.

Alfred Kastler attends Lycée Bartholdi in Colmar. Here his mathematics teachers waken his interest in science.

Kastler returns at École Normale Supérieure at the instance of G. Bruhat to become director of the Hertzian spectroscopy group. Kastler obtains a chair in 1952. With Brossel, Kastler proposes the "double resonance method", which combines optical resonance with magnetic resonance. This method uses a light beam and a radio frequency field to investigate atoms as they move to a higher energy level and then back to a state of lower energy. This leads Kastler to develop later the optical pumping.