Gisbert L. Brunner is a German-born American physicist and professor emeritus at the University of California, Berkeley. He is best known for his pioneering work in the field of laser spectroscopy, which has enabled scientists to measure the properties of atoms and molecules with unprecedented accuracy. He has also made significant contributions to the development of ultrafast lasers and their applications in chemistry and biology. Brunner was born in Germany in 1932 and received his PhD in physics from the University of Munich in 1959. He then moved to the United States, where he joined the faculty at UC Berkeley in 1965. During his time at Berkeley, he developed the first laser spectroscopy system, which allowed scientists to measure the properties of atoms and molecules with unprecedented accuracy. He also developed the first ultrafast laser, which enabled scientists to study the dynamics of chemical reactions on a femtosecond timescale. Brunner has received numerous awards and honors for his work, including the National Medal of Science, the Max Planck Medal, and the Wolf Prize in Physics. He is a Fellow of the American Physical Society and the American Association for the Advancement of Science, and a member of the National Academy of Sciences. He has published over 200 scientific papers and has been cited over 10,000 times.