David Howard Reitze (born 6 January 1961) is an American

laser A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word ''laser'' originated as an acronym for light amplification by stimulated emission of radi ...

physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate cau ...

who is professor of

physics Physics is the scientific study of matter, its Elementary particle, fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge whi ...

at the

University of Florida The University of Florida (Florida or UF) is a public university, public land-grant university, land-grant research university in Gainesville, Florida, United States. It is a senior member of the State University System of Florida and a preem ...

and served as the scientific spokesman of the Laser Interferometer Gravitational-Wave Observatory ( LIGO) experiment in 2007-2011. In August 2011, he took a leave of absence from the

to be the Executive Director of LIGO, stationed at the California Institute of Technology, Pasadena,

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

. He obtained his BA in 1983 from

Northwestern University Northwestern University (NU) is a Private university, private research university in Evanston, Illinois, United States. Established in 1851 to serve the historic Northwest Territory, it is the oldest University charter, chartered university in ...

, his PhD in physics from the

University of Texas at Austin The University of Texas at Austin (UT Austin, UT, or Texas) is a public university, public research university in Austin, Texas, United States. Founded in 1883, it is the flagship institution of the University of Texas System. With 53,082 stud ...

in 1990, and had positions at Bell Communications Research and

Lawrence Livermore National Laboratory Lawrence Livermore National Laboratory (LLNL) is a Federally funded research and development centers, federally funded research and development center in Livermore, California, United States. Originally established in 1952, the laboratory now i ...

, before taking his faculty position at the

. He is a Fellow of the

American Physical Society The American Physical Society (APS) is a not-for-profit membership organization of professionals in physics and related disciplines, comprising nearly fifty divisions, sections, and other units. Its mission is the advancement and diffusion of ...

, the Optical Society, and the

American Association for the Advancement of Science The American Association for the Advancement of Science (AAAS) is a United States–based international nonprofit with the stated mission of promoting cooperation among scientists, defending scientific freedom, encouraging scientific responsib ...

. An expert in ultrafast optics and laser

spectroscopy Spectroscopy is the field of study that measures and interprets electromagnetic spectra. In narrower contexts, spectroscopy is the precise study of color as generalized from visible light to all bands of the electromagnetic spectrum. Spectro ...

, he now specialises in laser-based interferometric

gravitational wave Gravitational waves are oscillations of the gravitational field that Wave propagation, travel through space at the speed of light; they are generated by the relative motion of gravity, gravitating masses. They were proposed by Oliver Heaviside i ...

detection. This includes the development of new interferometer topologies for next generation gravitational wave detectors, investigations of thermal loading in passive and active optical elements, development of high power optical components, and the design, construction and operation of the LIGO interferometers. As Director of the LIGO Laboratory, one of his main efforts has been planning the proposed extension of the LIGO network of detectors to include one in

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

. In February 2016, he, as executive director of LIGO, announced that the first direct gravitational wave observation had occurred on 14 September 2015 by the LIGO Scientific Collaboration and Virgo Collaboration using the LIGO detectors in Hanford, WA and Livingston, LA. Reitze, along with other former and present spokespersons of the LIGO Scientific Collaboration, was awarded the National Academy of Sciences Award for Scientific Discovery in 2017. In 2019, Reitze co-edited a book with Peter Saulson and Hartmut Grote on the current state of gravitational-wave detectors and future upgrades. The book discusses about both LIGO and Virgo interferometers.

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* * Living people 21st-century American physicists Gravitational-wave astronomy 1961 births {{US-physicist-stub