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Peer reviewed Peer reviewed
Hall, J. L. – Science, 1978
Traces the development of stabilized lasers from the Massachusetts Institute of Technology passive-stabilization experiments of the early 1960s up through the current epoch of highly stabilized helium-neon and carbon dioxide and continuous wave dye lasers. (Author/HM)
Descriptors: Lasers, Measurement, Optics, Physics
Peer reviewed Peer reviewed
Patel, C. K. N. – Science, 1978
Discusses the use of laser spectroscopy in determining the presence of specific gaseous constituents. Three of currently used modes for laser detection of pollution are reviewed; (1) long-path measurements; (2) laser raman (differential absorption) measurements; and (3) optoacoustic detection. (HM)
Descriptors: Lasers, Measurement, Optics, Physics
Peer reviewed Peer reviewed
Rentzepis, P. M. – Science, 1978
Describes a currently used picosecond spectroscopy system capable of reliably recording picosecond events. Two areas of picosecond research are discussed: one concerns the interaction of electrons in fluids; the second, the primary events in vision. (Author/HM)
Descriptors: Biological Sciences, Chemistry, Lasers, Optics
Peer reviewed Peer reviewed
Schawlow, Arthur L. – Science, 1978
Surveys new laser techniques and a variety of spectroscopic experiments that can be used to detect, measure and study very small numbers of atoms on molecules. The range of applicability of these techniques is also included. (HM)
Descriptors: Atomic Structure, Lasers, Optics, Physics