Laser spectroscopy

Laser spectroscopy

aspects as remote gas analysis using Fabry-Perot techniques, laser-induced fluorescent decay spectra, fluorescence determination of the atmospheric po...

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aspects as remote gas analysis using Fabry-Perot techniques, laser-induced fluorescent decay spectra, fluorescence determination of the atmospheric pollutant NOs ,and Raman spectral measurements on combustion emissions and combustion products from flames. Four papers form the fourth session and are specifically on applications. Laser-Raman spectroscopy of biological molecules is covered with emphasis on nucleic acid research. Laser isotope separation methods are discussed and existing work in this very recently developed application described. Laser molecular-beam techniques are the basis of a paper dealing with the precision measurement of hyperfine structure in Ia. The final paper describes a Raman technique for the remote measurement of acidity of an aqueous solution. The papers in these proceedings introduce the reader to the latest work of 1974 in the respective fields, and will prove interesting and informative. H. G. Jerrard

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The first paper of section 4 has the problem of optimizing laser efficiency as its subject. Design problems associated with the industrial use of solid state lasers are considered and the details of a laser system which will put 1013 W uniformly onto a 200 pm spherical target of deuterium and tritium are presented. Problems arising in improving optical tracking and acquisition with detector arrays, and an ir radiation detector for measuring the spectral and spatial power distributions of the output of a quasi-cw CO laser are the subjects of two further papers. Finally design problems that arise in some applications of lateral interferometry are covered. Taken as a interesting projects in research in

whole this volume brings together a number of papers giving up-to-date information of optical the laser field which are subjects of current United States laboratories.

H. G. Jerrard

Laser spectroscopy Optical design problems in laser systems

Edited by S. Haroche, J. C. Peba y-Pe yroula, T. W. Hksch, S. E. Harris

Edited by W. R. Soo y, M. L. Stitch

Springer-Verlag,

Society of Photo-Optical Instrumentation Engineers, Proceedings, Volume 69, 1975, pp 192, $35.00 This volume covers the 23 papers presented at a seminar held in San Diego, California on August 21 and 22 1976. In general this seminar covered the optical problems that come with the use of intense radiation powers and with special features that arise in optical systems which use lasers. The papers are grouped into four sections: general, laser technology, optics and components, and systems and applications. The first paper of the general section serves as an introduction; it provides a descriptive survey of the special optical problems which arise in the design and use of lasers. Two papers are devoted to problems occurring in laser scanning and reading systems, and design problems for lasers in surgery, respectively. Two papers deal with specific uses, one on coherent laser radar and the other on high power lasers in materials processing. Under the laser technology section, four papers cover design problems in dye lasers, CO lasers, pulsed and cw electrically excited COs lasers, and a total internal reflection face pumped laser. A paper on high energy glass lasers for use in laser fusion and laser plasma interaction studies deals specifically with a system providing a terawatt pulse the brightness of which exceeds 1018 W cm-’ sr. The last paper of this section deals with the promise and limitations of a 10.6 pm waveguide laser power amplifier. The papers on optics and components deal with specific items. There is a short paper on collimators and another on laser power and energy measurements. The remaining papers deal directly with components. One is concerned with high power optics in which the problems associated with solid windows, aerodynamic windows, high reflectance mirror coatings, and pulsed damage resistant mirrors are discussed. Holographic optical elements, light scattering, and absorption in ir laser mirrors are considered. Finally, there is a paper on optical phased arrays that derive their phasing information

OPTICS AND LASER TECHNOLOGY.

FEBRUARY

1977

1975, pp x + 468, $18.50, DM 45.-

The influence of the laser on the venerable subject of spectroscopy has been more than one of rejuvenation. The techniques made possible by the laser’s unique properties have given rise to new branches of spectroscopy in both physics and chemistry. The potential of these new methods and the impact that many of them have already made is well illustrated in this book. As volume 43 of the Springer-Verlag series, ‘Lecture notes in Physics’ it presents the invited papers given at the Second Conference on Laser Spectroscopy held at Megeve in June 1975. The papers fall into three main categories: new developments in tunable lasers from the vuv to the ir spectral regions; spectroscopic applications to atoms and molecules, including high resolution and nonlinear techniques; photochemistry and isotope separation. Abstracts of several postdeadline papers are also included, giving information on the most recent trends in these fields. Most of the articles are short and rather specialized so that the reader cannot expect to find any comprehensive reviews. The references provided by each author are also limited but the book as a whole gives a useful and up to date overview of this rapidly expanding field. Part of the value of published conference proceedings is determined by the speed of publication and Springer-Verlag succeeded in producing the book in less than four months after the conference. This was achieved by photographic printing of the authors’ originals and so the style of presentation varies considerably. The photographs, diagrams and type are all clearly reproduced, but if the book is to be used as a reference source then the paper binding should be replaced by a more sturdy cover. Research workers in the fields of atomic and molecular spectroscopy, laser physics, nonlinear optics, and photochemistry will find this a useful book. P. Ewart