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Developments in Holography
Photogramme~ria - Elsevier Publishing Ccmpany. Amsterdam - Printed in The Netherlands
Book Review D e v e l o p m e n t s in Holography. (Seminar-in-Depth S.P.I.E., Seminar Proceedings
Vol. 25.) BRIAN J. THOMPSON and JAHN B. DEVELIS (Editors). Society of Photo-Optical Instrumentation Engineers, Redondo Beach, Calif., 1971, 255 pp., $22.00 (S.P.I.E. members $14.00). The proceedings of the S.P.I.E. Seminar-in-depth on Holography (Boston, April [4-15, 1971) offers a broad report on the state-of-the-art in this modern field of optics. As the editors say in the preface: "The literature on other conferences has been rather overly optimistic about the future role of holography in science and technology". Indeed, a markedly "realistic approach to the problems" is noted in quite a number of the articles in this book. The proceedings include twelve invited papers and thirteen short communications. Among the former we note the following. E. W. Leith lists five applications of holography. The 3-page article only represents an abstract-like enumeration of limited interest. J. C. Urbach gives an account on hologram-recording materials: starting by a classification of the different types of holograms, he discusses most of the classical and exotic materials that have been used in holography to date. Especially noteworthy is his references section with 105 citations. A. W. Lohmann explains the "why" and "how" of computer holograms. J. T. La Maccia points out the potential promise of holographic optical memories and the serious problems of the individual components of such a system. P. Greguss develops on 28 pages the concept and justifications of bioholography, a fascinating subject, which uses the theory of holography to explain the information acquisition and retrieval mechanism in living creature. A. Vander Lugt describes an operational optical processor as applied to cloud motion observed from a satellite. Basic concepts and recently developed methods of acoustical holography are discussed by A. F. Metherell. The Holosonics Ultrasonic Imager as well as other techniques are presented. The metrological applications of the speckles are set forth in the contribution by J. M. Burch. He points out a wide variety of applications such as vibration measurements with varying sensitivity, in-plane strain detection and others. Burch's paper is the only one in the S.P.I.E.-proceedings which is not on a holographic subject. The applications, though, being very similar to (but simpler than) hologram interferometry justify the inclusion of this contribution. B. J. Matthews reports on the technique developed to measure fine particulates in a coal-fired steam boiler. It is an exceptionally fine piece of down-toearth holographic work with impressive experimental results. Holographic interferometry is treated by R. F. Wuerker. He explains a
142
BOOK REVIEW
fairly complete catalogue of nondestructive testing methods as well as an example of the schlieren technique applied to the analysis of shock waves around a supersonic bullet. The last invited contribution, by J. R. Vasner, treats the different holographic contouring methods. Among the short communications only a few will be noted. D. H. Close presents an operational portable holocamera for microscopy with a resolution of 5/~m. The speckle noise and its elimination are treated in a simple way. Five papers treat specific facts of hologram interferometry, but none of them describes any exciting innovation. Nevertheless, they represent a worthwhile discussion of possible applications or difficulties that may interest people with little background in holography but a future need for one of the different techniques. As a whole the book offers a series of application-oriented papers comprising most of the recent techniques. Some of the invited contributions point out the rather disappointing difficulties with the actual holographic hardware, thereby stimulating further efforts. It certainly is a book that belongs into a library or even onto the desk of active holographers. F. MOTTIER (Baden)
Book Review D e v e l o p m e n t s in Holography. (Seminar-in-Depth S.P.I.E., Seminar Proceedings
Vol. 25.) BRIAN J. THOMPSON and JAHN B. DEVELIS (Editors). Society of Photo-Optical Instrumentation Engineers, Redondo Beach, Calif., 1971, 255 pp., $22.00 (S.P.I.E. members $14.00). The proceedings of the S.P.I.E. Seminar-in-depth on Holography (Boston, April [4-15, 1971) offers a broad report on the state-of-the-art in this modern field of optics. As the editors say in the preface: "The literature on other conferences has been rather overly optimistic about the future role of holography in science and technology". Indeed, a markedly "realistic approach to the problems" is noted in quite a number of the articles in this book. The proceedings include twelve invited papers and thirteen short communications. Among the former we note the following. E. W. Leith lists five applications of holography. The 3-page article only represents an abstract-like enumeration of limited interest. J. C. Urbach gives an account on hologram-recording materials: starting by a classification of the different types of holograms, he discusses most of the classical and exotic materials that have been used in holography to date. Especially noteworthy is his references section with 105 citations. A. W. Lohmann explains the "why" and "how" of computer holograms. J. T. La Maccia points out the potential promise of holographic optical memories and the serious problems of the individual components of such a system. P. Greguss develops on 28 pages the concept and justifications of bioholography, a fascinating subject, which uses the theory of holography to explain the information acquisition and retrieval mechanism in living creature. A. Vander Lugt describes an operational optical processor as applied to cloud motion observed from a satellite. Basic concepts and recently developed methods of acoustical holography are discussed by A. F. Metherell. The Holosonics Ultrasonic Imager as well as other techniques are presented. The metrological applications of the speckles are set forth in the contribution by J. M. Burch. He points out a wide variety of applications such as vibration measurements with varying sensitivity, in-plane strain detection and others. Burch's paper is the only one in the S.P.I.E.-proceedings which is not on a holographic subject. The applications, though, being very similar to (but simpler than) hologram interferometry justify the inclusion of this contribution. B. J. Matthews reports on the technique developed to measure fine particulates in a coal-fired steam boiler. It is an exceptionally fine piece of down-toearth holographic work with impressive experimental results. Holographic interferometry is treated by R. F. Wuerker. He explains a
142
BOOK REVIEW
fairly complete catalogue of nondestructive testing methods as well as an example of the schlieren technique applied to the analysis of shock waves around a supersonic bullet. The last invited contribution, by J. R. Vasner, treats the different holographic contouring methods. Among the short communications only a few will be noted. D. H. Close presents an operational portable holocamera for microscopy with a resolution of 5/~m. The speckle noise and its elimination are treated in a simple way. Five papers treat specific facts of hologram interferometry, but none of them describes any exciting innovation. Nevertheless, they represent a worthwhile discussion of possible applications or difficulties that may interest people with little background in holography but a future need for one of the different techniques. As a whole the book offers a series of application-oriented papers comprising most of the recent techniques. Some of the invited contributions point out the rather disappointing difficulties with the actual holographic hardware, thereby stimulating further efforts. It certainly is a book that belongs into a library or even onto the desk of active holographers. F. MOTTIER (Baden)