Download or read book Research on Techniques for Light Modulation Detection Part Ii Frequency Demodulators written by E. O. Ammann and published by . This book was released on 1964 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of a one-year program on the demodulation of frequency-modulated (FM) or phase-modulated (PM) light are presented. Theoretical and experimental studies were made both of direct demodulation and heterodyne demodulation. A technique employing conversion of FM to AM via a birefringent device with subsequent detection by a traveling-wave phototube is used for the demodulation method. The report deals with techniques and devices for converting FM (and PM) to AM at optical frequencies. Comprehensive analyses and discussions are given on two simple birefringent devices, the birefringent discriminator and the optical ratio detector, devices capable of converting FM to AM and PM to AM, respectively. The use of multicrystal devices in demodulators is treated. Included are two optical network synthesis techniques for realizing birefringent devices having arbitrarily specified transfer functions. The conclusions reached in this program are stated, and the major contributions are summarized.

Download or read book Research of Techniques for Light Modulation Detection Part I Amplitude Demodulators written by B. J. McMurtry and published by . This book was released on 1964 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of a one-year applied research program on the demodulation of amplitude-modulated (AM) light are presented. Sufficient information is provided for the detailed understanding, design, and use of traveling-wave microwave phototubes (TWPs), the most promising detector for broadband-modulated light. The report includes: (1) the idealized analysis which first pointed out the more important TWP design considerations and operating characteristics; (2) a more complete computeraided analysis which gives detailed information on the effects of the various beam-circuit parameters and operating conditions; and (3) an analysis of the electron gun region, with emphasis on velocity spread and current density effects. The results of a detailed experimental analysis of the TWP are presented, providing both verification of the more complete theoretical treatment and information on generally-useful photodetector test techniques. Experimental data are given on several other types of photodetectors. A discussion of the design and construction of TWPs with S-1 photocathodes contains material of practical importance to TWP builders.

Download or read book U S Government Research Reports written by and published by . This book was released on 1964 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Demodulation of Frequency Or Space Modulated Light written by Stanford University. Stanford Electronics Laboratories and published by . This book was released on 1965 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The generation and detection of a light beam which is deflected back and forth at a microwave rate in accordance with frequency modulation on the beam is considered. Deflection was achieved by sending the frequency modulated light through a dispersing element. The detection system consisted of a photocathode which emitted a transversely modulated electron beam into a transverse-field interaction circuit. General analyses were developed for the dispersion and electron beam-circuit interaction systems. The applicability of the instantaneous-frequency viewpoint was explored in detail, and a new condition for the validity of this viewpoint was derived. Phototube design procedures were formulated. Experiments demonstrated the dispersion and interaction mechanisms, including an unforeseen effect involving partial interception of the deflected light beam. The experiments supported the detailed theoretical analyses. An examination of the basic noise limitation revealed a significant advantage over certain other FM light detection systems. As optical modulation techniques improve, it is expected that this approach may represent a superior means of detection in optical communications systems. (Author).

Download or read book Research on Techniques for Light Modulation Detection written by and published by . This book was released on 1964 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers the seventh quarter of an applied research program conducted by the Sylvania Microwave Device Division to establish techiques for light modulation detection. New results are described in the following two areas: (1) In IER No. 6, two synthesis techniques (termed I and II) for realizing an arbitrary optical transfer function were described. Synthesis procedure no. I yields a filter containing n birefringent crystals, n bias units, and n + l polarizers, while synthesis procedure no. II gives a filter containing n birefringent crystals and two polarizers. IER No. 7 describes an important improvement in synthesis procedure no. I which allows us to maximize the filter output. (2) A proposed technique is presented for modifying the birefringent discrimnator so that it can accommodate light of an arbitrary polarization. (Author).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Laser Literature written by Kiyo Tomiyasu and published by Springer. This book was released on 2013-11-09 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book OTS Selective Bibliography written by United States. Dept. of Commerce. Office of Technical Services and published by . This book was released on with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Demodulation of Frequency Or Space Modulated Light written by James Richard Kerr and published by . This book was released on 1965 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Smart and Innovative Trends in Next Generation Computing Technologies written by Pushpak Bhattacharyya and published by Springer. This book was released on 2018-06-08 with total page 1010 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-volume set CCIS 827 and 828 constitutes the thoroughly refereed proceedings of the Third International Conference on Next Generation Computing Technologies, NGCT 2017, held in Dehradun, India, in October 2017. The 135 full papers presented were carefully reviewed and selected from 948 submissions. There were organized in topical sections named: Smart and Innovative Trends in Communication Protocols and Standards; Smart and Innovative Trends in Computational Intelligence and Data Science; Smart and Innovative Trends in Image Processing and Machine Vision; Smart Innovative Trends in Natural Language Processing for Indian Languages; Smart Innovative Trends in Security and Privacy.

Download or read book Applied Research on Techniques for Light Modulation Detection written by S. E. Sobottka and published by . This book was released on 1962 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research was conducted on the development of a high-sensitivity microwave phototube. Fabrication of efficient photocathodes and the development of a convergent electron gun was emphasized. Efforts were devoted to preliminary design and preparation. Items designed were deposition tubes for forming photocathodes, a convergent gun beam tester, a complete microwave phototube, and a modulated-light test bench. Apparatus constructed includes light transmission measurement apparatus for monitoring cathode film thicknesses, and vacuum station apparatus for cathode fabrication. (Author).

Download or read book A Study of Light Modulation and Scanning Techniques for Application to Simulation Display Generation written by W. L. Foley and published by . This book was released on 1966 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various techniques for modulation and scanning of coherent light are analyzed for application to the generation of high resolution high contrast displays for simulation. A number of possible techniques are discussed in the main body of the report. The individual discussions include a brief description of the princeiples of operation together with capabilities relative to bandwidth, contrast ratio, deflection angle, alignment, sensitivity, ease of fabrication, and handling. This is based somewhat upon voltage and power requirements over range of operation. (Author)

Download or read book Keywords Index to U S Government Technical Reports permuted Title Index written by United States. Department of Commerce. Office of Technical Services and published by . This book was released on 1962 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book FLIM Microscopy in Biology and Medicine written by Ammasi Periasamy and published by CRC Press. This book was released on 2009-07-06 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detecting Signals at the Single Molecule Level: Pioneering Achievements in MicroscopyRecent advances have led to such remarkable improvements in fluorescence lifetime imaging microscopy's (FLIM) capacity for contrast and sensitivity that researchers can now employ it to detect signals at the single molecule level. FLIM also offers the additional be

Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1970 with total page 1424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Atomic Force Microscopy for Energy Research written by Cai Shen and published by CRC Press. This book was released on 2022-04-26 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic force microscopy (AFM) can be used to analyze and measure the physical properties of all kinds of materials at nanoscale in the atmosphere, liquid phase, and ultra-high vacuum environment. It has become an important tool for nanoscience research. In this book, the basic principles of functional AFM techniques and their applications in energy materials—such as lithium-ion batteries, solar cells, and other energy-related materials—are addressed. FEATURES First book to focus on application of AFM for energy research Details the use of advanced AFM and addresses many types of functional AFM tools Enables readers to operate an AFM instrument successfully and to understand the data obtained Covers new achievements in AFM instruments, including electrochemical strain microscopy, and how AFM is being combined with other new methods such as infrared (IR) spectroscopy With its substantial content and logical structure, Atomic Force Microscopy for Energy Research is a valuable reference for researchers in materials science, chemistry, and physics who are working with AFM or planning to use it in their own fields of research, especially energy research.