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IEEE Journal of Quantum Electronics

Issue 11 • Date November 1967

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Displaying Results 1 - 25 of 46
  • [Front cover and table of contents]

    Publication Year: 1967, Page(s): 0
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    Freely Available from IEEE
  • 1.5 - Use of lasers in measurements of the stimulated emission cross section

    Publication Year: 1967, Page(s):425 - 427
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (787 KB)

    The method of determining the stimulated emission cross section from the fluorescence changes of an excited medium caused by a resonance laser pulse is discussed. As an illustration of this method \sigma \simeq 2 \cdot 10^{2} cm2has been measured for a Nd silicate glass laser. View full abstract»

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  • 2.3 - Performance limits and design procedure for all-weather terrestrial rangefinders

    Publication Year: 1967, Page(s):428 - 435
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2750 KB)

    This paper provides an assessment of the maximum all-weather operational range for "single-ping" terrestrial laser rangefinders. It is shown that this range is a function of a single parameter involving the transmitted pulse energy, receiver aperture area, photoelectric quantum efficiency, and operating wavelength. By virtue of this convenient parameter, trade-offs between different laser material... View full abstract»

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  • 2.5a - A laser satellite ranging system - Part I: Equipment description

    Publication Year: 1967, Page(s):435 - 439
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2036 KB)

    A laser tracking system has been used to track three satellites equipped with retroreflectors. An rms scatter of one to two meters derived from 200-200 observations per pass agrees with the expected instrumental precision. View full abstract»

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  • 2.5b - A laser satellite ranging system - Part II: An analysis of the GSFC laser ranging data

    Publication Year: 1967, Page(s):440 - 445
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1849 KB)

    The Laser Tracking System at Goddard Space Flight Center has obtained several sets of data from the BE-C and GEOS-A satellites. This paper presents the results of the analysis of data taken with this system, whose primary measurement is the slant range from the tracker to the satellite. View full abstract»

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  • 2.7 - Underwater optical range gating

    Publication Year: 1967, Page(s):445 - 448
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1306 KB)

    The applicability of underwater optical range gating, designed to extend the range of underwater visibility, was demonstrated in a series of experiments. With black tape patterns on a Scotchlite background as the target, comparison photographs of gated and nongated exposures illustrated the feasibility of extending the range of underwater photography by reducing the intermediate veiling luminance ... View full abstract»

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  • 3.1 - Traveling-wave laser gyrocompass

    Publication Year: 1967, Page(s):449 - 453
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1098 KB)

    A direction-finding device has been designed making use of the properties of the ring laser. The order of magnitude precision for laser gyro is 0.1 degree per hour. The north determination requires long integration time when the plate is static. However, this may be vastly improved by a dynamic method. In this experiment, the ring laser is not rotated about its sensitive axis but about an axis par... View full abstract»

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  • 3.2 - Acoustic wave amplitude modulation of a multimode ring laser

    Publication Year: 1967, Page(s):454 - 459
    Cited by:  Papers (7)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2093 KB)

    Synchronous intercavity amplitude modulation of a ring laser operating well above threshold causes the numerous axial modes in each oppositely directed (OD) wave to lock into fixed amplitudes and phases. The light in the cavity is composed of two oppositely directed pulses of roughly 30-cm spatial extent. Saturation of the active medium dictates the location of the modulator for symmetric treatmen... View full abstract»

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  • 3.5 - Precise interferometry of glass plates

    Publication Year: 1967, Page(s):459 - 463
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1744 KB)

    A method employing both multiple-beam and two-beam interferometry for the measurement of extremely small changes in thickness and refractive index of glass plates is described. The glass plate which is to be measured is scanned through a narrow laser beam in one arm of a Twyman-Green interferometer, the output of which constitutes one arm of a two-beam optical measuring set. By measuring the chang... View full abstract»

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  • 4.6 - Switching and control of a laser oscillator by injection of a giant-pulse laser signal

    Publication Year: 1967, Page(s):464 - 472
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3424 KB)

    The switching and controlling of laser oscillation by optical injection or radiative-coupling schemes using the two laser system are investigated theoretically and experimentally in this paper. The output from a Q -switched laser was injected into the second laser to effect optical coupling. Corresponding to this model, we have succeeded in deriving a general an... View full abstract»

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  • 4.7 - Coherent phasing of repetitively pulsed laser amplifiers

    Publication Year: 1967, Page(s):472 - 479
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3065 KB)

    Recently completed experiments demonstrated the feasibility of a coherent optical array, using 1.06-micron laser components. This paper reports on automatic techniques used to control the relative phase of Nd :glass power amplifiers with gains up to 10 dB. Both amplifiers, fed from a master oscillator, were pumped repetitively at rates of one pulse per two seconds. View full abstract»

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  • 5.1 - Use of an oscillating laser as a heterodyne receiver preamplifier

    Publication Year: 1967, Page(s):479 - 484
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2036 KB)

    In this paper the results of a study of the amplification characteristics of lasers for signals injected near their frequencies of oscillation are reported. An approximate theoretical treatment is given which indicates that substantial amplification will occur under conditions for which the anisotropy of the laser cavity is small, the polarization state of the injected signal is orthogonal to that... View full abstract»

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  • 5.2 - Infrared 10.6-micron heterodyne detection with gigahertz IF capability

    Publication Year: 1967, Page(s):484 - 492
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2161 KB)

    Analyses and experiments have been carried out on heterodyne detection at 10.6 microns with the objective of obtaining IF bandwidth capability into the microwave region. UHF and microwave measurements on the quantum-noise-limited generation-recombination (G-R) noise spectrum of compensated copper-doped germanium photoconductive mixer elements, measured under operational conditions at 10.6 microns,... View full abstract»

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  • 5.4 - Optical isolators for high-power 1.06-micron glass laser system

    Publication Year: 1967, Page(s):493 - 498
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2274 KB)

    Five glasses, four diamagnetic and one paramagnetic, were evaluated as Faraday rotation optical isolator materials. For each glass, absorbance, relative beam-spread degradation, and passive extinction ratio were measured. A number of notched-bore electromagnets and a permanent magnet, which were used in the evaluation of these glasses as isolators, are described. Measurements on a 15-mm-diameter b... View full abstract»

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  • 5.6 - Self-aligning optical beam waveguides+C6553

    Publication Year: 1967, Page(s):498 - 503
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2013 KB)

    Previous experiments with a lens-type beam waveguide have demonstrated the applicability of such guides to efficient long distance transmission at optical frequencies. In practical applications it will be necessary to automatically compensate for movements of the ground which would misalign the guide and thus cause increased transmission loss. In order to investigate the practicability of "self-al... View full abstract»

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  • 6.4 - Optical processing of flight test data

    Publication Year: 1967, Page(s):503 - 509
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2242 KB)

    An optical analog computer has been demonstrated which is capable of obtaining quantitative estimates of transfer functions of systems from finite records of input and response data and power spectra of the input and response. The input x(t) and response z(t) are recorded as amplitude-transmission variations on a photogr... View full abstract»

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  • 7.3 - Five-kilohertz repetition-rate pulsed YAG:Nd laser

    Publication Year: 1967, Page(s):509 - 516
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2923 KB)

    The design of a five-kilohertz repetition-rate pulsed YAG:Nd laser of one watt average output power is described. Four problem areas are considered: the relation between material properties and performance, optical pumps, resonators, and cooling. View full abstract»

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  • 7.4 - Design considerations for Raman lasers

    Publication Year: 1967, Page(s):516 - 520
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1801 KB)

    The Raman laser is potentially a device capable of converting laser output of poor spatial quality into a nearly diffraction-limited beam with high efficiency. A number of factors must be considered in the design of a Raman laser. To avoid beam trapping, gases are preferable as Raman media at high-power levels. For optimal mode control, an oscillator-amplifier combination is the most flexible conf... View full abstract»

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  • 7.5 - A quartz ablating lamp for u+C3678ltraviolet pumping and repetition-rate pumping

    Publication Year: 1967, Page(s):521 - 524
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1535 KB)

    A quartz ablating lamp laser pump which emits intense short-duration radiation, particularly in the ultraviolet, is described. The peak radiation approximates a 19000°K blackbody at wavelengths greater than 3500 Å,and pulse durations are about 30 μs. The lamp successfully pumped a CaF2crystal, doped with ErF3and TmF3to laser emission at 8465 ± 2... View full abstract»

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  • 8.4 - A 3.39-micron infrared optical heterodyne communication system

    Publication Year: 1967, Page(s):524 - 531
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3138 KB)

    An optical heterodyne communication system is described which employs a separate stable laser local oscillator at the receiver. The theoretical advantage of quantum-limited reception has been realized, demonstrating an improvement in receiver sensitivity of more than 40 dB over that of a conventional photodetector receiver. The fundamental sources of noise in the system are identified as laser osc... View full abstract»

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  • 8.6 - Fading and polarization noise of a PCM/PL System

    Publication Year: 1967, Page(s):532 - 539
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2244 KB)

    This paper presents a generalized mathematical model of a PCM/PL system. The analysis demonstrates that any two orthogonal polarizations may be used to represent the binary bits. The generalized approach also facilitates the derivation of the system bit error rate when polarization errors are introduced. Six types of polarization errors are assumed for the discussion. The various cases of polariza... View full abstract»

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  • 9.4 - An investigation of laser wave depolarization due to atmospheric transmission

    Publication Year: 1967, Page(s):540 - 543
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1349 KB)

    A theoretical and an experimental analysis of optical depolarization due to atmospheric transmission is given. We used the geometrical optics approximation and applied Chernov's three-dimensional ray statistics model for the calculations. The theory predicts that the root-mean-square change of the polarization angle of an optical beam propagating through the atmosphere is of the order of 10-9... View full abstract»

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  • 9.6 - A dual wavelength optical distance measuring instrument which corrects for air density

    Publication Year: 1967, Page(s):544 - 550
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2838 KB)

    An instrument has been constructed which simultaneously measures optical path length at two wavelengths and so permits determination of average refractive index over the common path and hence distance to 1 \times 10^{-6} or better without extensive meteorological observations. Using a He-Ne laser (6328 Å) and a filtered high-pressure mercury arc lamp (36... View full abstract»

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  • 10.2 - Broadband, low drive-power electrooptic modulator

    Publication Year: 1967, Page(s):550 - 554
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1645 KB)

    A compact optical intensity modulator has been constructed and tested which operates at 6328 Å and requires 60 mW of drive power per MHz of operating bandwidth. Intensity modulation of 100 percent was achieved with a transistorized driver delivering 6 watts over a 100-kHz to 10O-MHz bandwidth. The low drive-power performance is obtained by using a KD*P crystal modulator cell having a large le... View full abstract»

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  • 10.3 - A low drive-power light modulator using a readily available material ADP

    Publication Year: 1967, Page(s):555 - 560
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2053 KB)

    A video-frequency transverse electrooptic light amplitude modulator utilizing the matrix element γ41in ADP is described and compared favorably with other modulator configurations using ADP, KDP, and KD*P. It utilizes two crystals to compensate for stemperature and angular dependences of birefringence, and has more than adequate stability for normal laboratory use. A useful built-in... View full abstract»

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Aims & Scope

The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics..

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Aaron R. Hawkins
Brigham Young University