IEEE Journal of Quantum Electronics

Issue 5 • May 1983

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Displaying Results 1 - 24 of 24
  • [Front cover and table of contents]

    Publication Year: 1983, Page(s): 0
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  • Infrared temperature tunability in GaSe, HgS, and Tl3AsSe3nonlinear devices

    Publication Year: 1983, Page(s):779 - 782
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (395 KB)

    Temperature coefficients of refractive indexesdn/dtdetermine temperature stability and temperature tuning in nonlinear optical laser devices. These coefficients for three infrared crystals HgS, GaSe, and Tl3AsSe3are analyzed for the first time to find refractive indexes at different temperatures to predict therefrom the tuning curves for some three-wave parametric ... View full abstract»

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  • Mode structure of a tapered-wiggler free-electron laser stable oscillator

    Publication Year: 1983, Page(s):800 - 809
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1128 KB)

    The transverse mode structure of a tapered-wiggler free-electron laser (FEL) oscillator operating at full saturated intensity is analyzed numerically. The unique features of the FEL geometry, and particularly the refractive property of thee-beam, which acts like a series of small focusing lenses, tend to produce a steady-state mode structure different from the TEM00mode of th... View full abstract»

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  • The effects of laser pulsewidth and molecular lifetime on the experimental determination of one-photon and two-photon excitation spectra

    Publication Year: 1983, Page(s):826 - 833
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (835 KB)

    We demonstrate that it is important to know both the observed fluorescence lifetime (τ) and the excitation pulsewidth (Gamma) in order to determine the effect of changes inGammaon the measurement of one- and two-photon excitation spectra. IfGamma/tauis greater than 3, it is sufficient to measureI_{F}/I_{L}^{n}orI_{F}/N_{L}^{n}forn View full abstract»

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  • The stress-optic effect in optical fibers

    Publication Year: 1983, Page(s):834 - 839
    Cited by:  Papers (80)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (700 KB)

    The importance of the photoelastic effect in controlling polarization in optical fibers is discussed. Measurements of the stress-optic coefficient, its dispersion, and temperature dependence are reported using a fiber measurement method. The results compare closely to data obtained for bulk silica by an extrapolation technique. It is shown that the dispersion of the stress-optic coefficient can ha... View full abstract»

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  • Coupled multiple waveguide systems

    Publication Year: 1983, Page(s):840 - 844
    Cited by:  Papers (76)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (493 KB)

    The coupled-mode equations for systems of four and five planar coupled waveguides are investigated to determine transmission characteristics of interest. By proper selection of the coupling coefficients in a system of "synchronous" waveguides, full transfer can be achieved from one outermost guide to the guide on the opposite side. In the five-waveguide system, an excitation of the center guide ca... View full abstract»

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  • Dispersion of the refractive index of GaAs and AlxGa1-xAs

    Publication Year: 1983, Page(s):877 - 882
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    The real part of the complex refractive index near the fundamental absorption edge is calculated for the ternary compound AlxGa1-xAs,0 leq x leq 0.3, as a function of frequency. An analytical expression fornis given which is derived from a quantum mechanical calculation of the dielectric constant of a semiconductor assuming the band structure of the Kane... View full abstract»

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  • Picosecond phenomena III

    Publication Year: 1983, Page(s): 883
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (81 KB)

    First Page of the Article
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  • [Back cover]

    Publication Year: 1983, Page(s): 0
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    Freely Available from IEEE
  • Third order autocorrelation study of amplified subpicosecond laser pulses

    Publication Year: 1983, Page(s):775 - 778
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    We have used the well-known optical Kerr effect shutter method to determine the temporal width and shape of subpicosecond pulses issued from a passively mode-locked CW dye laser, feeding a three stage amplifier. This technique corresponds to a third order correlation measurement and thus yields information on the pulse profile and especially about a possible asymmetry. The accuracy of results grea... View full abstract»

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  • Cathode materials for sealed CO2waveguide lasers

    Publication Year: 1983, Page(s):815 - 820
    Cited by:  Papers (8)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    Fourteen materials have been tested as cathodes for use in long-life sealed carbon dioxide lasers. With appropriate preprocessing and temperature of operation, a stainless steel and a platinum derivative have been found suitable. View full abstract»

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  • Measurement of laser photoelectron image degradation at high current densities

    Publication Year: 1983, Page(s):873 - 877
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (960 KB)

    Loss of image resolution and contrast in a laser-illuminated photoelectron microscope have been measured for current densities up to 1 A/cm2and light intensities up to about 2 MW/cm2. Contrast is greatly reduced at these levels for detail less than a few microns in size, although images below 0.1 A/cm2contain 0.1 μm detail. Comparison to theory shows that the ... View full abstract»

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  • Current injection in multiquantum well lasers

    Publication Year: 1983, Page(s):794 - 797
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    A model of current injection in a multiquantum well laser structure is proposed. A condition for uniform pumping of the wells is derived. For a given barrier height, uniform pumping can be achieved by increasing the ratio of the well-to-barrier thickness. The mechanism of current transport at thermal equilibrium for uniform pumping is by drift current in the barrier layers which equals the current... View full abstract»

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  • Mode dependence of splice loss in graded-index optical fibers

    Publication Year: 1983, Page(s):788 - 791
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    Various measurements of the mode dependence of loss in fusion splices are presented. Both laser diodes and light-emitting diodes are employed as sources and measurements are made using both the cutback method and the backscattering technique. Empirical relations, quantifying the form of the mode dependent loss function, are derived and discussed. View full abstract»

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  • Mode selection and frequency tuning by injection in pulsed TEA-CO2lasers

    Publication Year: 1983, Page(s):821 - 825
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    An analytical model is presented which describes certain characteristics of the injection locking of a pulsed TEA-CO2laser by means of tunable CW laser radiation. The requirements for SLM generation as the injection frequency is tuned away from line center are discussed. Results indicate the practical importance of the locking time, a parameter which depends on both the injected power a... View full abstract»

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  • Scaling laws for the intrapulse frequency stability of an injection mode selected TEA CO2laser

    Publication Year: 1983, Page(s):810 - 814
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    Heterodyne measurements of the intrapulse frequency behavior of an injection mode selected TEA CO2laser are presented. The frequency rose as the square of time at a rate varying linearly with energy and strongly dependent on spot size. These results are in accordance with a laser induced medium perturbative (LIMP) model, which allows the chirp in any TEA laser system to be predicted. View full abstract»

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  • Long pulse excimer laser excited by sequenced discharges

    Publication Year: 1983, Page(s):786 - 788
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    An excimer laser with a total gain volume of 40 cm3is excited by sequential discharges between two independent electrode pairs sharing the same optical resonator. For gas mixtures typical of the XeCl species and depending upon the optical output coupling fraction, the laser pulse length is extended by factors of two to three with two discharges, as opposed to the case of a single discha... View full abstract»

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  • Very low threshold InGaAsP mesa laser

    Publication Year: 1983, Page(s):783 - 785
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    Very low threshold currents InGaAsP/InP terrace mesa (T-ME) lasers with an unpassivated surface have been fabricated on semi-insulating (SI) InP substrates. Fabrication of the lasers involves a single-step liquid phase epitaxial (LPE) growth and a simple etching process. Lasers operating in the fundamental transverse mode with threshold currents as low as 6.3 mA (for a cavity length of 250 μm... View full abstract»

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  • Theory of backward Rayleigh scattering in polarization-maintaining single-mode fibers and its application to polarization optical time domain reflectometry

    Publication Year: 1983, Page(s):854 - 861
    Cited by:  Papers (14)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    Backward Rayleigh scattering in polarization-maintaining single-mode optical fibers has been theoretically analyzed. A simple formula for the backscattered power, which comes back again at an input portion of the fiber, is derived with a recapture factor Sxy. By applying the analysis to a polarization optical time domain reflectometry (POTDR), details of the POTDR have been made clear. ... View full abstract»

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  • Attenuation in planar optical waveguides: Comparison of theory and experiment

    Publication Year: 1983, Page(s):845 - 853
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (872 KB)

    Experimental measurements of the guided-wave attenuation and surface roughness for three Corning 7059 glass waveguides were compared to the predictions of a surface-scattering theory. The attenuation coefficient was calculated by means of a first-order boundary-perturbation theory, and was used to examine the role of the various parameters in determining guided-wave attenuation. The comparison to ... View full abstract»

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  • Synthetic nonlinear semiconductors

    Publication Year: 1983, Page(s):791 - 794
    Cited by:  Papers (151)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    Second-order optical nonlinearities associated with intra-subband transitions in AlxGa1-xAS heterostructure exhibiting the quantum size effect are considered and shown to be large under conditions of degenerate doping and nonsymmetric compositional grading. Nonlinearities of between 10-100 times larger than in bulk GaAs seem feasible. View full abstract»

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  • New pulsed far infared laser lines in D2O

    Publication Year: 1983, Page(s):797 - 798
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    Eleven new far infrared (FIR) laser transitions were obtained by pumping a D2O oscillator with the 9P(12), 9P(18), 9P(44), and 10R(22) line radiation of a TEA-CO2-laser. The efficiency of at least two of the new lines is comparable to that of the strongest known lines in D2O. View full abstract»

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  • Diagrammatic analysis of third order nonlinear optical processes

    Publication Year: 1983, Page(s):861 - 872
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1480 KB)

    We apply a diagrammatic density matrix perturbation technique to analyze third order nonlinear optical processes. The diagrammatic approach is shown to yield a significant simplification in the computation of both steady state and transient response while including the effects of damping and linewidth. The topology of the diagrams is stressed in identifying and interpreting their associated pertur... View full abstract»

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  • Noise in SIS microwave mixers

    Publication Year: 1983, Page(s): 799
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB)

    It is proposed that the noise in an SIS (superconductor-insulator-superconductor) microwave mixer is shot noise, and that it can be treated in a similar manner to the noise in Schottky barrier diodes. A noise temperature is defined, and how it can be optimized is indicated. An extension of the noise temperature concept of the source is used that makes noise temperatures additive at all frequencies... 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
Prof. Hon Ki Tsang
Chinese University of Hong Kong