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IEEE Journal of Quantum Electronics

Issue 9 • Date September 1982

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Displaying Results 1 - 15 of 15
  • [Front cover and table of contents]

    Publication Year: 1982, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (178 KB)
    Freely Available from IEEE
  • Estimation of the intracavity power levels for a hybrid free-electron laser device

    Publication Year: 1982, Page(s):1318 - 1321
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (339 KB)

    A hybrid free-electron laser device (called a GYROFEL), employing axial bunching in a solenoidal field configuration, has been analyzed to determine potential operational power levels. A small signal gain model was utilized to estimate the intracavity electric field strengths attained at equilibrium in such a device. The results indicate that out-coupled power levels approaching 1 MW might be achi... View full abstract»

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  • Generation of short optical pulses in semiconductor lasers by combined DC and microwave current injection

    Publication Year: 1982, Page(s):1340 - 1350
    Cited by:  Papers (14)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1148 KB)

    We report picosecond pulse generation in low threshold buried optical guide lasers using combined direct and microwave current excitation. The pulse widths were obtained as a function of direct current for several levels of RF excitation using lasers 125 and 380 μm long. The pulses have a Gaussian shape with full widths at half maximum intensity ranging from 19 to 57 ps. The pulse widths were... View full abstract»

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  • [Back cover]

    Publication Year: 1982, Page(s): 0
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    Freely Available from IEEE
  • Dependence of injection locking of a TEA CO2laser on intensity of injected radiation

    Publication Year: 1982, Page(s):1332 - 1336
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    We report the results of an experimental study to determine the minimum required injected power to control the output frequency of a TEA CO2laser. A CW CO2waveguide laser was used as the injection oscillator. Both the power and the frequency of the injected radiation were varied, while the TEA reasonator cavity length was adjusted to match the frequency of the injected signal... View full abstract»

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  • Five color CO2laser stabilization and switching

    Publication Year: 1982, Page(s):1326 - 1331
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    A CO2laser is described which may be actively stabilized in any of four different ... View full abstract»

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  • Transfer of pump spatial variations to Stokes phase in Raman amplifiers

    Publication Year: 1982, Page(s):1370 - 1375
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    Many applications of forward Raman amplifiers require that transverse spatial amplitude and phase aberrations in the pump beam not be transferred to the phase of the amplified Stokes signal. Detailed one-dimensional depleted-pump calculation are given for two mechanisms that transfer pump aberrations to the Stokes phase. The first is multilongitudinal mode pump fluctuations that vary faster than t... View full abstract»

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  • Effect of nitrogen on XeF(C→A) and Xe2Cl laser performance

    Publication Year: 1982, Page(s):1336 - 1340
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    Experiments demonstrating the effect of nitrogen on electron-beam pumped XeF( C \rightarrow A ) and Xe2Cl laser performance are reported. The laser power of the XeF( C \rightarrow A ) laser decreased with increasing nitrogen pressure, whereas the Xe2Cl laser power increased by a factor of three at a... View full abstract»

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  • Stationary state model for normal metal tunnel junction phenomena

    Publication Year: 1982, Page(s):1387 - 1398
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1104 KB)

    A model applicable to normal metal tunnel junctions is presented. This model, referred to herein as the stationary state model, is an extension of the extended basis function theory of Kleinman and Duke. Under the assumption that elastic tunneling is the dominant transport mechanism under static bias, we have extended the theory to include the case where there is an ac component of bias potential,... View full abstract»

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  • Bistability and pulsations in semiconductor lasers with inhomogeneous current injection

    Publication Year: 1982, Page(s):1351 - 1361
    Cited by:  Papers (40)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1248 KB)

    Bistability and pulsation at microwave frequencies are observed in CW GaAs semiconductor lasers with inhomogeneous current injection. Inhomogeneous current injection is achieved with a segmented contact structure. Crucial to the understanding of the characteristics of this device is the discovery of a negative differential electrical resistance across the contacts of the absorbing section. Dependi... View full abstract»

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  • Higher order mode Raman gain coefficients

    Publication Year: 1982, Page(s):1323 - 1325
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    The Raman gain coefficients for higher order Hermite-Gaussian modes are derived. The results indicate that the Raman intensity gain coefficient (collimated beam) is relatively insensitive to, while the Raman power gain coefficient (tight focus) is very sensitive to the mode structure of a beam. Thus, for high power lasers in which high gain is attainable with a collimated beam, the conversion effi... View full abstract»

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  • Phase conjugation by degenerate four-wave mixing in absorbing media

    Publication Year: 1982, Page(s):1376 - 1380
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    A theory of degenerate four-wave mixing in absorbing media is developed in terms of a general nonlinear susceptibility. The predictions of the theory are examined in both high and low reflectivity regimes and the specific nonlinearity-inducing mechanisms of thermally induced refractive index changes, the Kerr effect, and saturable absorption are considered. Such a theory is of particular relevance... View full abstract»

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  • Quantum theory of the complex dielectric constant of free carriers in polar semiconductors

    Publication Year: 1982, Page(s):1361 - 1370
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (952 KB)

    The optical constants and reflectivity of a semiconductor are known as functions of the real and imaginary parts of the complex dielectric constant. The imaginary part of the complex dielectric constant e2is proportional to the optical conductivity, which has recently been calculated from the quantum density matrix equation of motion. The expression obtained for e2reduces to ... View full abstract»

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  • Damage thresholds at metal surfaces for short pulse IR lasers

    Publication Year: 1982, Page(s):1381 - 1386
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    Measurements of damage to metal surfaces induced by intense nanosecond pulses of IR radiation are reported. Single-shot damage thresholds of Cu, stainless steel, molybdenum, and aluminum surfaces have been measured for various angles of incidence and the predicted increase in damage thresholds for grazing incidence optical components have been experimentally verified for the first time at 10 μ... View full abstract»

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  • Gain-optimized CO2waveguide laser

    Publication Year: 1982, Page(s):1321 - 1322
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    The gain of CO2waveguide lasers was measured for a wide range of He:CO2ratios and total gas pressures. It was found that maximum gain occurs at relatively low pressures. To minimize laser discharge length it is advantageous to operate in this high gain, low pressure regime even at the expense of a reduction in saturation intensity which falls off quadratically with gas pressu... 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