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IEEE Journal of Quantum Electronics

Issue 7 • July 1976

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Displaying Results 1 - 20 of 20
  • [Front cover and table of contents]

    Publication Year: 1976, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (153 KB)
    Freely Available from IEEE
  • Announcement

    Publication Year: 1976, Page(s): 377
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    Freely Available from IEEE
  • Analysis of the guided modes in slab-coupled waveguides using a variational method

    Publication Year: 1976, Page(s):378 - 382
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (477 KB)

    The waveguiding properties of the slab-coupled waveguides (i.e., the optical stripline and the rib waveguide) are investigated by the vector variational method. The slab-coupled waveguides are low-loss optical waveguides which are easy to fabricate and design. In this paper, the propagation constants and the field intensity distributions of the slab-coupled waveguides are presented, and the effect... View full abstract»

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  • Switched directional couplers with alternating ΔΒ

    Publication Year: 1976, Page(s):396 - 401
    Cited by:  Papers (288)  |  Patents (45)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (542 KB)

    Coupled waveguide structures with sections of alternating phase mismatch are proposed as switched directional coupler configurations in which complete conversion of light from one guide to the other can be achieved by an electrical adjustment. These structures can be used to make electrooptic switches and amplitude modulators in integrated optics form with improved conversion and on-off ratios. Co... View full abstract»

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  • Pulse propagation stability in absorbing and amplifying media

    Publication Year: 1976, Page(s):411 - 416
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    Simple stability conditions are obtained for pulse propagation in a two-level system with linear scattering and combined homogeneous and inhomogeneous broadening. Properties of steady-state π andpisqrt{2}area pulses are reviewed. Computer simulation of an approach to equilibrium pulse propagation is presented in a few cases for initially perturbed pulses. View full abstract»

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  • CN production efficiencies from active nitrogen-hydrocarbon flames

    Publication Year: 1976, Page(s):417 - 421
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (483 KB)

    Various hydrocarbons have been reacted with active nitrogen in a supersonic flow system. The resulting chemiluminescence was invariably dominated by CNA^{2} PiandB^{2} Sigma+ rightarrow X^{2}Sigma+emission. The intensity of this emission and the excited-state vibrational temperatures were strongly dependent upon the reactant hydrocarbon. Photon yields as high as 18.5 percent ... View full abstract»

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  • Analysis of grating-coupled radiation in GaAs:GaAlAs lasers and waveguides - I

    Publication Year: 1976, Page(s):422 - 428
    Cited by:  Papers (115)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (729 KB)

    Grating-coupled radiation in GaAs:GaAlAs lasers and waveguides is analyzed. A general formulation is developed for arbitrary-shaped gratings which need not be small in size. Two methods are used to solve the resulting equations in the case of rectangular-shaped gratings. The first is a perturbation technique and the second is iterative in nature. The iterative procedure converges to a numerical ex... View full abstract»

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  • A stacked Blumlein N2laser

    Publication Year: 1976, Page(s):437 - 438
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (241 KB)

    A novel device for producing fast-rise-time, large-volume electrical-discharge excitation of gas lasers is described. Some operating characteristics of an N2ultraviolet (UV) laser are presented. View full abstract»

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  • Analysis of the response of lasers to external signal injection

    Publication Year: 1976, Page(s):438 - 440
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (313 KB)

    The rate equation including the injection term was extended and solved numerically. The relation between the peak photon number in the onset of relaxation oscillations of lasers and the injected photon number is shown. The step response of the CW laser to the external signal injection and the reshaping property of the laser for the distorted optical pulse are reported. View full abstract»

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  • [Back cover]

    Publication Year: 1976, Page(s): 0
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    Freely Available from IEEE
  • Effect of Fabry-Perot interference on second harmonic generation in a GaAs plate

    Publication Year: 1976, Page(s):407 - 411
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    The transmitted and reflected second harmonic generation is computed for a parallel-plate Fabry-Perot structure including all the effects of interference and multiple reflections. As a function of wavelength, the spectra consist of rapid Fabry-Perot oscillations superimposed on the more slowly varying coherence-length fringes. The harmonic generation from a 97.5-μm-thick GaAs plate, obtained ... View full abstract»

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  • Second-harmonic generation in KB5O8· 4H2O

    Publication Year: 1976, Page(s):436 - 437
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    Theoretical calculations on the nonlinear crystal potassium pentaborate tetrahydrate (PPT) indicate that frequency doubling may be achieved over a wide spectral region of fundamental wavelengths (434 to >700 nm) using a single crystal cut. To test these results, second-harmonic generation of the ruby laser and the argon laser was investigated. View full abstract»

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  • Second-harmonic generation at 0.659 µ in CD*A

    Publication Year: 1976, Page(s):443 - 445
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    The efficient generation of the second-harmonic radiation of an Nd:YAG laser operating at 1.318 μ has been achieved in a deuterated cesium dihydrogen arsenate (CD*A) crystal. An overall peak power conversion efficiency of 40 percent was obtained for the experimental conditions described. View full abstract»

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  • Effect of a small capacitor in parallel with a pulsed CO2TEA laser

    Publication Year: 1976, Page(s): 447
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB)

    A simple circuit theory model is used to explain why discharge stability improves when a small capacitor is added in parallel with a CO2TEA laser. The small capacitor is a simple way to improve the discharge stability at low cost. View full abstract»

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  • Effects of nonlinear propagation on laser focusing properties

    Publication Year: 1976, Page(s):402 - 406
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    In a high-power laser system both the nonlinear growth of small-scale spatial irregularities on a pulse (beam breakup) and the accumulation of self-induced phase-front distortion on the spatial envelope of the pulse (whole-beam self-focusing) alter the focusing properties of the system output. We present experimental results which show simultaneously and in detail the influence of these two effect... View full abstract»

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  • Dye-laser cavity employing a reflective beam expander

    Publication Year: 1976, Page(s):440 - 442
    Cited by:  Papers (13)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    A repetitively pulsed dye laser employing a reflective intracavity beam expander achieves a 50-MHz full width at half-maximum (FWHM) linewidth. A geometrical technique for partially correcting the expander astigmatism and maintaining cavity stability is derived. The use of reflective cavity elements minimizes cavity losses and eliminates spurious reflections. View full abstract»

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  • Near-infrared dye laser pumped by a carbazine-122 dye laser

    Publication Year: 1976, Page(s):442 - 443
    Cited by:  Papers (10)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    Efficient generation of a high-power near-infrared dye laser has been achieved by pumping longitudinally with a 5321-Å pumped carbazine-122 dye laser at 7000 Å. A peak power as high as 3.5 MW at 8630 Å and peak powers in excess of 0.5 MW from 7680 to 9170 Å have been obtained. View full abstract»

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  • Theory and operation of high-power CW and long-pulse dye lasers

    Publication Year: 1976, Page(s):383 - 395
    Cited by:  Papers (44)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1248 KB)

    A complete theoretical model for CW and long-pulse dye lasers is developed. The effects of excited singlet-state absorption of pump and laser fight and triplet absorption of pump and laser light are included. Expressions are derived for gain, actual dye transmission, and output power. Experimental work is presented to verify the theory and to obtain values of excited-state absorption cross section... View full abstract»

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  • Infrared third-harmonic generation in molecular gases

    Publication Year: 1976, Page(s):429 - 435
    Cited by:  Papers (22)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    We report the first observation of third-harmonic generation (THG) in molecular gases. Using a CO2TEA laser and choosing molecules with vibrational transitions that contribute to a resonance enhancement of the third-order susceptibility tensor we have studied absolute conversion efficiencies, spectral response, and pressure dependences for THG in SF6, BCl3, and CO ... View full abstract»

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  • Proposed wide-band and low-drive-power electrooptic modulators

    Publication Year: 1976, Page(s):445 - 446
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    Novel methods for the wide-band and low-drive-power electrooptic modulators are proposed. This wide-band and low-drive-power performance is obtained by the utilization of relative electrical and optical delays. Both a lumped and a traveling-wave configuration are described. 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