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IEEE Journal of Quantum Electronics

Issue 4  Part 1 • Date April 1977

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Displaying Results 1 - 25 of 38
  • [Front cover and table of contents]

    Publication Year: 1977, Page(s): 0
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  • A study of a forced mode locked CW dye laser

    Publication Year: 1977, Page(s):101 - 109
    Cited by:  Papers (75)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2942 KB)

    A forced mode locked dye laser system capable of ultra-short pulse formation is examined experimentally, and the magnitudes and relative timing of the dye pulse, the pumping pulse, and the fluorescence are measured. Significant fast inversion loss of the gain medium is noted, and, for normal mode locked operation, only one pulse is observed to circulate in the cavity. A simplified model of the ope... View full abstract»

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  • Guest editorial

    Publication Year: 1977, Page(s): 121
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    Freely Available from IEEE
  • On a rigorous calculation of the efficiency for coupling light power into optical waveguides

    Publication Year: 1977, Page(s):165 - 173
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2449 KB)

    A generalized scattering matrices theory for open junctions between two dielectric waveguides is given, taking into account free modes and evanescent modes. This theory results in a formula giving the power launched from some incident wave into some guided mode as a cross product between the incident field and the field which is radiated by the junction when it is illuminated by the mode of intere... View full abstract»

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  • Absorption spectroscopy in scattering samples using integrated optics

    Publication Year: 1977, Page(s):173 - 176
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1130 KB)

    Conventional spectrophotometric methods for measuring the concentration of light-absorbing material in a sample require that the sample be transparent. If scatterers are present they disturb the absorption measurement. An example of this sort is the determination of the constituents in blood plasma. Red blood cells interfere with a direct optical measurement if they are not removed. Theory and exp... View full abstract»

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  • Analysis of an integrated twin-guide laser with coupled-wave theory

    Publication Year: 1977, Page(s):201 - 206
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1599 KB)

    The integrated twin-guide (ITG) laser consists of two parallel waveguides for the laser gain and the light output. Light-wave coupling between the two waveguides is analyzed with the help of coupled-wave theory, and the frequency-dependent oscillation conditions are obtained in an explicit form. It is concluded that single axial-mode oscillation is more realizable in an asymmetrical structure with... View full abstract»

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  • A modified zigzag-ray model of light propagation in a dielectric slab waveguide

    Publication Year: 1977, Page(s):215 - 219
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1502 KB)

    A modified zigzag-ray model of light propagation, in which the Goos-Hänchen shift and the associated time delay are included, is used to examine the applicability of a conventional zigzag-ray model for the calculation of the impulse response of a multimode cladded optical fiber. As a model of the fiber, a symmetric slab waveguide is considered, and it is shown that there exists a considerable... View full abstract»

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  • A frequency-multiplexing light source with monolithically integrated distributed-feedback diode lasers

    Publication Year: 1977, Page(s):220 - 223
    Cited by:  Papers (26)  |  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1529 KB)

    The details of the fabrication and performances of a monolithically integrated frequency-multiplexing light source are presented. The light source consists of six GaAs-GaAlAs distributed-feedback (DFB) diode lasers with different grating periods and passive GaAlAs waveguides. By changing the grating periods by ∼9 Å, the lasers lase with different wavelengths with a separation of ∼... View full abstract»

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  • Monolithic laser/waveguide coupling by evanescent fields

    Publication Year: 1977, Page(s):253 - 255
    Cited by:  Papers (7)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1112 KB)

    Evanescent field coupling without phase matching between a double heterostructure, monolithic laser and an "external" waveguide is reported. Coupling efficiencies as high as 25 percent have been obtained. View full abstract»

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  • An integrated-optical approach to the Fourier transform

    Publication Year: 1977, Page(s):268 - 275
    Cited by:  Papers (57)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2809 KB)

    A wide-band real-time spectrum analyzer is examined as a viable integrated optical circuit for processing electronic signals. The spectrum analyzer includes a Luneburg beam expansion lens system, a surface elastooptic Bragg spatial modulator, reflectors, a Luneburg Fourier-transform lens, and a waveguide coupled photodetector array, all formed on thermally grown SiO2on Si as the substra... View full abstract»

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  • Comparison of optical-waveguide lens technologies

    Publication Year: 1977, Page(s):275 - 282
    Cited by:  Papers (42)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2877 KB)

    Various materials, lens structures, and processes are examined relative to the lens requirements of an RF spectrum-analyzer implemented through the use of an integrated-optics format. Factors which distinguish optical-waveguide lenses and reflectors from conventional imaging lens systems are enumerated. It is concluded that a thin-film Luneburg lens is the most viable planar approach based upon th... View full abstract»

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  • An integrated optical waveguide and charge-coupled-device image array

    Publication Year: 1977, Page(s):282 - 287
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2386 KB)

    The device structure and experimental operation of an integrated optical waveguide and charge-coupled device (CCD) detector array are considered. The use of silicon as a substrate allows direct fabrication of the CCD detector array and a thermally oxidized layer of SiO2forms an effective substrate for waveguide deposition. The detector array is composed of a two-phase overlapping-gate C... View full abstract»

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  • Fast optical modulation of 10.6-µm radiation in GaAs waveguides by electrical injection

    Publication Year: 1977, Page(s):305 - 306
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    A GaAs p+-n-n+ diode has been used to study modulation of guided 1.15- and 10.6-μm radiation by electrical injection of free carriers. After irradiation with high-energy electrons to reduce the electron-hole recombination time, device rise and fall times in the nanosecond region are observed. View full abstract»

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  • [Back cover]

    Publication Year: 1977, Page(s): 0
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    Freely Available from IEEE
  • Infrared third-harmonic generation in phase matched CO gas

    Publication Year: 1977, Page(s):109 - 113
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1752 KB)

    Resonance-enhanced third-harmonic generation (THG) of CO2laser radiation has been studied in CO and NO. It is shown that the coherence length for THG in CO can be increased by adding SF6and that phase matching occurs for a CO:SF6ratio of 208:1. The pressure dependence of the third-harmonic conversion efficiency in CO-SF6mixtures has been measured up to 1... View full abstract»

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  • Metal-clad waveguide as cutoff polarizer for integrated optics

    Publication Year: 1977, Page(s):141 - 145
    Cited by:  Papers (40)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1616 KB)

    Propagation constants, attenuation, and field distributions of optical modes in dielectric waveguides clad by a thin metal layer are calculated. It is shown that by reducing the metal thickness, the attenuation of optical modes reduces in such a way that short metal-clad devices become possible even in thin guides with thicknesses near cutoff. As an application, a cutoff polarizer in symmetrical w... View full abstract»

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  • Avalanche initiating electron produced by laser-induced tunneling

    Publication Year: 1977, Page(s):117 - 119
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1104 KB)

    We have been able to eliminate all extrinsic sources of avalanche initiating electrons in ultrapure N2and He gas. Plasma formation is therefore inhibited until the laser intensity glows high enough to produce tunnel ionization of a molecule in the focal volume. This permits a record CO2laser intensity, as high as 1013W/cm2in a high-pressure gaseous targe... View full abstract»

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  • Single-mode coupling between fibers and indiffused waveguides

    Publication Year: 1977, Page(s):224 - 233
    Cited by:  Papers (8)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3168 KB)

    We have investigated two approaches for single-mode coupling between fibers and channel waveguides: evanescent field and end fire. In the pursuit of an evanescent fiber to film coupler, we have investigated an all adiabatic mode-liftoff structure which is needed to combat the mode-sinking problem in coupling between two waveguide-material systems with vastly different indices of refraction. Experi... View full abstract»

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  • Periodic structures for integrated optics

    Publication Year: 1977, Page(s):233 - 253
    Cited by:  Papers (85)  |  Patents (38)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5608 KB)

    This paper deals with the theory and device applications of periodic thin-film waveguides. Topics treated include mode solutions, optical filters, distributed feedback lasers (DFB), distributed Bragg reflector (DBR) lasers, grating couplers, and phase matching in nonlinear interactions. View full abstract»

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  • Infrared electrooptic waveguides

    Publication Year: 1977, Page(s):159 - 164
    Cited by:  Papers (6)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2320 KB)

    Design, fabrication and performance of low-loss infrared optical waveguides suitable for broad-band electrooptic modulation of CO2lasers are described. For high-power applications, a two-dimensional tapered ridge waveguide, which is fabricated by the ion-beam milling technique and bonded on a copper heat sink, is found to be the best choice. With a 15-W CO2laser of a beam siz... View full abstract»

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  • Nanosecond switching and amplification of multiline HF laser pulses

    Publication Year: 1977, Page(s):97 - 100
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1688 KB)

    Electrooptic gating and amplification of Pulses with durations from 1 to 5 ns were accomplished with a pulsed HF chemical laser system using SF6-hydrocarbon media and transverse-discharge energization. The system comprised an apertured, pin-discharge multiline oscillator, a MgF2Rochon prism polarizer, a Pockels-effect, fast electrooptic switch, a 5:1 magnifying telescope, and... View full abstract»

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  • Electrooptic-distributed Bragg-reflection modulators for integrated optics

    Publication Year: 1977, Page(s):206 - 208
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    The electrooptic-distributed Bragg-reflection modulators having periodically corrugated surfaces are proposed. Principles of distributed-feedback (DFB) and distributed Bragg-reflector (DBR) modulators are outlined and discussed. Calculations for the power per unit bandwidth indicate that the DBR modulator is much more effective than the DFB modulator. View full abstract»

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  • Convolution using guided acoustooptical interaction in thin-film waveguides

    Publication Year: 1977, Page(s):208 - 215
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2920 KB)

    Interaction of two antiparallel acoustic surface waves (ASW) with an optical guided wave has been investigated theoretically as well as experimentally to obtain the convolution of two ASW signals. The maximum time-bandwidth product that can be achieved by such a convolver is shown to be of the order of 1000 or more. The maximum dynamic range can be as large as 83 dB. View full abstract»

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  • Ti-diffused LiNbO3branched-waveguide modulators: Performance and design

    Publication Year: 1977, Page(s):290 - 295
    Cited by:  Papers (23)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2128 KB)

    We report here experimental studies of an amplitude modulator using Ti-diffused LiNbO3branched waveguides. In this paper we present experimental evidence in support of three problem areas connected with the improvement of performance of the device. Solution of the problems has involved the development of a new in-diffusion process to eliminate any background radiation, introduction of a... View full abstract»

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  • Focal characteristics of spheroidal geodesic lenses for integrated optical processing

    Publication Year: 1977, Page(s):129 - 134
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1872 KB)

    Aspheric shaping of geodesic lenses in optical waveguides is suggested as a means for correcting spherical aberrations. The technique is complementary to the method of Spiller and Harper, in which geodesic lens aberrations are reduced by thickening the waveguiding layer in the lens region. The properties of a family of oblate-spheroidal lenses with no third-order spherical aberrations are describe... 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