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Quantum Electronics, IEEE Journal of

Issue 5 • Date May 1980

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Displaying Results 1 - 21 of 21
  • [Front cover and table of contents]

    Publication Year: 1980 , Page(s): 0
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    Freely Available from IEEE
  • Integrated output power detection for AlGaAs laser array

    Publication Year: 1980 , Page(s): 502 - 504
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1009 KB)  

    A linear array of closely spaced AlGaAs lasers is mounted on an Si heat sink. Schottky diode detectors formed on the same Si chip provide optical sensing and electrical feedback signals for output power stabilization of the individual laser elements. The performance of a typical pair of adjacent devices is tested showing that electrical and optical crosstalk between lasers is virtually eliminated. View full abstract»

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  • Antennas and waveguides for far-infrared integrated circuits

    Publication Year: 1980 , Page(s): 508 - 516
    Cited by:  Papers (21)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3305 KB)  

    Antennas and waveguides for the wavelength range 0.1-3 mm are considered. Emphasis is placed on those designs which lend themselves to integration with each other and with other components such as diodes. The general properties of FIR antennas are reviewed. A novel silicon waveguide antenna is discussed, and its design, simulation, fabrication, and performance at 119 μm are described. This antenna has a highly symmetrical, single-lobed beam with 3 dB beamwidths of 35 and 38° in the E - and H -planes, respectively. The gain (measured in microwave simulation) is 12.8 dB. This antenna is well suited for integration with Schottky diodes. The related subject of FIR waveguides is discussed. Experiments with metal transmission lines at 119 μm are described and dielectric guides related to the waveguide antenna are also considered. Using components such as these it may soon be possible to construct receiver front ends for this wavelength range in integrated-circuit form. View full abstract»

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  • A linearized theory for the diode laser in an external cavity

    Publication Year: 1980 , Page(s): 525 - 531
    Cited by:  Papers (18)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2269 KB)  

    A simple model for a semiconductor diode laser in an external cavity is developed. The stability and small-signal modulation characteristics of the new model is investigated and compared with experiment. View full abstract»

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  • Nonlinearities of GaAlAs lasers - Harmonic distortion

    Publication Year: 1980 , Page(s): 531 - 537
    Cited by:  Papers (24)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2406 KB)  

    Narrow stripe lasers ( 2-6 \mu m) and transverse junction lasers exhibit excellent linearity. The dependence of relative second-and third-harmonic distortion is investigated as a function of modulation frequency and modulation current. Relative second- and third-harmonic distortion of -50 and -70 dB is observed for an optical signal of 4 mW p-p ( f_{m} = 60 MHz). Intermodulation products are compared with the harmonic distortion and good agreement is obtained between the two quantities when the relations for a simple nonlinearity without memory are used. The measured distortion is in agreement with distortion calculated from rate equations. View full abstract»

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  • Additional CW far infrared laser lines from CO2laser pumped cis 1,2 C2H2F2

    Publication Year: 1980 , Page(s): 574 - 575
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (591 KB)  

    Six new CW far infrared laser lines are reported for the cis 1, 2 C2H2F2molecule optically pumped by a CO2laser. Of these, two have high conversion efficiencies in the 1-2 percent range. View full abstract»

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  • Author's reply

    Publication Year: 1980 , Page(s): 575
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    First Page of the Article
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  • Comments on "Transverse mode stabilized AlxGa1-xAs injection lasers with channeled-substrate-planar structure"

    Publication Year: 1980 , Page(s): 575
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    First Page of the Article
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  • Correction to "Optical parametric amplification"

    Publication Year: 1980 , Page(s): 575
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    First Page of the Article
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  • Laser spectroscopy IV

    Publication Year: 1980 , Page(s): 576
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    First Page of the Article
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  • [Back cover]

    Publication Year: 1980 , Page(s): 0
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    Freely Available from IEEE
  • Propagation analysis of forward degenerate four-wave mixing

    Publication Year: 1980 , Page(s): 558 - 566
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2680 KB)  

    We discuss the propagation problem associated with the forward four-wave degenerate mixing induced by the third-order non-linear susceptibility \chi _{(-\omega ; \omega , \omega , -\omega )}^{(3)} = \chi _{1}^{(3)} + i\chi _{2}^{(3)} . Exact analytical solutions are presented of two-photon resonances, evidencing the influence of the Kerr effect on the efficiency of the process. Around a two-photon resonance, we solve the problem of the nearly parallel propagation of two beams undergoing auto and induced two-photon absorption (TPA). The resonant interaction is studied in detail and analytical solutions are provided with operational accuracy for current experimental conditions. We show by the way that in the two-beam two-photon experiments, when the phase matching condition is fulfilled, although TPA is governed by \chi _{2}^{(3)} , the real part of \chi ^{(3)} must be considered in a substantial way. All the above solutions are put in a form simple enough that the numerical computations can be performed on a programmable calculator. View full abstract»

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  • Injection locking of an optically pumped FIR laser

    Publication Year: 1980 , Page(s): 498 - 499
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (704 KB)  

    Phase locking of optically pumped far-infrared lasers to highly stable synthesized signals is an interesting goal, at least for metrological purposes. In this paper, the possibility of obtaining such a stabilization by injection of the reference signal into the laser is investigated, and from the results obtained, it is inferred that this technique can be efficiently used in the frequency range up to 1 THz. View full abstract»

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  • Computer simulated rate processes in copper vapor lasers

    Publication Year: 1980 , Page(s): 550 - 558
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3152 KB)  

    A computer model for metal vapor lasers has been developed which places emphasis on the change of excited state populations of the lasant through inelastic collisions and radiative interaction. Also included are an energy equation for the pumping electrons and rate equations for laser photon densities. Presented are results of calculations for copper vapor with a neon buffer over a range of conditions. General agreement with experiments was obtained. View full abstract»

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  • Pump depletion and saturation of two-photon resonant third-harmonic generation processes

    Publication Year: 1980 , Page(s): 566 - 573
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2848 KB)  

    Theoretical efficiency limitations for a two-photon resonant third-harmonic generation (THG) process are analyzed in a treatment which includes all nonlinear processes associated with the two-photon resonance assuming negligible material excitation. Results are presented for both collimated-beam and tight-focusing geometries. The theory is applied to experimental results for THG of CO2laser radiation in liquid CO-O2mixtures; good agreement is found for the observed saturation in the THG efficiency in a tight-focusing geometry. View full abstract»

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  • Effects of auger recombination process on laser dynamics

    Publication Year: 1980 , Page(s): 538 - 541
    Cited by:  Papers (1)
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    The effects of the Auger recombination process on solid-state laser dynamics are analyzed theoretically. The Auger effects on fluorescence lifetime, relaxation oscillations, spatial hole burning, and output powers are given by examining rate equations including the Auger parameter. View full abstract»

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  • Punch-through type InGaAs photodetector fabricated by vapor-phase epitaxy

    Publication Year: 1980 , Page(s): 542 - 545
    Cited by:  Papers (6)
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    Punch-through type InGaAs/InP photodiodes were made from high purity layers grown on View full abstract»

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  • Optimum output efficiency of homogeneously broadened lasers with constant loss

    Publication Year: 1980 , Page(s): 546 - 549
    Cited by:  Papers (6)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1248 KB)  

    The exact solution of a laser power extraction model is analyzed that relates the extraction efficiency with the laser parameters such as output coupling, small-signal gain, absorption loss, and laser cavity length. The model assumes a stable optical resonator and a homogeneously broadened gain medium. Optimum output coupling and resulting maximum extraction efficiency are determined for a range of values of the small-signal gain and absorption loss per pass. A relation is derived that allows determination of the intrinsic laser parameters from output power measurements when output mirrors are utilized with three different reflectances. View full abstract»

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  • Tunable picosecond pulse generation by an N2laser pumped self Q-switched distributed feedback dye laser

    Publication Year: 1980 , Page(s): 517 - 524
    Cited by:  Papers (12)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2416 KB)  

    The temporal characteristics of a distributed feedback dye laser are investigated both theoretically and experimentally. It is shown that the feedback is provided by the gain modulation and that the effect of refractive index modulation is negligible. The solution of the coupled rate equations predicts the generation of picosecond pulses. The mechanism of short pulse formation is self Q -switching which differs fundamentally from mode locking. A novel experimental arrangement for pumping the distributed feedback laser is described which makes it possible to obtain transform-limited pulses even with a partially coherent pumping source such as the N2laser. The experimental results show excellent qualitative and satisfactory quantitative agreement with the computer solutions. A very simple and reliable method for generation of tunable, nearly transform-limited single pulses with 36 ps duration (FWHM) is demonstrated experimentally. The feasibility of picosecond and subpicosecond pulse generation in the entire visible and near IR region is discussed. View full abstract»

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  • Pulsed FIR emission from isotopic methyl fluoride

    Publication Year: 1980 , Page(s): 505 - 508
    Cited by:  Papers (2)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1288 KB)  

    High intensity optical pumping of isotopic methyl fluoride (C13H3F) has yielded two new emission lines at 388 and 412 μm with powers of ∼10 kW and ∼1 kW, respectively. Experimental observations lead to the interpretation that these lines are pumped via a new mechanism in which collisionally coupled two-photon absorptions are responsible for the population inversion. View full abstract»

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  • Comparison between lasers isolated by oxygen implantation and SiO2isolated stripe lasers

    Publication Year: 1980 , Page(s): 500 - 502
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (968 KB)  

    GaAs/GaAlAs DH lasers isolated by an SiO2layer on top of the p-contacting layer are compared to DH lasers in which the isolation is maintained by an isolating the O+ -implanted layer within the n+- substrate. Measurements were performed on four O+ isolated lasers and five SiO2isolated lasers with the same composition and thickness of active and upper confinement layers. Threshold currents of both groups were very similar, whereas the O+ -implanted lasers showed superior thermal resistances by a factor of 2. Thermal resistances were measured by the shift of the lasing spectra with power dissipation. 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