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IEEE Journal of Quantum Electronics

Volume 14 Issue 6 • June 1978

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

    Publication Year: 1978, Page(s): 0
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    Freely Available from IEEE
  • Stark cell noise reduction of a CO2laser beam

    Publication Year: 1978, Page(s):391 - 393
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (294 KB)

    A technique is demonstrated for reducing the rapid intensity fluctuations in the beam of a single frequency, polarized CO2laser tuned to theP(20)transition at 10.6 μm. The method uses a Stark-tunable absorption line in NH2D to compensate for the fluctuations of the laser output. Substantial reductions in laser beam intensity noise have been obtained. The metho... View full abstract»

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  • 10 GHz bandwidth traveling-wave LiNbO3optical waveguide modulator

    Publication Year: 1978, Page(s):394 - 395
    Cited by:  Papers (24)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    A broad-band traveling-wave electrooptic modulator of Ti-diffused LiNbO3optical waveguide was designed, constructed, and tested at 0.63 μm over a bandwidth of 10.5 GHz. Using a novel asymmetric electrode configuration as a microwave waveguide, practically smooth frequency response of the modulator was obtained. For 300 mW drive power, the phase modulation index was 1 rad at 2 GHz a... View full abstract»

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  • Stability of passively mode-locked pulses in the fast absorber limit

    Publication Year: 1978, Page(s):396 - 398
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (263 KB)

    We have reexamined the stability criterion derived by Haus in the analysis of a laser system which is passively mode locked by a fast saturable absorber. In his stability analysis, Haus required perturbationsdeltaupsilon(t)of the formdeltaupsilon(t) = (sech (t/tau_{p}))^{nu}where τpis the steady-state pulsewidth and ν is a parameter which is varied, to be... View full abstract»

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  • A single-heterostructure MOS injection laser

    Publication Year: 1978, Page(s):398 - 401
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (451 KB)

    A single-heterostructure metal-oxide-semiconductor (MOS) diode is proposed to obtain laser action in direct-gap semiconductors. Conditions are outlined to achieve a higher minority-carrier injection ratio γ than is generally obtained in the metal-semiconductor Schottky diodes. Emitted photons are confined in the active layer by a novel combination of heterostructure dielectric discontinuity o... View full abstract»

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  • A simple first positive system nitrogen laser for use in optical fiber measurements

    Publication Year: 1978, Page(s):402 - 404
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (305 KB)

    A near infrared laser operating on several transitions of the first positive system of N2was developed for measurements associated with optical fibers. The laser features a simple, longitudinal, segmented design giving pulsewidths of 60 to 80 ns full width at half maximum (FWHM) and peak powers of over 600 W in the 0.86 to 0.89 μm region in addition to significant output near 1.04 ... View full abstract»

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  • A transversely excited copper halide laser with large active volume

    Publication Year: 1978, Page(s):405 - 407
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    Operation of a pulsed copper halide laser excited by transverse discharge and with an active volume of 250 cm3is reported. Total laser output pulse energies (at λ5106 and 5782 Å combined) of 2.5 mJ per pulse and peak powers exceeding 100 kW have been achieved in the double-pulse mode with CuBr as the lasant. View full abstract»

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  • Spark control cavity dumping

    Publication Year: 1978, Page(s):407 - 409
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (490 KB)

    The intracavity laser driven plasma was used to dump the laser. The computer simulation shows the possibility of obtaining intense several nanosecond pulses. The ruby laserQ-switched by the saturable dye simultaneously dumped by an intracavity laser driven spark in the air, at atmospheric pressure, produces 100 MW, 6 ns pulses. View full abstract»

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  • HF and DF laser action by a pulsed microwave discharge

    Publication Year: 1978, Page(s):411 - 413
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (326 KB)

    A pulsed electrodeless microwave discharge withE-field enhancement by a tapered waveguide has been employed to produce HF and DF laser radiation from premixtutes of SF6+ H6and SF6+ D2. The 720 patm (690 patm) HF (DF) laser had an average multiline output power of 6 mW (1 mW) for an efficiency of 0.1 percent (0.02 percent) while operating at 1 ... View full abstract»

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  • Analysis of gain-induced waveguiding in stripe geometry diode lasers

    Publication Year: 1978, Page(s):418 - 427
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (960 KB)

    This paper analyzes two-dimensional waveguiding in stripe geometry diode lasers. Refractive index discontinuities guide the light by total internal reflection in the direction perpendicular to the p-n junction plane, but the guidance mechanism along the p-n junction and transverse to the propagation direction is that of gain variation. In the active region, the gain is a maximum under the pump str... View full abstract»

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  • Principles and applications of ferroelectrics and related materials

    Publication Year: 1978, Page(s):450 - 451
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    First Page of the Article
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  • Optical fiber technology

    Publication Year: 1978, Page(s): 451
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (119 KB)

    First Page of the Article
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  • [Back cover]

    Publication Year: 1978, Page(s): 0
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    Freely Available from IEEE
  • Modes in optical waveguides formed by silver-sodium ion exchange

    Publication Year: 1978, Page(s):389 - 391
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    Exact solutions of the scalar wave equation for the guided modes of planar optical waveguides formed by silver-sodium ion exchange have been obtained. It has been shown that there is good agreement between the exact solution and the solution obtained by using the Wentzel-Kramer-Brillouin (WKB) approximation. View full abstract»

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  • Periodic pulse solutions and stability in the fast absorber model

    Publication Year: 1978, Page(s):443 - 450
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    In the theory of passive mode locking with a fast saturable absorber as formulated by Haus [1], the mode-locking equations can be satisfied by periodic solutions which are described in terms of Jacobian elliptic functions. These solutions have been used by Ausschnitt [4] in his theory of transient mode locking. Here we reexamine the Jacobian elliptic dnoidal solutions and operating points, and sho... View full abstract»

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  • High temperature studies of electron-beam pumped argon-nitrogen laser characteristics

    Publication Year: 1978, Page(s):434 - 436
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Gain and laser output power of an electron beam pumped Ar-N2mixture were measured over the temperature range 25 to 350°C. The gain is about 0.6 cm-1at room temperature, and increases to almost 1 cm-1at 250°C. The laser performance at elevated temperatures was determined using a specially designed high temperature resonator. The fluorescence yield and lase... View full abstract»

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  • Asymmetric modes in oxide stripe heterojunction lasers

    Publication Year: 1978, Page(s):413 - 417
    Cited by:  Papers (6)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    The region between the pair of heterojunctions of an oxide stripe laser is modeled by a step profile in the lateral distribution (parallel to the heterojunctions) of the gain and of the refractive index, in an attempt to gain insight about the interpretation of the asymmetric radiation patterns frequently observed. A region of width Waconcentric with the stripe contact is subdivided int... View full abstract»

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  • Effect of waveguide optical scattering on the integrated optical spectrum analyzer dynamic range

    Publication Year: 1978, Page(s):437 - 443
    Cited by:  Papers (28)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (872 KB)

    The dynamic range limited by optical scattering in the integrated optical spectrum analyzer is considered. Calculations of dynamic range as a function of waveguide attenuation and surface roughness characteristics are presented. Dynamic range is found to decrease with increasing attenuation, to be nearly independent of the surface roughness correlation length for a fixed attenuation, and to be ind... View full abstract»

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  • Excitation mechanism of the Cd(II) 441.6 nm laser in the positive column He-Cd discharge

    Publication Year: 1978, Page(s):427 - 433
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (896 KB)

    The population densities of the upper and lower states of the Cd(II) 441.6 nm laser line in the positive column He-Cd discharge were determined experimentally with the modified absorption method and gain measurements. It has been shown that the influence of the population density of the laser lower state on the laser output power is very large and cannot be neglected in interpreting the saturation... View full abstract»

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  • Figure of merit for some pulse laser applications

    Publication Year: 1978, Page(s):409 - 411
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    The application requirement on lasers can be expressed by a figure of merit. Born and Wolf separated the brightness and a time-bandwidth product of a light source. We examine some pulse laser applications and demonstrate that the ratio of the brightness and the spectral width defined as the spectral brightness can be used as a figure of merit for a laser source in most applications. 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