By Topic

Quantum Electronics, IEEE Journal of

Issue 3 • Date March 1985

Filter Results

Displaying Results 1 - 18 of 18
  • [Front cover and table of contents]

    Publication Year: 1985 , Page(s): 0
    Save to Project icon | Request Permissions | PDF file iconPDF (769 KB)  
    Freely Available from IEEE
  • Announcing a joint special issue of the IEEE journal of quantum electronics and the journal of lightwave technology on integrated optics

    Publication Year: 1985 , Page(s): 178
    Save to Project icon | Request Permissions | PDF file iconPDF (237 KB)  
    Freely Available from IEEE
  • A miniature high-power KrF laser excited with a capacitively coupled discharge

    Publication Year: 1985 , Page(s): 191 - 193
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1048 KB)  

    A KrF excimer laser excited in a capacitively coupled discharge device made out of commercial BaTiO3doorknob capacitors is described. The discharge volume of 1.4 cm3is formed by a 3 mm bore into four capacitors glued together in a line. A maximal laser output energy of 1.7 mJ (1.2 J/l) in a 5.0 ns long pulse was achieved. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Amplification of picosecond 10 µm pulses in multiatmosphere CO2lasers

    Publication Year: 1985 , Page(s): 216 - 232
    Cited by:  Papers (15)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (6558 KB)  

    Picosecond pulses, generated by semiconductor switching (2-40 ps), have been regeneratively amplified to an energy density of ∼1.5 J/cm2in a multiatmosphere CO2laser. The characteristics of the amplified pulses have been investigated as a function of wavelength, pulse duration, and the pressure in the gain medium. Using a high-power pulse compression technique, 10 μm pulses as short as 600 fs have been obtained. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Compensation of internal thermal stresses in InGaAsP/InP lasers for polarization stabilization

    Publication Year: 1985 , Page(s): 271 - 277
    Cited by:  Papers (2)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1834 KB)  

    Internal thermal stresses in the active layer of a conventional InGaAsP/InP laser may cause polarization instabilities which normally do not exist in conventional AlGaAs/GaAs lasers. We analyze a structure with a buffer layer for Polarization stabilization by compensation of the internal thermal stresses in InGaAsP/InP lasers. Stress analyses are carried out for various structures to obtain the conditions for optimal stress-free structures. The effects of stresses from external sources are also discussed. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • [Back cover]

    Publication Year: 1985 , Page(s): 0
    Save to Project icon | Request Permissions | PDF file iconPDF (1075 KB)  
    Freely Available from IEEE
  • Efficient generation of picosecond coherent tunable radiation between 190 and 212 nm by sum-frequency mixing from Raman and optical parametric radiations

    Publication Year: 1985 , Page(s): 193 - 195
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1080 KB)  

    An efficient sum-frequency mixing of optical parametric radiation and stimulated Raman radiation has been used to generate picosecond continuously tunable coherent radiation ranging from 190 to 212 nm with energies of 20-40 \mu J. An ordinary KDP crystal was phase-matched by using a combination of long and short wavelength incident waves. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Coupled-cavity semiconductor lasers under current modulation: Small-signal analysis

    Publication Year: 1985 , Page(s): 255 - 263
    Cited by:  Papers (10)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2976 KB)  

    The modulation characteristics such as the power response and the chirp (dynamic line broadening) of single-frequency coupled-cavity semiconductor lasers are analyzed theoretically. The model is based on the small-signal analysis of a set of generalized rate equations and neglects the lateral variations of the optical field and the carrier density in the two cavity sections. When the controller section is biased below threshold in a three-terminal device the modulation response is not significantly affected by the intercavity coupling. By contrast, new features arise when both sections are biased above threshold. It is found that the chirp can be significantly reduced by a proper combination of the bias levels and the modulation splitting between the two sections. The chirp reduction also depends on the strength of the intercavity coupling and its phase, and the best performance is achieved for the case of in-phase coupling. The calculated results are in qualitative agreement with the reported experimental data and are useful as a guide to optimize the performance of a coupled-cavity device. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Diagrammatical analysis of phase conjugation using four- and three-wave mixing processes in Kerr-like nonsaturated media

    Publication Year: 1985 , Page(s): 182 - 187
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1488 KB)  

    Double-sided Feynman diagrams, which trace the evolution of the density operator in time during a nonlinear optical interaction, are used to analyze the processes of four- and three-wave mixing which lead to the production of phase conjugate waves. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Excimer ions as possible candidates for VUV and XUV lasers

    Publication Year: 1985 , Page(s): 179 - 181
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1096 KB)  

    Optical transitions in ionic excimer molecules seem to be suitable candidates for lasers in the VUV and XUV region. Potential curves, transition wavelengths, radiative lifetimes, and cross sections for stimulated emission are calculated for several alkali halide ions. In addition, possible laser transitions in rare gas halide ions are briefly discussed. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Frequency tuning characteristics of a Q-switched Co:MgF2laser

    Publication Year: 1985 , Page(s): 202 - 208
    Cited by:  Papers (3)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2512 KB)  

    A tunable Q -switched Co:MgF2laser has been developed for atmospheric remote sensing applications. Frequency tuning is provided by a quartz etalon and a specially designed three-element birefringent filter covering the whole gain bandwidth of the Co : MgF2laser. The laser has good temporal and spectral characteristics, with an emission linewidth of approximately 3 GHz (0.1 cm-1). View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Quantum noise and excess noise in optical homodyne and heterodyne receivers

    Publication Year: 1985 , Page(s): 237 - 250
    Cited by:  Papers (17)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (4568 KB)  

    A parallel development of the semiclassical and quantum statistics of multispatiotemporal mode direct, homodyne, and heterodyne detection using an ideal (except for its subunity quantum efficiency) photon detector is presented. Particular emphasis is placed on the latter two coherent detection Configurations. The primary intent is to delineate the semiclassical theory's regime of validity and to show, within this regime of validity, how the quantum theory's signal quantum noise, local oscillator quantum noise, the quantum noise incurred because of subunity detector quantum efficiency, plus (for heterodyning only) image band quantum noise produce the quantitative equivalent of the semiclassical theory's local oscillator shot noise. The effects of classical fluctuations on the local oscillator, and the recently suggested dual-detector arrangement for suppressing these fluctuations, are treated. It is Shown that previous studies of this arrangement have neglected a potentially significant noise contribution. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Measurement of stimulated transverse mode mixing in a free electron laser

    Publication Year: 1985 , Page(s): 208 - 215
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2824 KB)  

    We report the first measurement of the off-diagonal terms in the transverse gain matrix in a free electron laser. We show that the higher order transverse modes stimulated in the FEL interaction diminish in amplitude as the electron beam size is increased, that the far field and the near field effects of the excited modes are not equivalent, and that in this low divergence case, the mode mixing is insensitive to the resonance parameter. Remarkably close agreement is demonstrated with the theory [1]. The effects of a multiple mode input beam are also observed, and the theoretical expression is derived. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of avalanche build-up time on avalanche photodiode sensitivity

    Publication Year: 1985 , Page(s): 251 - 255
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1592 KB)  

    A calculation method for the receiver sensitivity of an avalanche photodiode is considered, taking into account avalanche build-up time and carrier transit time, in addition to the CR time constant. Actual receiver performance is estimated in a high data rate region of up to 10 Gbits/s for germanium avalanche photodiodes, applying the measured avalanche build-up time. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Attainment of frequency stable high-energy operation of a CO2TEA laser by use of a telescopic resonator

    Publication Year: 1985 , Page(s): 188 - 191
    Cited by:  Papers (3)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1528 KB)  

    We describe a hybrid electron-beam sustained TEA CO2oscillator using a stable telescopic resonator with a magnification of four. This optical configuration results in good mode selection and a large (11.2 mm e-2radius). TEM00mode. Heterodyne determinations reveal that the intrapulse frequency is constant within the experimental accuracy of 50 kHz at the 1 J output level for pulses of duration 3 μs. These results are consistent with the theory of laser-induced medium perturbations. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The effect of weak dispersion on stimulated Raman scattering

    Publication Year: 1985 , Page(s): 232 - 236
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1800 KB)  

    The Raman gain of an undepleted plane-wave multimode pump laser is calculated. The Stokes and pump fields are represented as vector states in a Hilbert space, and the Dirac bracket notation is introduced to simplify the form of the equations. It is shown that in the absence of dispersion the Stokes vector component correlated with the pump grows exponentially with the monochromatic-pump gain, while all other Stokes components experience zero growth. Perturbation theory is used to second order to determine the gain decrease resulting from relative dispersion between pump and Stokes, and the results are compared with previous works. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Single-frequency, single-knob tuning of a CW color center laser

    Publication Year: 1985 , Page(s): 195 - 201
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2208 KB)  

    We describe a simple way to achieve CW single-frequency laser operation with a grating as the sole tuning element. It is Shown, both experimentally and theoretically, that by proper choice of cavity parameters, the competing hole burning modes can be completely suppressed. Experiments to demonstrate the theoretical calculations were carried out in a CW color center laser using Tl0(1) centers. Linewidths of 0.01 cm-1were obtained and this figure can probably be much improved by proper cavity stabilization. The method can be readily extended to any compact gain medium. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of mirror imperfections on phase-locked semiconductor laser arrays

    Publication Year: 1985 , Page(s): 264 - 270
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2672 KB)  

    Phase-locked semiconductor laser arrays normally have far-field-radiation patterns broader than that predicted by theory. We propose a possible broadening mechanism caused by steps on the cleaved mirror facets and by misalignment of the laser guide with respect to the laser facet. In the presence of facet steps, supermodes are coupled upon reflection. To satisfy the round-trip threshold condition, a laser cavity mode has to be an admixture of supermodes. This results in a broader far-field pattern (FFP) than that of a single supermode. Asymmetry of the pattern can also be predicted by this model. For an array of 10 lasers with center-to-center spacing of 8μm, the FWHM angle in the FFP of the lowest cavity mode is broadened by 1.5 and 2.5 folds, respectively, for random steps of average heights 17 and 90 Å between adjacent lasers. The broadening factor is 2.3 when a single 204 Å step exists between the third and the fourth laser. If the laser cavity is not aligned perpendicular to the facet, significant change in the FFP occurs only for a civity length not much shorter than the coupling length. A general consequence of the supermode mixing is the diminution of the threshold gain difference among the cavity modes, encouraging their simultaneous excitation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

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