Notification:
We are currently experiencing intermittent issues impacting performance. We apologize for the inconvenience.
By Topic

Quantum Electronics, IEEE Journal of

Issue 8 • Date August 1980

Filter Results

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

    Publication Year: 1980 , Page(s): 0
    Save to Project icon | Request Permissions | PDF file iconPDF (671 KB)  
    Freely Available from IEEE
  • A multilevel model of XeF ground state kinetics

    Publication Year: 1980 , Page(s): 815 - 820
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2114 KB)  

    We present a multilevel model of energy transfer in the XeF ground electronic state due to collision-induced VT and dissociation processes. The model, whose parameters are based on experimental results presented here and on other recent data, should be useful in accurate simulations of output efficiency and multiline laser oscillation in XeF. Effective lifetimes of individual ground state levels, applicable to two-level laser models, are determined from the multilevel model. The effective lifetime of the primary lower laser level \upsilon is determined to be 4-6 ns for a 1 atm He buffer. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Quantum theory of third-harmonic generation in a gaseous system - Part I

    Publication Year: 1980 , Page(s): 843 - 849
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1916 KB)  

    We present a theoretical treatment for third-harmonic generation in gaseous systems by describing the atomic system as well as the radiation field quantum mechanically. The atomic system is represented by two energy levels. The effects of detuning in the two-photon interactions and the atomic motion on the third-harmonic generation are taken into account. The photon statistics of the third-harmonic field are obtained. The average photon number, second-order coherence, and output variance of the third-harmonic field are discussed. The above results show a nonlinear dependence on the detuning in the two-photon interactions and the Doppler parameter. View full abstract»

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

    Publication Year: 1980 , Page(s): 870 - 874
    Cited by:  Papers (19)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1803 KB)  

    A high speed sampling technique is proposed using a cascade of optical waveguide interferometers driven by CW sinusoidal traveling or standing microwaves. Each interferometer multiplies the optical signal by a function closely approximated by \cos^{4} \omega t , where ω is the frequency of its microwave drive. A cascade of four interferometers with 2.6 V microwave drives at 10, 20, 40, and 80 GHz and a total length of 2 cm can sample an optical signal with 2 ps resolution and 50 ps between samples. The sampler might be used in a picosecond sampling oscilloscope or in experiments requiring a jitter-free train of identical pulses. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Amplifying medium characteristics in optimized 190 µm/195 µm DCN waveguide lasers

    Publication Year: 1980 , Page(s): 885 - 890
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1855 KB)  

    Extensive study of the CW, dischaxge-pumped, DCN laser operating on the (2200-0910) 190 and 195 μm lines has been undertaken in order to develop a new source of radiation suitable for plasma diagnostics. The optimum values of the parameters of the discharge, the unsaturated gain, and the saturation intensity are given as a function of the tube diameter. Scaling laws predicting the maximum output power as a function of the tube dimensions and of the cavity loss are established. Such lasers compare favorably with optically pumped submillimeter lasers, since 250 mW are available from a 3 m long, 5 cm diameter waveguide DCN laser. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Semiconductor devices for optical communication

    Publication Year: 1980 , Page(s): 902
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (191 KB)  

    First Page of the Article
    View full abstract»

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

    Publication Year: 1980 , Page(s): 0
    Save to Project icon | Request Permissions | PDF file iconPDF (1636 KB)  
    Freely Available from IEEE
  • Temperature dependent phase-matched nonlinear optical devices using CdSe and ZnGeP2

    Publication Year: 1980 , Page(s): 838 - 843
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2176 KB)  

    Temperature tuning and stability of nonlinear optical devices employing CdSe and ZnGeP2are considered for the first time. From the measured refractive index data at room temperature and the corresponding appropriate temperature derivatives, Sellmeier coefficients are found for the evaluation of refractive indexes both below and above room temperature. These can be used to calculate phase-matching angles at different temperatures. We have evaluated temperature stability of phase-matching angles in tunable parametric oscillators and down-converters and also in up-converter operations which have been reported at room temperature. Temperature characteristics have been worked out for tunable generation of radiation near the 16 μm region in CdSe and the type II second-harmonic generation has been found to be possible for temperatures g\sim275\deg C in ZnGeP2because of its positive temperature coefficient in birefringence. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Long-span single-mode fiber transmission characteristics in long wavelength regions

    Publication Year: 1980 , Page(s): 874 - 884
    Cited by:  Papers (16)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (4112 KB)  

    Experimental and analytical results on high-speed optical pulse transmission characteristics for long-span single-mode fibers by using InGaAsP lasers, emitting at 1.1, 1.3, and 1.5 μm, as well as a Ge-APD are reported. At 1.1 μm, 400 Mbit/s transmission experiments were successfully carried out with 20 km repeater spacing. At 1.3 μm, where single-mode fiber dispersions approach zero, error rate characteristics showed that optical power penalties at 100 Mbits/s and 1.2 Gbits/s are negligible even after 30 and 23 km fiber transmission, respectively. It was confirmed that a 1.6 Gbit/s transmission system has 15 km repeater spacing. At 1.5 μm, where silica fibers have ultimately minimum loss, single-mode fiber transmission experiments were carried out at 100 Mbits/s with about 30 km repeater spacing. 400 Mbit/s transmission characteristics using 20 km fibers were also studied. Fiber bandwidths, measured by optical pulse broadenings after 20 km transmission, were 24, 140, and 37 GHz . km . nm at 1.1, 1.3, and 1.5 μm, respectively. Progress in lasers, fibers, and optical delay equalizers at 1.5μm will bring about large-capacity transmission systems having about 150 km repeater spacing. These results reveal fiber dispersion characteristics in the long wavelength region essential to high data rate single-mode fiber transmission system design. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Development of self-pulsations due to self-annealing of proton bombarded regions during aging in proton bombarded stripe-geometry AlGaAs DH lasers grown by molecular beam epitaxy

    Publication Year: 1980 , Page(s): 898 - 901
    Cited by:  Papers (1)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1448 KB)  

    Experimental observations indicate that the occurrence of optical self-pulsation in proton delineated stripe-geometry double-heterostructure junction lasers is related to the degree of gain guiding inherent in individual lasers. We show that an aging process occurs during lasing operation which has the effect of partially annealing the proton induced carrier removal concentration at the edges of the active stripe of the laser. In some lasers, the magnitude of this annealing effect is sufficiently large to flatten the active stripe carrier concentration profile thus reducing filament stability leading ultimately to optical self-pulsation. It is shown that the carrier concentration profile modification is due to the dual effects of decreasing the n = 2 nonradiative current component at the active stripe-proton bombarded interface as well as the geometric effect of increasing the laser active stripe width. This latter effect may be also responsible for some portion of laser threshold current increase observed during device operation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Transmission of organic laser dyes under inclusion of stimulated emission

    Publication Year: 1980 , Page(s): 890 - 897
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1992 KB)  

    This paper describes a theoretical study together with a few experimental results of nonlinear dye transmission under inclusion of the influence of stimulated emission, due to a high- Q optical resonator surrounding a transversely excited dye sample. The rate equation approach takes into account spatial attenuation of the exciting radiation. Formulas are derived for both the intensity dependent dye transmission and the resultant dye laser output intensity. The study comprises all relevant facts of dye laser operation, such as reabsorption, triplet effects, and excited state absorption (ESA). View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Hollow cathode metal ion lasers

    Publication Year: 1980 , Page(s): 820 - 834
    Cited by:  Papers (11)  |  Patents (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (5496 KB)  

    A new class of metal ion lasers with significant CW output power in the UV (220-320 nm) and near IR (800-2000 nm) spectral regions is described. In a hollow cathode discharge the upper laser levels are excited via charge transfer collisions between ground state buffer gas ions and ground state metal atoms. At the present stage of development, hollow cathode metal ion lasers are shown to be comparable in UV output power to rare-gas ion lasers but with lower threshold currents by a factor of more than twenty. Visible output powers are lower than rare-gas ion lasers. In the text we present device progress to date, measurements of important plasma parameters, and an outline of potential applications of hollow cathode metal ion lasers. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High-efficiency high-power UV generation at 2128 Å in urea

    Publication Year: 1980 , Page(s): 810 - 811
    Cited by:  Papers (1)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (584 KB)  

    Urea has been found to be phase matchable for type-1 fifth-harmonic generation by mixing the Nd:YAG laser fundamental and fourth-harmonic radiation at room temperature. A peak power as high as 4.5 MW with an average power of 320 mW was obtained at 2128 Å in a 5 mm long crystal. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Injection modulation in coupled laser oscillators

    Publication Year: 1980 , Page(s): 859 - 864
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1952 KB)  

    Injection modulation is the effect observed when laser oscillation is perturbed by an injected signal below the threshold of locking. In this regime the oscillation becomes a wave modulated in frequency as well as in amplitude. The modulation envelope has a characteristic waveform which depends on the amplitude and phase of the injected signal. Starting from the Lamb's equations for a dual-mode oscillator, we develop a theory of the injection modulation and calculate the waveforms in amplitude and frequency. The treatment applies both to the external injection into a laser and to the case of mutual coupling between two modes. Experimental results for a dual mode He-Ne laser are found to be in good agreement with the theory. It is pointed out how the injection modulation effects are appreciable even at very weak levels of injected amplitudes, e.g., down to 10-5with respect to the oscillation field amplitude. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Single frequency CW dye laser operation in the 690-700 nm gap

    Publication Year: 1980 , Page(s): 812 - 813
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (504 KB)  

    We report studies of two new CW red laser dyes, one of which fills in the gap of 690-700 nm in present single frequency dye laser coverage. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Selected two-color operation of a CO2laser

    Publication Year: 1980 , Page(s): 835 - 837
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1104 KB)  

    Two-color length measurement schemes have recently been proposed which require a multiwavelength laser source having means of laser frequency stabilization. A simple CO2laser can be adjusted and operated such that these requirements may be addressed. It is shown that through certain simple incremental length adjustments a specified two-color pair may be obtained. Other colors may be caused to appear in selectable sequence through further adjustment. An experimental laser is described in which these characteristics have been observed. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New InGaAs/InP avalanche photodiode structure for the 1-1.6 µm wavelength region

    Publication Year: 1980 , Page(s): 864 - 870
    Cited by:  Papers (28)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2480 KB)  

    Low dark current and low multiplication noise properties for an In0.53Ga0.47As/InP avalanche photodiode are described. The diode is prepared with an In0.53Ga0.47As light absorption layer and an InP avalanche multiplication region. The lowest dark current density of 5.2 \times 10^{-4} A/cm2is obtained at 90 percent of a breakdown voltage. Multiplication noise power is proportional to the 2.7th power of the current multiplication factor. Impact ionization coefficient by holes is larger by 2-3 times than that by electrons in View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Laser-induced breakdown in crystalline and amorphous SiO2

    Publication Year: 1980 , Page(s): 814
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (376 KB)  

    The 1.06 μm breakdown thresholds of crystalline and amorphous SiO2were compared. These materials showed dependences of the breakdown threshold on the focal volume which are consistent with a multiphoton-assisted electron avalanche damage mechanism. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • FM eliminated CH4locked frequency stabilization of 3.39 µm He-Ne laser in dual feedback control

    Publication Year: 1980 , Page(s): 854 - 859
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2128 KB)  

    The frequency of the 3.39 μm He-Ne laser was locked to the CH4saturated absorption line by means of integral-proportional feedback control, i.e., dual feedback control. The frequency modulation was applied by a vibrating mirror placed outside a laser cavity, obtaining a modulation-free laser beam with a stabilized frequency. The long-term stability achieved under integral feedback control was about \pm1.1 \times 10^{-11} , which was further improved to \pm1.35 \times 10^{-12} under dual feedback control. The Allan variance measured by the photomixing technique was 1.77 \times 10^{-12} at an averaging time 100 s. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Steady-state stimulated Raman scattering by a multimode laser

    Publication Year: 1980 , Page(s): 850 - 853
    Cited by:  Papers (12)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1120 KB)  

    The development of the Stokes spectrum and the dependence of Raman gain upon pump laser bandwidth in a narrow linewidth Raman medium are analyzed in terms of a closed set of multimode equations. The analysis predicts that the Stokes gain coefficient takes on its maximum value, which is independent of bandwidth, when the Stokes spectrum replicates the pump spectrum. It is also shown that in the absence of dispersion the spectrum of a weak Stokes wave is driven to duplicate the pump spectrum, and that for noise input the average power generated in the Stokes wave is independent of the pump bandwidth. 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