By Topic

Quantum Electronics, IEEE Journal of

Issue 8 • Date August 1966

Filter Results

Displaying Results 1 - 25 of 37
  • [Front cover and table of contents]

    Publication Year: 1966 , Page(s): 0
    Save to Project icon | Request Permissions | PDF file iconPDF (301 KB)  
    Freely Available from IEEE
  • 1A1 - Photoelectron statistics produced by a laser operating below and above the threshold of oscillation

    Publication Year: 1966 , Page(s): 190 - 195
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (970 KB)  

    A simple semiclassical derivation is given of the statistics of the photoelectrons emitted from a photosurface illuminated by light with statistically time dependent intensity. Comparison is made with the quantum mechanical expressions. Experiments are described that yield the probability of emission of n photoelectrons within a fixed time interval from a photo... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 1C4 - Infrared difference frequency generation

    Publication Year: 1966 , Page(s): 196 - 201
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (899 KB)  

    Several molecular vibrational frequencies have been generated by beating together a laser and laser-stimulated Raman emission. A Nd3+/glass laser was used to excite Raman emission from C6H6, C6D6, and CH3. NO2. The difference frequencies were generated in a single crystal of CdS and appeared at 992, 944, and 927 cm... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 1C6 - Cyclotron resonance in semiconductors with far infrared laser

    Publication Year: 1966 , Page(s): 202 - 207
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1183 KB)  

    The quantum effects in the degenerate valence bands of germanium have been observed as multiple cyclotron resonance absorption lines at a temperature of 165°K. Additional lines were resolved at 40°K. The combination of high intensity magnetic fields up to 180 000 gauss and the output power of a cyanide submillimeter laser (0.337 millimeters) was used. The construction and operation of a ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2A4 - Analysis of room temperature CW ruby lasers

    Publication Year: 1966 , Page(s): 208 - 214
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1709 KB)  

    Ruby lasers of between 10 mm and 75 mm length were operated continuously at room temperature in ellipsoidal pumping systems. Mode selection, relaxation oscillations, mode interaction, and thermal effects are described. CW operation was also studied with external mirrors, in 100 c/s giant pulse emission, and in single-mode emission. A ruby Pulslaser is described, that can be operated in 1 ms pulses... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2A10 - Laser experiments for determining satellite orbits

    Publication Year: 1966 , Page(s): 215 - 219
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1047 KB)  

    The results from a series of experiments at the Smithsonian Astrophysical Observing Station, Organ Pass, N. Mex., indicate how lasers may be used to supplement the worldwide network of Baker-Nunn cameras in obtaining precise satellite orbits for geodesy and other purposes. A pulsed ruby laser and photoelectric receiver were located at the observing station. Laser returns were obtained from the thr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 4A3 - Intensity fluctuations in the output of laser oscillators

    Publication Year: 1966 , Page(s): 219 - 221
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (481 KB)  

    Using population rate equations, we have calculated the intrinsic intensity fluctuations expected in the output of 3-level and 4-level CW laser oscillators. Such fluctuations stem from the quantum shot noise implicit in a restriction of the atomic and photon population-operator eigenvalues to discrete integral values (in the manner of Shimoda, Takahasi, and Townes). The intrinsic fluctuations belo... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 4A5 - Radiation interactions between laser oscillators with different active elements and different frequency

    Publication Year: 1966 , Page(s): 222 - 229
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1609 KB)  

    This paper presents a novel problem in laser dynamics, where two lasers using different active material with different frequency produce radiation interaction. In the first experiment, we performed a study on the effect of radiation coupling of the giant pulse ruby laser on the Nd3+-glass laser under normal oscillation. It was found that the sudden enchancement followed by the quenching... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 4B7 - Precision spectroscopy of new infrared emission system of molecular nitrogen

    Publication Year: 1966 , Page(s): 229 - 232
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (543 KB)  

    Stimulated emission and laser oscillation resulting from transient population inversions on a number of electronic transitions of molecular nitrogen have made it possible to more accurately specify energy differences between several excited singlet states of the molecule and in one case, that of the w ^{1}\Delta _{u} state, to more directly determine its abso... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 4C5 - A zero-field maser oscillator

    Publication Year: 1966 , Page(s): 233 - 235
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (512 KB)  

    A solid-state zero-field maser oscillator has been experimentally investigated to determine the power, stability, and spectral purity which may be expected in this type of device. The maser operates in a zero-field configuration and uses the ferric ion substituted as an impurity in an aluminum nitrate host crystal. Single-crystal and powder samples were used in the experiments, and a comparison be... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 5B1 - Measurement of saturation induced optical nonreciprocity in a ring laser plasma

    Publication Year: 1966 , Page(s): 235 - 243
    Cited by:  Papers (10)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1917 KB)  

    When a gas laser plasma is illuminated by unequally intense laser beams traveling in opposing directions, its index of refraction becomes significantly nonreciprocal. We have studied this effect by measuring the beat frequency between the counter-rotating beams in a 6328Å He-Ne ring laser under controlled conditions. Frequency locking was effectively eliminated by using a Faraday effect beat ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 5C3 - GaAs as an electrooptic modulator at 10.6 microns

    Publication Year: 1966 , Page(s): 243 - 245
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (379 KB)  

    The electrooptic properties of a number of semiconductors were investigated. Of particular interest was the possibility of using these materials for modulation of infrared radiation, since many of the efficient modulation materials for the shorter wavelengths, such as KTN and KDP, are opaque in this region. We have investigated experimentally the modulation potential of a number of semiconducting ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 6A2 - The influence of self-focusing on the stimulated Brillouin, Raman, and Rayleigh effects

    Publication Year: 1966 , Page(s): 246 - 248
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (620 KB)  

    In liquids with optically anisotropic molecules the largest nonlinear polarization, cubic in the field amplitudes, corresponds to the intensity dependent index of refraction. The resulting self-focusing of the laser beam is in turn responsible for the anomalous gain of the stimulated Raman emission. The stimulated Brillouin effect in these self-focusing fluids has the same threshold condition as t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 6A7 - On self-trapping of a laser beam

    Publication Year: 1966 , Page(s): 249 - 250
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (339 KB)  

    When a sufficiently intense light beam propagates in an isotropic medium, the latter becomes birefringent with refractive index dependent on the even powers of the electric field strength. The permittivity also increases with the refractive index. Under such conditions, at very high intensities, a new effect arises: the light beam produces a kind of dielectric waveguide embracing that part of the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 7C7 - Infrared quantum counter action in rare earth doped fluoride lattices

    Publication Year: 1966 , Page(s): 251 - 253
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (463 KB)  

    This paper reviews the results of a program of experimental work on infrared quantum counter action in trivalent rare earth doped CaF2, SrF2, BaF2, and LaF3lattices. The action has been found in eight of the nine possible ions that could give an output in the visible region. While the strengths of the various schemes at a 1 percent doping level are consi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 8B7 - Energy transfer and CW laser action in Ho3+:Er2O3

    Publication Year: 1966 , Page(s): 253 - 255
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (483 KB)  

    Er2O3: Ho3+is an unusual laser material in that the host crystal itself provides the dominant pumping mechanism by means of energy transfer. The additional pumping bands due to Er3+and the consequent efficient transfer of energy to the Ho3+laser ion lead to relatively low threshold laser operation: 5 joules pulsed and 200W CW for a 12mm long c... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 8C1 - The laser current transformer for EHV power transmission lines

    Publication Year: 1966 , Page(s): 255 - 259
    Cited by:  Papers (10)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (829 KB)  

    A current measuring device applicable to an extra-high voltage power transmission line higher than 500 kV is proposed with preliminary experimental results. It obtains the instantaneous magnetic field ajacent to a transmission wire by measuring the angle of Faraday rotation of a laser beam in a flint glass rod. The laser beam is transmitted and analyzed at a ground potential site, and in the energ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 8C2 - Fluid flow measurements with a laser Doppler velocimeter

    Publication Year: 1966 , Page(s): 260 - 266
    Cited by:  Papers (8)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1312 KB)  

    The basic principles of the laser Doppler velocimeter, a new instrument for measurement of localized flow velocities in gases and liquids, are discussed in detail. Velocity measurements are made by detecting the Doppler shift in monochromatic laser light which is scattered from small contaminant particles in the fluid. A CW gas laser serves as the light sourc... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 8C9 - Observation of cooperative effects and determination of the electron and ion temperatures in a plasma from the scattering of a ruby laser beam

    Publication Year: 1966 , Page(s): 267 - 270
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (728 KB)  

    Observations have been made on the forward scattering of a Q -spoiled ruby laser beam from a hydrogen plasma which show clearly both the central ion peak and the satellites due to cooperative interaction between the ions and electrons. In a separate experiment on a large θ-pinch producing a high temperature deuterium plasma, the ion peak has been resolved a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 9A5 - Wide field active imaging

    Publication Year: 1966 , Page(s): 270 - 275
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1464 KB)  

    In this paper we report the results of some experiments in active imaging-image processing in which the pictorial information is placed within the laser cavity. By the use of an active medium which provides high gain over a wide aperture, in conjunction with a highly degenerate conjugate resonator, we have been able to obtain diffraction limited resolution with an information content orders of mag... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 9A9 - Pulsed laser holograms

    Publication Year: 1966 , Page(s): 275 - 279
    Cited by:  Patents (10)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1049 KB)  

    The limited coherence of most pulsed lasers is the principle difficulty in making pulsed holograms. This paper describes techniques used for the production of quality holograms of back lighted subjects, using ordinary pulsed lasers. The arrangements used achieve a temporal and spatial matching of the scene and reference beams to the degree required by the laser coherence cell. Techniques are descr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 9B6 - Measurements of gain perpendicular to the junction in gallium arsenide laser structures

    Publication Year: 1966 , Page(s): 279 - 282
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (638 KB)  

    Gain measurements are reported for radiation of wavelength 8466Å propagating in a direction perpendicular to the junction of a GaAs injection laser operated at 80°K. These results, used in conjunction with measurements of spontaneous emission, show that a gain of 2.3 percent is achieved at 7000 A/cm2. In thermal equilibrium, neglecting free carrier absorption, 0.78 percent of ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 9B8 - Semiconductor laser amplifier

    Publication Year: 1966 , Page(s): 283 - 289
    Cited by:  Papers (8)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1257 KB)  

    The infrared GaAs injection amplifiers described have gains as high as 2000 and give output powers of 150 milliwatts when operating at 77°K and driven by a single mode. Output efficiencies of 68 percent differentiial and 50 percent overall can be obtained if the amplifier is driven by light of spectral width equal to the band-pass of the amplifier (30 Å). Regenerative effects are minimiz... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 9C1 - Single transverse and longitudinal mode Q-switched ruby laser

    Publication Year: 1966 , Page(s): 290 - 293
    Cited by:  Papers (6)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (754 KB)  

    Single transverse and longitudinal modes have been observed in the output of a passive Q -switched ruby laser when two spherical mirrors are used for the resonator. This result has been consistently obtained with several rods, with two sets of mirrors of different radius of curvature, and with a few values of reflectivity of the mirrors which proves that it is t... View full abstract»

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

    Publication Year: 1966 , Page(s): 294 - 298
    Save to Project icon | Request Permissions | PDF file iconPDF (1039 KB)  
    Freely Available from IEEE

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