IEEE Journal of Quantum Electronics

Volume 8 Issue 2  Part 2 • February 1972

 This issue contains several parts.Go to:  Part 1 

Filter Results

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

    Publication Year: 1972, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (488 KB)
    Freely Available from IEEE
  • Preface

    Publication Year: 1972, Page(s): 97
    Request permission for commercial reuse | PDF file iconPDF (332 KB)
    Freely Available from IEEE
  • Transient gain measurements on laser dyes

    Publication Year: 1972, Page(s):98 - 101
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1297 KB)

    Measurements were made of the time-dependent gain in flashlamp-pumped rhodamine 6G/ethanol solutions saturated with air and with nitrogen. Fitting of transient gain data to theory showed that dissolved oxygen increased the rate of triplet generation as well as accelerating the return of triplets to the ground state. Large transient absorption was observed in fluorescein solution at all oxygen conc... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Oscillator-amplifier dye-laser system using N2laser pumping

    Publication Year: 1972, Page(s):101 - 105
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1709 KB)

    An N2laser pumped dye-laser system is described which uses an oscillator-amplifier arrangement and fast-flow dye cells in order to achieve spectral narrowing and spatial coherence without sacrificing power. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High-intensity laser-induced vaporization and explosion of solid material

    Publication Year: 1972, Page(s):106 - 111
    Cited by:  Papers (148)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1591 KB)

    Material removal from the front surface of a solid by a high-intensity laser beam is analytically treated. The model used allows for transmission of laser energy past the front surface and for transient phenomena. It is found that for certain laser and material parameters subsurface temperatures will exceed the surface temperature. Under such conditions, explosive removal of material could occur r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Thermal analysis of laser drilling processes

    Publication Year: 1972, Page(s):112 - 119
    Cited by:  Papers (58)  |  Patents (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2359 KB)

    A model has been developed that uses a continuous, distributed, and moving heat source to describe the temperature profile and thermal stress propagation for laser drilled holes in high-purity fired-alumina ceramic substrate material. The temperature profile and the tangential stress distribution of the laser-formed hole are calculated to indicate the magnitude of those factors that can influence ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dynamics of laser processing in transparent media

    Publication Year: 1972, Page(s):120 - 125
    Cited by:  Papers (18)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2116 KB)

    High-quality laser processing for industrial production requires, in addition to a suitable beam source, an appropriate adaption of the laser emission to the processing material. Therefore the interaction of the high-intensity laser beam with solid transparent matter was investigated. The kinetics of heating and evaporation by laser pulses was studied. The experiments showed that transparent mater... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Laser generation of conductor patterns

    Publication Year: 1972, Page(s):126 - 131
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1940 KB)

    A laser pattern generation system has been developed to define gold conductor patterns on ceramic substrates. Such patterns are used as interconnection circuitry for silicon integrated circuits. The system consists of a mechanical positioning device for the substrates, a numerical control system, and an Nd:YAG laser to evaporate the gold selectively to form the desired pattern. Rotational motion i... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Deep penetration welding with high-power CO2lasers

    Publication Year: 1972, Page(s):132 - 135
    Cited by:  Papers (38)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1421 KB)

    Experiments performed over the past year have involved the use of near-diffraction-limited lasers at power levels up to 20 kW for welding applications. This is a substantially higher power level than used in all previously reported experiments. As a result of the higher powers, significantly deeper penetration has been achieved. The optical cavity for the lasers used in these tests was an unstable... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Single-mode operation of a high-power pulsed N2/CO2laser

    Publication Year: 1972, Page(s):136 - 139
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1465 KB)

    A pulsed electric N2/CO2laser is used to investigate the power extraction capabilities of stable and unstable cavity resonators. Under conditions of the same resonator output coupling and coverage of the laser mediums no appreciable difference in power extraction is measured between the stable and unstable resonators. When focused, the unstable resonator produced focal point ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The cross-beam electric-discharge convection laser

    Publication Year: 1972, Page(s):139 - 144
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2156 KB)

    An experimental investigation of a 60-cm-wide × 2.5-cm-high N2-CO2cross-beam electric-discharge convection laser (EDCL) is described. In the cross-beam EDCL, the discharge is maintained along the flow in a rectangular cross-section channel and optical power is extracted transverse to the discharge and flow. High mass flow rates are employed to achieve high volumetric pow... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Atmospheric pressure CO2lasers giving high output energy per unit volume

    Publication Year: 1972, Page(s):145 - 149
    Cited by:  Papers (61)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1614 KB)

    Two electrode designs are described that are capable of producing high output energy densities from pulsed atmospheric pressure CO2-N2-He lasers. In both cases a uniform volumetric excitation is obtained by the use of an auxiliary discharge. The first system uses a mesh cathode and has produced 4.8 J from an excited volume of 800 cm3(6 J.1-1). The second... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Characteristics of a CO laser

    Publication Year: 1972, Page(s):150 - 160
    Cited by:  Papers (75)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3144 KB)

    Some characteristics of CO laser operation are reported. A discussion of the roles of the various ingredients necessary for optimization of the gas compositions is given and measurements of efficiency, spectral output, small signal gains, and saturation intensity at various temperatures are reported. Important mechanisms that dominate the kinetics of the molecules and electrons in electrical disch... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Experiments with a pulsed CO2gas dynamic laser

    Publication Year: 1972, Page(s):161 - 163
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1040 KB)

    We report operation of a pulsed combustion-heated gas dynamic CO2laser. The pulsed version is compared with the continuous gas dynamic laser. Variation of the pulse energy with the stagnation pressure of the gas, the shape of the expansion nozzle, and output mirror transmittance is discussed. Observed laser pulse energy of 110 J is compared with theoretical estimates of maximum obtainab... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Extension of TEA CO2laser capabilities

    Publication Year: 1972, Page(s):163 - 165
    Cited by:  Papers (41)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1115 KB)

    Results obtained to date with TEA CO2lasers in both single-pulse and high-repetition-rate operation are described. The special cathode arrangement for triggered discharge permits output energy of more than 18 J/1 of excited volume, with overall efficiency of 17 percent without arcing. Preliminary results obtained with a gas recirculating loop are 100 pulses/s at a 20-J/pulse level. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High-repetition-rate xenon laser with transverse excitation

    Publication Year: 1972, Page(s):166 - 169
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1379 KB)

    Pulsed laser action has been obtained in neutral xenon in the infrared at a repetition rate of 1.4 kHz by using a transversely excited helium-xenon discharge. This high PRF was made possible by the use of a transverse gas flow to remove the residual ions from the discharge region. We have been able to obtain 5.2 W of average power from an 80-cm-long closed-cycle device in which the flow velocity i... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Digital light deflector with prisms and polarization switch based on the Pockels effect with transverse field

    Publication Year: 1972, Page(s):169 - 173
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1736 KB)

    An in-line eight-stage digital light deflector is described. The polarization switch is similar to a birefringence-compensated transverse modular, which has a practical angular aperture of 10°. The birefringent elements are single prisms. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Intracavity CdTe modulators for CO2lasers

    Publication Year: 1972, Page(s):173 - 179
    Cited by:  Papers (38)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2733 KB)

    The use of cadmium telluride as an electrooptic material for intracavity modulation of CO2lasers is described. Included are the predicted and measured effects of CdTe intracavity modulators on laser performance. Coupling and frequency modulation are discussed and experimental results compared with theoretically predicted performance for both techniques. Limitations on the frequency resp... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Gigahertz cutoff frequency capabilities of CdHgTe photovoltaic detectors at 10.6 µ

    Publication Year: 1972, Page(s):180 - 184
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1559 KB)

    Using departure from stoichiometry, p-n junctions were prepared in CdxHg1-xTe withx simeq 0.20for the study of photovoltaic detection at 10.6 μ. In the final photodiodes, with sensitive areas between4 times 10^{-4}and 10-3cm2, values such as10^{5} Omegaand 8 pF have been observed at -0.1 V reverse bias for the shunt ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effects of mode conversion in acoustooptical modulation

    Publication Year: 1972, Page(s):184 - 191
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2490 KB)

    The conversion of a Gaussian laser beam into higher order optical beam modes through acoustooptical modulation is treated. In particular the effects of this conversion in an optical communications system are described with emphasis placed on the actual signal received by a distant antenna rather than on the total power scattered. For the special case of pulse amplitude modulation, which is conside... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High-power Nd3+POCl3liquid laser system

    Publication Year: 1972, Page(s):192 - 196
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1467 KB)

    The properties of Nd3+: POCl3-ZrCl4and SnCl4liquid lasers were investigated. Stimulated-emission cross section, loss coefficient, and terminal-level lifetime were determined. Thermal effect and amplification characteristics were studied. According to the experimental data, the POCl3liquid laser seems to be useful for a high-power laser system ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Lasing and spectral line characteristics in phosphate glasses and inorganic liquids with neodymium

    Publication Year: 1972, Page(s):196 - 198
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (963 KB)

    Possible reasons for narrow-band oscillation of phosphate glass and inorganic liquid lasers with neodymium are described. It is shown that experimental data considered earlier to be evidence of fast energy-transfer rate can alternatively be explained if the degree of spectral line inhomogeneity is about unity. Neodymium stimulated-emission cross sections in phosphate glasses are compared at room a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A survey of integrated optics

    Publication Year: 1972, Page(s):199 - 205
    Cited by:  Papers (43)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2222 KB)

    In order for optical transmission systems to compete successfully with other techniques, the circuits must be comparably small, comparably rugged, and comparably priced. The avenue to achieving these characteristics is via miniature guided-wave structures in contrast to beam-mode propagation via lenses and mirrors. Passive miniature transmission lines with satisfactory losses have been formed in g... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Propagating modes of a metal-clad-dielectric-slab waveguide for integrated optics

    Publication Year: 1972, Page(s):206 - 212
    Cited by:  Papers (80)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1888 KB)

    Propagating modes of a dielectric-slab waveguide consisting of a dielectric core and metal clads are analyzed numerically by using a simplified model. The behavior of modes is graphically shown and their peculiarities due to dielectric properties of metal are described. It is shown that the TE0mode has the smallest attenuation constant when the wavelength is sufficiently short and that ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Wave propagation in thin-film optical waveguides using gyrotropic and anisotropic materials as substrates

    Publication Year: 1972, Page(s):212 - 216
    Cited by:  Papers (21)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1604 KB)

    Wave propagation in optical waveguides on substrates of magnetic, optically active, or birefringent material is analyzed. The conditions for TELeftrightarrowTM mode conversion are derived and computer calculations showing the characteristic of a quartz-substrate mode converter is obtained. A mathematical analysis of a gyrator using two mode converters in series is given and the schemes ... 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
Prof. Hon Ki Tsang
Chinese University of Hong Kong