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1 Mar 1970

Volume 16, Issue 5, pp. 191-224


DIFFUSION OF ELECTRONS IN SILICON TRANSVERSE TO A HIGH ELECTRIC FIELD

D. J. Bartelink and G. Persky

Appl. Phys. Lett. 16, 191 (1970); http://dx.doi.org/10.1063/1.1653157 (4 pages) | Cited 5 times

Online Publication Date: 21 October 2003

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A new method for directly measuring diffusion coefficients transverse to a high electric field has been applied to electrons in silicon at 300°K. For fields ranging up to 24 kV∕cm, the transverse diffusion coefficient, as measured and determined by Monte Carlo calculation, indicates a drop from the zero field value D0 to approximately D0∕2. The present results are subject to some uncertainty, but improved resolution appears to be attainable with maximum use of present technology.

NONMAGNETOSTATIC VOLUME AND SURFACE WAVE MODES ON GYROMAGNETIC YIG ROD WAVEGUIDES

T. F. Tao and J. W. Tully

Appl. Phys. Lett. 16, 194 (1970); http://dx.doi.org/10.1063/1.1653158 (3 pages) | Cited 2 times

Online Publication Date: 21 October 2003

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Electromagnetic surface waves on a gyromagnetic single crystalline YIG rod waveguide were measured by a disturbing body technique in a surface wave resonator. Both the volume and surface‐mode surface waves were measured under conditions when magnetostatic analysis is not valid. Experimental results are presented to show that important nonmagnetostatic characteristics of surface wave propagation revealed in the dispersion plot have all been verified.

OBSERVATIONS OF CURRENT FILAMENTS IN CHROMIUM‐DOPED GaAs

A. P. Ferro and S. K. Ghandhi

Appl. Phys. Lett. 16, 196 (1970); http://dx.doi.org/10.1063/1.1653159 (3 pages) | Cited 1 time

Online Publication Date: 21 October 2003

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Multiple current filaments are observed during the low‐impedance post‐breakdown state of double injection diodes fabricated from chromium‐doped, semi‐insulating gallium arsenide.

EXPERIMENTAL STUDIES OF EVANESCENT WAVE COUPLING INTO A THIN‐FILM WAVEGUIDE

J. E. Midwinter and F. Zernike

Appl. Phys. Lett. 16, 198 (1970); http://dx.doi.org/10.1063/1.1653160 (3 pages) | Cited 14 times

Online Publication Date: 21 October 2003

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Experimental evidence is presented for a 2π phase change and a corresponding spot shift at resonance in an evanescent wave optical waveguide coupler.

OPTICAL ACTIVITY AND FARADAY ROTATION IN BISMUTH OXIDE COMPOUNDS

Albert Feldman, William S. Brower, and Deane Horowitz

Appl. Phys. Lett. 16, 201 (1970); http://dx.doi.org/10.1063/1.1653161 (2 pages) | Cited 55 times

Online Publication Date: 21 October 2003

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The optical rotatory power and Faraday rotation were measured in crystals of 17Bi2O3: Ga2O3, 7Bi2O3: ZnO, Bi12TiO20, Bi12GeO20, and Bi12SiO20 in the wavelength range 400 to 700 nm at room temperature. Our crystals were enantiomorphs of those reported previously. The large Verdet coefficients indicate that these crystals are potentially useful as magneto‐optic modulator materials.

THE ``EPICON'' ARRAY: A NEW SEMICONDUCTOR ARRAY‐TYPE CAMERA TUBE STRUCTURE

W. E. Engeler, M. Blumenfeld, and E. A. Taft

Appl. Phys. Lett. 16, 202 (1970); http://dx.doi.org/10.1063/1.1653162 (4 pages) | Cited 3 times

Online Publication Date: 21 October 2003

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A new target structure for a television camera tube consisting of an array of capacitors and p‐n junctions, formed by a deposited epitaxial layer, is described. The epitaxial growth forms a series of pyramidal shaped structures on top of the patterned oxidized wafer. These silicon structures form an array of capacitors with the substrate and cover much of the oxide layer. They are separated by micron‐size gaps and project several microns above the oxide surface. Contact to the substrate is made through an array of apertures where p‐n junctions are formed. By intercepting the electron beam, these structures obviate the need for a resistive sea and are expected to minimize material compatibility and thermal processing problems.

ESR AND OPTICAL ABSORPTION STUDIES OF ION‐IMPLANTED SILICON

B. L. Crowder, R. S. Title, M. H. Brodsky, and G. D. Pettit

Appl. Phys. Lett. 16, 205 (1970); http://dx.doi.org/10.1063/1.1653163 (4 pages) | Cited 99 times

Online Publication Date: 21 October 2003

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The g value, line shape, and linewidth of an ESR signal in Si layers which have been damaged by ion implantation of Si, P, or As at room temperature are found to be identical to those of the electron states observed in amorphous Si films prepared by rf sputtering. Interference phenomena observed in the optical absorption spectra allow a determination of the depth to which the Si has been damaged by the energetic heavy ions. These two techniques together provide a new tool for investigating lattice disorder in ion‐implanted Si layers.

TRANSIENT STIMULATED ROTATIONAL AND VIBRATIONAL RAMAN SCATTERING IN GASES

M. E. Mack, R. L. Carman, J. Reintjes, and N. Bloembergen

Appl. Phys. Lett. 16, 209 (1970); http://dx.doi.org/10.1063/1.1653164 (3 pages) | Cited 32 times

Online Publication Date: 21 October 2003

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Using a mode‐locked ruby laser, stimulated rotational and vibrational Raman scattering has been observed in a variety of high‐pressure gases, where previously no stimulated scattering has been reported. Pulse energy conversion efficiencies as high as 70% have been obtained. Evidence for a strong optical Stark effect is seen in the gases producing rotational scattering. Self‐focusing in a collimated beam is observed in N2O and CO2.

INSTABILITIES IN SEMICONDUCTING GLASS DIODES

D. Shanefield and P. E. Lighty

Appl. Phys. Lett. 16, 212 (1970); http://dx.doi.org/10.1063/1.1653165 (3 pages) | Cited 3 times

Online Publication Date: 21 October 2003

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A predominantly amorphous mixture of Te, As, and Ge exhibits electrical memory effects, but continued cycling of the memory leads to unstable behavior. An explanation is based on the presence of varying amounts of crystalline material, and a quantitative relationship is presented.

THERMAL LASER EXCITATION BY MIXING IN A HIGHLY CONVECTIVE FLOW

Barry R. Bronfin, Laurence R. Boedeker, and John P. Cheyer

Appl. Phys. Lett. 16, 214 (1970); http://dx.doi.org/10.1063/1.1653166 (4 pages) | Cited 18 times

Online Publication Date: 21 October 2003

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Population inversion has been generated through the mixing of CO2 or N2O into a supersonic N2 flow, vibrationally excited by thermal means. Gain at 10.6μ, corresponding to the 001 → 100 transition in CO2, equal to 0.8%∕cm has been measured in this medium. Using an optical cavity, oriented transverse to the flow, up to 60‐W cw laser power at 10.6μ from CO2 was extracted from a 5‐cm length by 1.2‐cm2 cross‐section active volume. When N2O was substituted for CO2 in the mixing region, cw laser emission was demonstrated at 10.8μ, corresponding to the 001 → 100 transition in N2O.

SINGLE‐FREQUENCY OSCILLATION USING TWO COUPLED CAVITIES INCORPORATING A FABRY‐PEROT ELECTRO‐OPTIC MODULATOR

T. Kobayashi and Y. Matsuo

Appl. Phys. Lett. 16, 217 (1970); http://dx.doi.org/10.1063/1.1653167 (2 pages) | Cited 4 times

Online Publication Date: 21 October 2003

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A single‐frequency laser oscillation was obtained by using two coupled cavities incorporating a Fabry‐Perot electro‐optic modulator. Although the modulation frequency was as low as 1.0 MHz, the variation of the output power was negligibly small. The output power obtained in the single‐frequency oscillation was about 80% of the total power in multifrequency oscillation. This method requires fewer mirrors than that of Smith; therefore, it is expected that the output frequency and power may be easily stabilized.

MEASURED ELECTRICAL CHARACTERISTICS OF INTERDIGITAL SURFACE WAVE TRANSDUCERS ON LITHIUM NIOBATE

J. de Klerk and M. R. Daniel

Appl. Phys. Lett. 16, 219 (1970); http://dx.doi.org/10.1063/1.1653168 (3 pages) | Cited 3 times

Online Publication Date: 21 October 2003

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The radiation resistance and reactance as a function of frequency has been measured for interdigital comb structures used for generating z propagating surface waves on a yz surface of LiNbO3. The quantities reveal a basic asymmetry about the center frequency of surface wave generation due to the simultaneous launching of bulk waves.

MAGNETOELASTIC LOVE WAVES IN A MAGNETIC LAYERED NONMAGNETIC SUBSTRATE

H. van de Vaart and H. Matthews

Appl. Phys. Lett. 16, 222 (1970); http://dx.doi.org/10.1063/1.1653169 (3 pages) | Cited 8 times

Online Publication Date: 21 October 2003

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The dispersion relation for magnetoelastic Love waves propagating in a magnetic thin film supported by a nonmagnetic substrate is derived. It is shown that the interaction between elastic Love waves and magnetostatic surface waves is nonreciprocal and depends on the mode number of the Love wave.
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ERRATUM: OPTICAL SECOND‐HARMONIC GENERATION IN CRYSTALS OF ORGANIC DYES

Appl. Phys. Lett. 16, 224 (1970); http://dx.doi.org/10.1063/1.1653170 (1 page)

Online Publication Date: 21 October 2003

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