Journal ArticleDOI
A room temperature ZnO acoustoelectric microwave oscillator
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TLDR
In this paper, the authors presented results for ZnO acoustoelectric oscillators at room temperature of resistivities from 100 Ω cm to 104 ǫ cm, where the oscillations were divided into three different types depending on the thickness and conductivity of the sample in question.Abstract:
Results are presented for ZnO acoustoelectric oscillators at room temperature of resistivities from 100 Ω cm to 104 Ω cm. Pulsed operation as well as continuous wave operation was possible and frequencies up to 5 GHz and 4 GHz respectively were observed. The oscillations are divided into three different types depending on the thickness and the conductivity of the sample in question. The experimental results are compared with the existing theories for the acoustoelectric oscillator and with results previously obtained with CdS oscillators.read more
Citations
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Journal ArticleDOI
The linear theory of acoustoelectric oscillators with arbitrary static field distributions
P N Butcher,H M Janus +1 more
TL;DR: In this article, the growth rate and frequency shift from acoustic resonance for an arbitrary mode of an acoustoelectric oscillator are derived for the zero diffusion limit for DC field distributions with three different dependences on distance from the cathode: uniform, square root and hyperbolic tangent.
Journal ArticleDOI
A nonlinear theory of acoustoelectric phenomena. Saturation study-application to thin AE oscillator
TL;DR: In this article, a nonlinear theory of acoustoelectric phenomena is presented by means of the many time method and the Fourier transformation, and the saturation of amplitudes of different frequencies are obtained.
Journal ArticleDOI
Parametric effects on current saturation in CdS acoustoelectric oscillator
E. Groubert,J. M. Peransin +1 more
TL;DR: In this paper, experimental results are given which prove the existence of an acoustoelectric current frequency change in photoconducting CdS apart from the presence of high field domains crossing the sample.
Journal ArticleDOI
Light scattering experiments and nonlinear behaviour of the acoustoelectric oscillator
TL;DR: Light scattering experiments have been performed with an acoustoelectric oscillator of CdS at light wavelengths where no photoconductivity is excited, and the intensity of scattered light was determined at the frequency of maximum gain at various carrier concentrations and applied fields.
References
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Journal ArticleDOI
Amplification of Ultrasonic Waves in Piezoelectric Semiconductors
TL;DR: In this paper, the authors show that for properly prepared material, significant amplification is expected up to the microwave frequencies, and at high frequencies, gain is reduced because electron diffusion smooths out the electron bunching necessary for amplification.
Journal ArticleDOI
High-frequency acoustoelectric currents and departures from Ohm's law in thin platelets of CdS I. Linear behaviour
J D Maines,E G S Paige +1 more
TL;DR: In this article, high-frequency currents associated with thin photoconducting cadmium sulphide platelets having flat and parallel faces are reported under conditions when round-trip gain due to acousto-electric amplification is achieved.
Journal ArticleDOI
Acoustoelectric u.h.f. oscillator: frequency modulation
TL;DR: In this paper, the authors describe some characteristics of an oscillator based upon the acoustoelectric interaction in piezoelectrics, and make particular reference to frequency modulation and related-device applications.
Journal ArticleDOI
Voltage- and conductivity-independent mode of operation in thin acoustoelectric oscillators
TL;DR: In this paper, a new mounting technique was developed that allowed CdS acoustoelectric oscillators to be operated with plate thicknesses between 25 and 40 μm, and the thin devices oscillated exclusively at mode numbers 3, 6, 9 etc. in a phase-locked series.
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High-frequency acoustoelectric currents and departures from Ohm's law in thin platelets of CdS I. Linear behaviour
J D Maines,E G S Paige +1 more