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Proceedings Paper

Accelerating space-charge gratings in wide-bandgap semiconductors as a tool for simultaneous velocity and acceleration measurement
Author(s): Mikhail Bryushinin; Igor Sokolov
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Paper Abstract

We study the excitation of the two-wave mixing and non-steady-state photoelectromotive force signals using uniformly accelerated motion of the recording light pattern. Such illumination is created by the linear frequency modulation of the interfering light beams. The pulse response is predicted theoretically and observed experimentally in Bi12TiO20 and GaAs crystals at λ=633 nm. We analyse both the diffusion and space-charge wave regimes of signal excitation. The evolution of the pulse shape versus the chirp rate is demonstrated and explained in the frames of the developed theory. The application of the effects in laser Doppler velocimeters and accelerometers is discussed as well.

Paper Details

Date Published: 14 December 2016
PDF: 6 pages
Proc. SPIE 10176, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics, 101760U (14 December 2016); doi: 10.1117/12.2268290
Show Author Affiliations
Mikhail Bryushinin, Ioffe Institute (Russian Federation)
Igor Sokolov, Ioffe Institute (Russian Federation)

Published in SPIE Proceedings Vol. 10176:
Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics
Yuri N. Kulchin; Roman V. Romashko; Alexander V. Syuy, Editor(s)

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