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Proceedings Paper

Slowdown of light signals and registration of phase modulation in semiconductor crystals of CdTe at room temperature in infrared
Author(s): N. Kukhtarev; T. Kukhtareva; D. Edwards; P. Land; Todd Murray
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Paper Abstract

We have developed model that describe transformation of time modulated optical signals by the double optical and electrical interferometer: beam coupling and holographic current in the semiconductor crystals. We consider non-local response, when dominant mechanism of the space charge formation is diffusion or drift in a high external electric field. Both phase and amplitude modulation is considered (linear ramp phase modulation, sinusoidal modulation, step-like modulation). For the sinusoidal amplitude modulation slow-down of optical signal is described. Experimental results on CdTe crystal with IR CW laser (P=100mW, wavelength 1064 nm) are in agreement with theoretical predictions. Effective group velocity was slow-downed to 555 cm/s for the modulated signal with period of 8ms.

Paper Details

Date Published: 30 August 2006
PDF: 10 pages
Proc. SPIE 6311, Optical Information Systems IV, 63111L (30 August 2006); doi: 10.1117/12.686736
Show Author Affiliations
N. Kukhtarev, Alabama A&M Univ. (United States)
T. Kukhtareva, Alabama A&M Univ. (United States)
D. Edwards, Alabama A&M Univ. (United States)
P. Land, Alabama A&M Univ. (United States)
Todd Murray, Boston Univ. (United States)


Published in SPIE Proceedings Vol. 6311:
Optical Information Systems IV
Bahram Javidi; Demetri Psaltis; H. John Caulfield, Editor(s)

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