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Controlling light pulse in triangular quantum well nanostructure via quantum interference

Faramarz Ebadpour, Ali Golestani, Ahad Darkhosh

Physica B Condensed MatterNov 7, 20146 citations

Faraday effect in coherent pulse propagation in quantum nanostructures

Jungang Huang, Gabriela M. Slavcheva, Ortwin G. Hess

Jan 1, 20080 citations

The effect of the "fast" light in the large-sized carbon nanostructures in the nanosecond time range

Vladislav Yu. Gribkov, Rimma Sh. Zatrudina

This paper presents a theoretical approach to describe the effect of fast light. The propagation of the light pulses in the large-sized carbon nanostructures was investigated. Dependence of the group velocity on the pulse energy and the ratio of the absorption cross-sections of the medium was investigated. It is shown that the group velocity decreases if the duration and energy of the incident pulse on the medium with the reverse saturable absorption increase.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIEApr 14, 20170 citations

Slow light propagation via quantum coherence in a semiconductor quantum well

Dingan Han, Yaguang Zeng, Yanfeng Bai

OptikSep 6, 20121 citation

Effect of an incoherent pumping field and tunnelling rate on optically controllable switching for light propagation in a InAs quadruple-coupled quantum dot molecule nanostructure

Mohammad Reza Ghorbani Fard, Olesya V. Vershinina, A. V. Katsaba

We propose using a nanostructure with quantum dots to switch light pulses between superluminal and subluminal propagation. Additionally, by adjusting tunneling rates and incoherent pumping field, the speed of light pulses can be controlled with a 5 ps switching time.

IEEE Photonics ConferenceNov 10, 20240 citations

The effect of "fast" light in the carbon nanostructures in the nanosecond range of pulsewidth

Rimma Sh. Zatrudina, Vladislav Yu. Gribkov

Significant deviation of light pulse group velocity from the speed of light с due to the anomalous dispersion of a medium (so-called “slow” and “fast” light phenomena) may be caused by several mechanisms. One of these mechanisms is reverse saturable absorption. This work presents experimental research of the propagation of high-power ultrashort laser pulses through the aqueous solution of the carbon nanostructures. Our experimental results demonstrate a “fast light” behavior of pulses transmitted through the aqueous solution of carbon nanostructures. Results of our numerical simulation are in good agreement with the experimental results and confirm that the observed phenomenon is due to reverse saturable absorption. The group velocity of nanosecond high-power laser pulses is negative and achieves value to –c/275.Significant deviation of light pulse group velocity from the speed of light с due to the anomalous dispersion of a medium (so-called “slow” and “fast” light phenomena) may be caused by several mechanisms. One of these mechanisms is reverse saturable absorption. This work presents experimental research of the propagation of high-power ultrashort laser pulses through the aqueous solution of the carbon nanostructures. Our experimental results demonstrate a “fast light” behavior of pulses transmitted through the aqueous solution of carbon nanostructures. Results of our numerical simulation are in good agreement with the experimental results and confirm that the observed phenomenon is due to reverse saturable absorption. The group velocity of nanosecond high-power laser pulses is negative and achieves value to –c/275.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIEApr 14, 20172 citations

Size effects in quantum well nanostructures on propagation of light pulse

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