Coherent control of the refractive index using optical bistability

We discuss the origin and characteristics of the very large intensity-dependent changes in the refractive index of the semiconductor cadmium mercury telluride at 10.6 m. With continuous wave (c.w.) radiation and sample temperatures of 77 K nonlinear Fabry-Perot effects can be observed at powers as low as 1 mW. The Auger dominated recombination process and the thermal contributions to the refractive index make observations of optical bistability difficult with c.w. radiation. However, the use of a pulsed CO 2 laser and two-photon absorption of the radiation does lead to the observation of bistability at room temperature. We compare these results with the reported work on InSb.

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Coherent control of intersubband optical bistability in quantum wells

Applied Physics Letters ◽

10.1063/1.1751611 ◽

2004 ◽

Vol 84 (20) ◽

pp. 3984-3986 ◽

Cited By ~ 52

Author(s):

H. O. Wijewardane ◽

C. A. Ullrich

Keyword(s):

Quantum Wells ◽

Optical Bistability ◽

Coherent Control

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Coherent control of optical bistability in an open Λ-type three-level atomic system

Journal of the Optical Society of America B ◽

10.1364/josab.29.002891 ◽

2012 ◽

Vol 29 (10) ◽

pp. 2891 ◽

Cited By ~ 80

Author(s):

Zhen Wang ◽

Ai-Xi Chen ◽

Yanfeng Bai ◽

Wen-Xing Yang ◽

Ray-Kuang Lee

Keyword(s):

Optical Bistability ◽

Coherent Control ◽

Atomic System

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TWO-COLOR COHERENT CONTROL OF OPTICAL BISTABILITY IN ASYMMETRIC SEMICONDUCTOR QUANTUM WELLS

Modern Physics Letters B ◽

10.1142/s0217984908014948 ◽

2008 ◽

Vol 22 (06) ◽

pp. 393-404 ◽

Cited By ~ 19

Author(s):

JIA-HUA LI ◽

XIANG-YING HAO

Keyword(s):

Quantum Wells ◽

Optical Switching ◽

Optical Bistability ◽

Coherent Control ◽

Second Harmonic ◽

Intersubband Transitions ◽

Fundamental Field ◽

Harmonic Field ◽

Semiconductor Quantum Wells ◽

Semiconductor Quantum Well

We investigate optical bistability in intersubband transitions of an asymmetric semiconductor quantum well structure that has equidistant transitions between three subbands of the system and is placed in a unidirectional cavity. The system is simultaneously coupled by a fundamental field and its second harmonic. The second harmonic field acts as a control field and significantly influences the optical bistability. In addition, the two-color coherent control of optical bistability by the relative phase of the fundamental and the second harmonic fields is shown. The influence of the electronic cooperation parameter on the OB behavior is also discussed. This investigation may be used for optimizing and controlling the optical switching process in the SQW solid-state system, which is much more practical than that in the atomic system because of its flexible design and the controllable interference strength.

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Optical Bistability Effect of Two-port Nonlinear Fiber Mach-Zehnder Interferometer

Communications in Physics ◽

10.15625/0868-3166/21/2/112 ◽

2011 ◽

Vol 21 (2) ◽

pp. 161

Author(s):

Ho Quang Quy ◽

Vu Ngoc Sau ◽

Nguyen Van Hoa ◽

Nguyen Thi Thanh Tam

Keyword(s):

Refractive Index ◽

Phase Shift ◽

Input Signal ◽

Initial Phase ◽

Optical Bistability ◽

Nonlinear Coefficient ◽

Zehnder Interferometer ◽

The Future ◽

Nonlinear Fiber ◽

Mach Zehnder Interferometer

In this article, the dependence of bistability characteristic of the two-port nonlinear fiber Mach-Zehnder interferometer (TPNFMZI) on initial phase shift, wavelength of input signal, nonlinear coefficient of refractive index and length of nonlinear fiber is investigated and discussed. The results of this work play an important role in designing the TPNFMZI and its application in the future.

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