Optical bistability and multistability via the effect of spontaneously generated coherence in a three-level ladder-type atomic system

2004 ◽  
Vol 332 (3-4) ◽  
pp. 244-249 ◽  
Author(s):  
Dong-chao Cheng ◽  
Cheng-pu Liu ◽  
Shang-qing Gong
Keyword(s):  
Optical Bistability ◽  
Atomic System ◽  
Spontaneously Generated Coherence

Bistable behaviors of weak probe light via coherent and incoherent fields

2015 ◽  
Vol 93 (10) ◽  
pp. 1106-1111 ◽  
Author(s):  
H. Jafarzadeh ◽  
E. Ahmadi Sangachin ◽  
Seyyed Hossein Asadpour
Keyword(s):  
Optical Bistability ◽  
Light Propagation ◽  
Atomic System ◽  
Ring Cavity ◽  
Group Index ◽  
Probe Light ◽  
Spontaneously Generated Coherence ◽  
Intensity Threshold ◽  
Atomic Medium ◽  
Incoherent Pumping Field

In this paper, the bistable behaviors of weak probe light in a unidirectional ring cavity with a four-level atomic system are discussed. We find that in the presence of spontaneously generated coherence (SGC), the medium is completely phase dependent and the intensity threshold of optical bistability can be controlled. The effect of an incoherent pumping field on optical bistability in the presence and absence of SGC is also analyzed. Moreover, the group index behavior of weak probe light is investigated. We show that the intensity threshold of optical bistability can be controlled by light propagation switching from slow to fast by different parameters of the atomic medium.

Nonreciprocal optical bistability based on Doppler effect in a three-level atomic system

2021 ◽  
Vol 488 ◽  
pp. 126862
Author(s):  
Wenjia Shi ◽  
Hongjun Zhang ◽  
Hui Sun ◽  
Peng Wang
Keyword(s):  
Doppler Effect ◽  
Optical Bistability ◽  
Atomic System

Optical bistability and multistability in a three-level Δ-type atomic system under the nonresonant condition

2009 ◽  
Vol 18 (3) ◽  
pp. 1072-1076 ◽  
Author(s):  
Chen Ai-Xi ◽  
Wang Zhi-Ping ◽  
Chen De-Hai ◽  
Xu Yan-Qiu
Keyword(s):  
Optical Bistability ◽  
Atomic System

CONTROL OF ABSORPTION AND KERR NONLINEARITY BASED ON QUANTUM COHERENCE WITHOUT DRIVING FIELD

2010 ◽  
Vol 24 (30) ◽  
pp. 2921-2930 ◽  
Author(s):  
ZHONGHUA HUANG ◽  
AIXI CHEN ◽  
ZHAOCHU CHEN ◽  
LI DENG
Keyword(s):  
Quantum Coherence ◽  
Atomic System ◽  
Electromagnetically Induced Transparency ◽  
Kerr Nonlinearity ◽  
Linear Absorption ◽  
Driving Field ◽  
Spontaneously Generated Coherence ◽  
Traditional Scheme ◽  
Atomic Medium ◽  
Induced Transparency

In a three-level atomic system, the influences of spontaneously generated coherence on the linear absorption and the Kerr nonlinearity are investigated. Our studies show that properties of linear absorption can be dramatically affected by the effect of spontaneously generated coherence. With increase of intensities of spontaneously generated coherence, absorption inhibition will occur, and finally the atomic medium becomes transparent. Furthermore, we find that the Kerr nonlinearity can be obviously enhanced under the action of effects of spontaneously generated coherence. Comparing with traditional scheme of the electromagnetically induced transparency, absorption and Kerr nonlinearity can be controlled without need another driving field in our scheme.

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