scholarly journals Cavity electromagnetically induced transparency and all-optical switching using ion Coulomb crystals

2011 ◽  
Vol 5 (10) ◽  
pp. 633-636 ◽  
Author(s):  
Magnus Albert ◽  
Aurélien Dantan ◽  
Michael Drewsen
Keyword(s):  
Optical Switching ◽  
Electromagnetically Induced Transparency ◽  
All Optical ◽  
Coulomb Crystals ◽  
Induced Transparency ◽  
All Optical Switching

scholarly journals Tunable Fano resonances in a robust quasicylindrical microresonator photonic system

2018 ◽  
Vol 189 ◽  
pp. 11009
Author(s):  
Xueying Jin ◽  
Mengyu Wang ◽  
Yongchao Dong ◽  
Liming Chen ◽  
Fei Li ◽  
...  
Keyword(s):  
Optical Switching ◽  
Electromagnetically Induced Transparency ◽  
High Sensitivity ◽  
Selective Excitation ◽  
Fano Resonances ◽  
All Optical ◽  
Induced Transparency ◽  
First Time ◽  
And Storage ◽  
All Optical Switching

The control of Fano resonances is of critical importance to opto-electronic and all-optical switching devices, light delay and storage, high sensitivity sensors, and quantum information processors. In this paper, we experimentally and theoretically demonstrate that controllable electromagnetically induced transparency (EIT)-like and Fano resonances can be achieved in a single quasi-cylindrical microresonator (QCMR). Robust and selective excitation of localized axial modes in a high quality QCMR is firstly demonstrated. Based on this stable platform, EIT-like lineshapes can be tuned and converted into Fano resonances by vertically moving the resonator. Moreover, by horizontally scanning the resonator, the transmission spectrum exhibits periodically changed Fano-like lineshapes. It is reported for the first time that the above two kinds of Fano resonances originated from different mechanisms can work on the same mode simultaneously. Our approach, demonstrated in this work, provides a robust photonic platform for accessing, controlling, and engineering the Fano resonances.

scholarly journals All-Optical Switching In A Medium of A Four-Level Vee-Cascade Atomic Medium

2021 ◽  
Author(s):  
Khoa Dinh Xuan ◽  
Ai Nguyen Van ◽  
Dong Hoang Minh ◽  
Doai Le Van ◽  
Bang Nguyen Huy
Keyword(s):  
Optical Switching ◽  
Electromagnetically Induced Transparency ◽  
Probe Field ◽  
Storage Devices ◽  
Signal Light ◽  
All Optical ◽  
Electromagnetically Induced Absorption ◽  
Induced Transparency ◽  
All Optical Switching ◽  
Signal Field

Abstract We proposed a model for all-optical switching in a medium consisting of four-level vee-cascade atomic systems excited by coupling, probe, and signal fields. It is shown that, by changing the intensity or the frequency of the signal field, the medium can be actively switched between either electromagnetically induced transparency (EIT) or electromagnetically induced absorption (EIA), which has behavior of all-optical switching. As a result, a cw probe field is switched into square pulses by modulating the intensity or the frequency of the signal light. Furthermore, width of the square probe pulses can be controlled by tuning the switching period of the signal field. Such a tuneable all-optical switching is useful for finding related applications in optic communications and optical storage devices.

EXCITONIC SELF-INDUCED TRANSPARENCY IN SEMICONDUCTORS

1996 ◽  
Vol 05 (01) ◽  
pp. 51-57
Author(s):  
I.B. TALANINA
Keyword(s):  
Optical Switching ◽  
Pulse Propagation ◽  
Atomic Systems ◽  
Significant Difference ◽  
All Optical ◽  
Two Level Systems ◽  
Coherent Pulse ◽  
Shaped Pulse ◽  
Induced Transparency ◽  
All Optical Switching

The form invariant coherent pulse propagation in semiconductors excited at 1s-exciton resonance is studied analytically using the reduced semiconductor Maxwell-Bloch equations. The sech-shaped pulse solution for excitonic self-induced transparency (SIT) is presented, showing significant difference in comparison with the well known SIT solution for non-interacting two-level systems. In contrast to 2π pulses in atomic systems, the phenomenon of SIT of interacting excitons in semiconductors occurs for the pulses of area 1.07π. Possible applications of the SIT solitons in semiconductor all-optical switching devices are discussed.

scholarly journals Ultrafast all-optical switching of dual-band plasmon-induced transparency in terahertz metamaterials

2022 ◽  
Vol 20 (1) ◽  
pp. 013701
Author(s):  
Hao Sun ◽  
Jianghua Zhang ◽  
Yuhua Tang ◽  
Hengzhu Liu ◽  
Jie Yang ◽  
...  
Keyword(s):  
Optical Switching ◽  
Dual Band ◽  
All Optical ◽  
Induced Transparency ◽  
All Optical Switching ◽  
Terahertz Metamaterials ◽  
Plasmon Induced Transparency
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