Electromagnetically induced transparency based on guided-mode resonances

2015 ◽  
Vol 40 (18) ◽  
pp. 4241 ◽  
Author(s):  
Sun-Goo Lee ◽  
Soo-Yong Jung ◽  
Hee-Seung Kim ◽  
Seihyoung Lee ◽  
Jong-Moon Park
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Guided Mode ◽  
Induced Transparency

scholarly journals Double Electromagnetically Induced Transparency and Its Slow Light Application Based on a Guided-Mode Resonance Grating Cascade Structure

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3710
Author(s):  
Guofeng Li ◽  
Junbo Yang ◽  
Zhaojian Zhang ◽  
Yuyu Tao ◽  
Lingjun Zhou ◽  
...  
Keyword(s):  
Slow Light ◽  
Electromagnetically Induced Transparency ◽  
Wide Band ◽  
Theoretical Explanation ◽  
Low Loss ◽  
Guided Mode ◽  
Delay Times ◽  
Cascade Structure ◽  
Guided Mode Resonance ◽  
Induced Transparency

In recent years, the achievement of the electromagnetically induced transparency (EIT) effect based on the guided-mode resonance (GMR) effect has attracted extensive attention. However, few works have achieved a double EIT-like effect using this method. In this paper, we numerically achieve a double EIT-like effect in a GMR system with a three-layer silicon nitride waveguide grating structure (WGS), using the multi-level atomic system model for theoretical explanation. In terms of slow light performance, the corresponding two delay times reach 22.59 ps and 8.43 ps, respectively. We also investigate the influence of wavelength detuning of different GMR modes on the transparent window and slow light performance. Furthermore, a wide-band flat-top transparent window was also achieved by appropriately adjusting the wavelength detuning between GMR modes. These results indicate that the EIT-like effect in the WGS has potential application prospects in low-loss slow optical devices, optical sensing, and optical communications.

scholarly journals Double Spectral Electromagnetically Induced Transparency Based on Double-Bar Dielectric Grating and Its Sensor Application

2020 ◽  
Vol 10 (9) ◽  
pp. 3033 ◽  
Author(s):  
Guofeng Li ◽  
Junbo Yang ◽  
Zhaojian Zhang ◽  
Kui Wen ◽  
Yuyu Tao ◽  
...  
Keyword(s):  
Slow Light ◽  
Electromagnetically Induced Transparency ◽  
Structural Parameters ◽  
Refractive Index Sensor ◽  
Dual Mode ◽  
Dual Channel ◽  
Guided Mode ◽  
Dielectric Grating ◽  
Q Factors ◽  
Induced Transparency

The realization of the electromagnetically induced transparency (EIT) effect based on guided-mode resonance (GMR) has attracted a lot of attention. However, achieving the multispectral EIT effect in this way has not been studied. Here, we numerically realize a double EIT-ike effect with extremely high Q factors based on a GMR system with the double-bar dielectric grating structure, and the Q factors can reach 35,104 and 24,423, respectively. Moreover, the resonance wavelengths of the two EIT peaks can be flexibly controlled by changing the corresponding structural parameters. The figure of merit (FOM) of the dual-mode refractive index sensor based on this system can reach 571.88 and 587.42, respectively. Our work provides a novel method to achieve double EIT-like effects, which can be applied to the dual mode sensor, dual channel slow light and so on.

scholarly journals High quality factor electromagnetically induced transparency-like effect in coupled guided-mode resonant systems

2019 ◽  
Vol 27 (5) ◽  
pp. 7712 ◽  
Author(s):  
Yunxin Han ◽  
Junbo Yang ◽  
Xin He ◽  
Jie Huang ◽  
Jingjing Zhang ◽  
...  
Keyword(s):  
Quality Factor ◽  
Electromagnetically Induced Transparency ◽  
High Quality Factor ◽  
High Quality ◽  
Guided Mode ◽  
Resonant Systems ◽  
Induced Transparency

Probing Bloch oscillations using a slow-light sensor

2020 ◽  
Vol 9 (5) ◽  
pp. 243-246
Author(s):  
Pei-Chen Kuan ◽  
Chang Huang ◽  
Shau-Yu Lan
Keyword(s):  
Phase Shift ◽  
Optical Lattice ◽  
Cold Atoms ◽  
Slow Light ◽  
Internal State ◽  
Electromagnetically Induced Transparency ◽  
Bloch Oscillations ◽  
Bloch Oscillation ◽  
Induced Transparency ◽  
Transparency Condition

AbstractWe implement slow-light under electromagnetically induced transparency condition to measure the motion of cold atoms in an optical lattice undergoing Bloch oscillation. The motion of atoms is mapped out through the phase shift of light without perturbing the external and internal state of the atoms. Our results can be used to construct a continuous motional sensor of cold atoms.

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