Optical switching property of electromagnetically induced transparency in a lambda system

Lianshui Zhang; Jian Wang; Xiaomin Feng; Lijun Yang; Xiaoli Li; Min Zhao

doi:10.1117/12.824653

19 March 2009 Optical switching property of electromagnetically induced transparency in a Λ system

Lianshui Zhang, Jian Wang, Xiaomin Feng, Lijun Yang, Xiaoli Li, Min Zhao

Proceedings Volume 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage; 712514 (2009) https://doi.org/10.1117/12.824653
Event: Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 2008, Wuhan, China

Abstract

In this paper we study the coherent transient property of a Λ-three-level system (Ω_d = 0) and a quasi- Λ -four-level system (Ω_d>0). Optical switching of the probe field can be achieved by applying a pulsed coupling field or rf field. In Λ -shaped three-level system, when the coupling field was switched on, there is a almost total transparency of the probe field and the time required for the absorption changing from 90% to 10% of the maximum absorption is 2.9_Γ0 (_Γ0 is spontaneous emission lifetime). When the coupling field was switched off, there is an initial increase of the probe field absorption and then gradually evolves to the maximum of absorption of the two-level absorption, the time required for the absorption of the system changing from 10% to 90% is 4.2_Γ0. In four-level system, where rf driving field is used as switching field, to achieve the same depth of the optical switching, the time of the optical switching is 2.5_Γ0 and 6.1_Γ0, respectively. The results show that with the same depth of the optical switching, the switch-on time of the four-level system is shorter than that of the three-level system, while the switch-off time of the four-level system is longer. The depth of the optical switching of the four-level system was much larger than that of the three-level system, where the depth of the optical switching of the latter is merely 14.8% of that of the former. The speed of optical switching of the two systems can be increased by the increase of Rabi frequency of coupling field or rf field.

Citation Download Citation

Lianshui Zhang, Jian Wang, Xiaomin Feng, Lijun Yang, Xiaoli Li, and Min Zhao "Optical switching property of electromagnetically induced transparency in a Λ system", Proc. SPIE 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 712514 (19 March 2009); https://doi.org/10.1117/12.824653

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Optical switching

Absorption

Transparency

Switching

Chemical species

Quantum information

Quantum optics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years