Optical coherences and wavelength mismatch in ladder systems

Urvoy, A.; Carr, C.; Ritter, R.; Adams, C.S.; Weatherill, K.J.; Löw, R.

Abstract

We investigate experimentally and theoretically the coherent and incoherent processes in open three-level ladder systems in room temperature gases and identify in which regime electromagnetically induced transparency (EIT) occurs. The peculiarity of this work lies in the unusual situation where the wavelength of the probe field is shorter than that of the coupling field. The nature of the observed spectral features depends considerably on the total response of different velocity classes, the varying Doppler shifts for bichromatic excitation fields, on optical pumping to additional electronic states and transit time effects. All these ingredients can be absorbed in a model based on optical Bloch equations with only five electronic states.

Citation

Urvoy, A., Carr, C., Ritter, R., Adams, C., Weatherill, K., & Löw, R. (2013). Optical coherences and wavelength mismatch in ladder systems. Journal of Physics B: Atomic, Molecular and Optical Physics, 46(24), Article 245001. https://doi.org/10.1088/0953-4075/46/24/245001

• Journal Article Type: Article
• Publication Date: Dec 28, 2013
• Deposit Date: Nov 14, 2013
• Publicly Available Date: Feb 12, 2014
• Journal: Journal of Physics B: Atomic, Molecular and Optical Physics
• Print ISSN: 0953-4075
• Electronic ISSN: 1361-6455
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 46
• Issue: 24
• Article Number: 245001
• DOI: https://doi.org/10.1088/0953-4075/46/24/245001