Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optics Communications

Amplification without inversion and high refractive index in heterogeneous molecules

Olimpia Budrigă

Published May 9, 2014• 2 citations
Publisher
DOI
10.1016/j.optcom.2014.04.064

Related papers

High refractive index and lasing without inversion in an open four-level atomic system

Hamid Reza Hamedi, Gediminas Juzeliūnas, Ali Raheli +1 more

Optics Communications•Jan 1, 2013•19 citations

Amplification without population inversion and enhancement of refractive index with zero absorption using two-photon pumping

Vasily G. Arkhipkin, E N Minakova

The simple model is proposed for amplification of a probe optical radiation without population inversion and enhancement of refractive index at a point of vanishing absorption when a strong driving field is present at the adjacent two-photon transition. The conditions for observation of the effects have been determined.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•May 10, 1996•0 citations

Amplification without population inversion in molecules

Anindita Bhattacharjee, S. Sanyal, Krishna Rai Dastidar

Journal of Molecular Spectroscopy•Jun 14, 2005•10 citations

Quantum Interference Effects on Optical Amplification and the Index of Refraction in a Four-Level System

Huifang Zhang, Jin‐Hui Wu, Jin-Yue Gao

We construct a four-level system where a metastable state is included in an $Er^{3+}$ Doped Yttrium aluminum garnet (YAG) crystal. Because of the action of the coherent field, the traditional light amplification with inversion can be exhibited with remarkable variation. As a result, we propose a method to achieve the gain equalization by atomic coherence. At the same time, we find that the high index of refraction accompanied by vanishing absorption can also be reached in this model. We also find that a higher index of refraction with zero absorption can be easily obtained when the coherent field is off resonance.

Journal of the Optical Society of Korea•Sep 1, 2003•2 citations

Amplification of a laser beam by a single molecule

Pototschnig, Hwang, Zumofen +4 more

Quantum Electronics and Laser Science Conference•Jan 1, 2009•0 citations

Refractive Index Enhancement in Atomic Media

Nicholas Proite, Daniel Sikes, Deniz D. Yavuz

Bulletin of the American Physical Society•May 27, 2010•0 citations
We construct a four-level system where a metastable state is included in an Er3+Er^{3+}Er3+ Doped Yttrium aluminum garnet (YAG) crystal. Because of the action of the coherent field, the traditional light amplification with inversion can be exhibited with remarkable variation. As a result, we propose a method to achieve the gain equalization by atomic coherence. At the same time, we find that the high index of refraction accompanied by vanishing absorption can also be reached in this model. We also find that a higher index of refraction with zero absorption can be easily obtained when the coherent field is off resonance.