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

Acta Physica Sinica

LASERS WITHOUT INVERSION VIA OPTICAL PUMPING

Xiangming Hu, 华中师范大学应用物理研究所,武汉430070

Published Jan 1, 1993• 1 citation
Publisher

Abstract

Both nondegenerate Λ-and V-type laser systems can produce lasers without inversion via optical pumping.
DOI
10.7498/aps.42.1928

Related papers

COLLISION EFFECTS IN THE QUENCHING OF OPTICAL PUMPING AND LASING WITHOUT INVERSION: THEORY AND EXPERIMENT

M. Graf, Marlan O. Scully, Dmitri E. Nikonov +4 more

•May 1, 1994•0 citations

LANGEVINIAN THEORY OF TWO-PHOTON LASERS BY OPTICAL PUMPING

Xiangming Hu, Wang Dexin, 华中师范大学物理系,武汉,430070

In this paper, a two-photon laser by optical pumping, with two-photon losses, is studied by means of the Langevinian theory, the langevinian equation is obtained. Then the steady-state average photon number, the frequency pulling, the linewidth and the dynamical Stark effect are obtained. From the analysis of the gain, it is shown that, for the incoherent pumping, only the two-step process of single-and two-photon gives contribution. And for the coherent pumping, in addition, the one-step process of single and two-photon also contributes. And two processes are confined by the negative-feedback and saturation. The linewidth is independent of the steady state average photon number.

Acta Physica Sinica•Jan 1, 1992•0 citations

Lasing without inversion versus optical pumping and lasing without inversion assisted by optical pumping

Michael Fleischhauer, Marlan O. Scully

Optics Communications•Jan 1, 1994•13 citations

Lasing without inversion: progress and prospects

Olga A. Kocharovskaya

We review the recent achievements both in the theory and experiment on lasing without inversion. We discuss also the potential applications of these novel laser sources and the prospects for the further development of this domain.

17th Congress of the International Commission for Optics: Optics for Science and New Technology•Sep 1, 1996•0 citations

The coherently pumped laser: The simplest system for lasers without inversion

Ning Lü

Optics Communications•Nov 1, 1989•21 citations

DEGENERATE TWO-PHOTON LASERS: LASING WITHOUT INVERSION AND INVERSION WITHOUT LASING

Xiangming Hu, 华中师范大学应用物理研究所

In this paper, it is revealed that, degenerate two-photon lasers can show both lasing without inversion and without lasing, for two proper atom-field coupling coefficients, under the condition of equal atomic decay rates, not too large single-photon detunings, and not too saturation.

Acta Physica Sinica•Jan 1, 1994•0 citations
In this paper, a two-photon laser by optical pumping, with two-photon losses, is studied by means of the Langevinian theory, the langevinian equation is obtained. Then the steady-state average photon number, the frequency pulling, the linewidth and the dynamical Stark effect are obtained. From the analysis of the gain, it is shown that, for the incoherent pumping, only the two-step process of single-and two-photon gives contribution. And for the coherent pumping, in addition, the one-step process of single and two-photon also contributes. And two processes are confined by the negative-feedback and saturation. The linewidth is independent of the steady state average photon number.