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

Journal of Optics B Quantum and Semiclassical Optics

Enlargement of the inversionless lasing domain by using broad-area cavities

J. Mompart, M. C. Torrent, V. Ahufinger, Jordi García‐Ojalvo, R Corbal n, Ramon A. Vilaseca

Published Apr 11, 2003• 4 citations
Publisher

Abstract

We investigate analytically and numerically the role of diffraction in the operation of a broad-area inversionless laser in a cascade three-level configuration. Through a linear stability analysis of the trivial non-lasing solution and numerical integration of the corresponding Maxwell–Schrödinger equations, we show that off-axis emission allows stationary inversionless lasing over a cavity detuning range much larger than in small-aspect-ratio cavities and in conventionally inverted three-level lasers. In addition, we investigate inversionless lasing in a self-pulsing regime in the presence of diffraction, which leads to rich spatiotemporal dynamics.

DOI
10.1088/1464-4266/5/3/301

Related papers

Enhancement of the inversionless lasing domain in broad-area three-level systems

J. Mompart, V. Ahufinger, R. Corbalán +3 more

This study investigates enhancement of the inversionless lasing domain in broad-area three-level systems. Through a linear stability analysis of the trivial non-lasing solution and a numerical integration of the Maxwell-Schrodinger equations, it is shown that diffraction allows the extension of lasing to a large cavity detuning domain. In addition, this work demonstrates that inversionless lasing in a self-pulsing regime still occurs in the presence of diffraction.

European Quantum Electronics Conference (EQEC)•Jan 1, 2003•0 citations

Lasing without inversion in three-level systems: Self-pulsing in the cascade schemes

J. Mompart, C. Peters, R. Corbalán

Lasing without inversion (LWI) in specific models of closed three-level systems is analyzed in terms of nonlinear dynamics. From a linear stability analysis of the trivial nonlasing solution of the homogeneously broadened systems with on-resonance driving and laser fields, we find that, near lasing threshold, resonant closed $\ensuremath{\Lambda}$ and $V$ schemes yield continuous-wave LWI while resonant cascade schemes can give rise to self-pulsing LWI. The origin of this different behavior is discussed. For parameters of a real cascade system in atomic ${}^{138}\mathrm{Ba}$ we check numerically that the self-pulsing solution is stable in a broad range of nonzero detunings. It is shown that the self-pulsing emission can still be observed when the typical residual Doppler broadening of an atomic beam is taken into account.

Physical Review A•Mar 1, 1998•0 citations

Lasing without inversion in three-level systems : self-pulsing in the cascade schemes

J. Mompart, C. Peters, R. Corbalán +1 more

Lasing without inversion (LWI) in specific models of closed three-level systems is analyzed in terms of nonlinear dynamics. From a linear stability analysis of the trivial nonlasing solution of the homogeneously broadened systems with on-resonance driving and laser fields, we find that, near lasing threshold, resonant closed Λ and V schemes yield continuous-wave LWI while resonant cascade schemes can give rise to self-pulsing LWI. The origin of this different behavior is discussed. For parameters of a real cascade system in atomic 138Ba we check numerically that the self-pulsing solution is stable in a broad range of nonzero detunings. It is shown that the self-pulsing emission can still be observed when the typical residual Doppler broadening of an atomic beam is taken into account.

•Jan 1, 1998•40 citations

Nonlinear dynamics in a single mode three-level laser without inversion

A. G. Vladimirov, Paul Mandel, Susanne F. Yelin +2 more

We characterize analytically the nature of the lasing solutions of a laser operating without population inversion. We consider models involving three-level media interacting with a strong driving field and a lasing field in the vicinity of the lasing threshold. We assess the influence of different relaxation and pumping schemes on the dynamics of these lasers. We use the atom-field detuning, the cavity detuning, and the linear gain as bifurcation parameters. Depending on their values, the stable lasing solution is shown to be cw or self-pulsing. We show that the optimal lasing operation is achieved if both the driving field frequency and the cavity frequency are out of resonance with the atomic frequencies. Physically, the lasing regimes arise from nonlinearly interacting sidebands induced in the lasing medium by atomic interference.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics•Feb 1, 1998•9 citations

Local field effects on the spatiotemporal dynamics of broad-area three-level lasers

J. Mompart, V. Ahufinger, R. Corbalán +3 more

Summary form only given. It is well known that in dense media the effective field acting on an atom/molecule is no longer the macroscopic field but the so-called local field, which is due to all external sources and to all dipole moments of the atoms/molecules within the sample except the one under consideration. The inclusion of the local field effects gives rise to the prediction of a large number of interesting phenomena in optical systems, such as spectral red shifts, mirrorless optical bistability, "piezophotonic" effects, and enhancement of inversionless gain and absorptionless index in lasing without inversion. As an example, a density of 10/sup 17/ atoms/cm/sup 3/ of sodium atoms is sufficient to give rise to a shift of about 1 GHz of the sodium D line. We analyze here the role of the local field effects on the spatiotemporal dynamics of broad-area homogeneously broadened three-level lasers. In these three-level systems, laser emission in one atomic transition is investigated while an external plane-wave driving laser couples an adjacent transition. Due to the interplay between atomic nonlinearities and light diffraction, the optical wavevector of the generated laser field develops a small component in the transverse plane, i.e., the emitted laser beam is slightly tilted with respect to the cavity-axis.

Conference on Lasers and Electro-Optics•Aug 29, 2005•0 citations

Intensity characteristics of inversionless lasers from induced atomic coherence

Yifu Zhu, Min Xiao, Yang Zhao

We analyze a laser system consisting of N closed three-level atoms confined in a single-mode cavity and derive the conditions for the onset of lasing without inversion or with inversion. We calculate the steady-state gain and lasing in the system and show that far above the lasing threshold, depending on the pumping and decay rates, the inversionless laser may operate in three different regimes, where the intensity of the laser depends linearly on N, is proportional to \ensuremath{\surd}N , or independent of N.

Physical Review A•May 1, 1994•8 citations
We investigate analytically and numerically the role of diffraction in the operation of a broad-area inversionless laser in a cascade three-level configuration. Through a linear stability analysis of the trivial non-lasing solution and numerical integration of the corresponding Maxwell–Schrödinger equations, we show that off-axis emission allows stationary inversionless lasing over a cavity detuning range much larger than in small-aspect-ratio cavities and in conventionally inverted three-level lasers. In addition, we investigate inversionless lasing in a self-pulsing regime in the presence of diffraction, which leads to rich spatiotemporal dynamics.
Lasing without inversion (LWI) in specific models of closed three-level systems is analyzed in terms of nonlinear dynamics. From a linear stability analysis of the trivial nonlasing solution of the homogeneously broadened systems with on-resonance driving and laser fields, we find that, near lasing threshold, resonant closed $\ensuremath{\Lambda}$ and VVV schemes yield continuous-wave LWI while resonant cascade schemes can give rise to self-pulsing LWI. The origin of this different behavior is discussed. For parameters of a real cascade system in atomic 138Ba{}^{138}\mathrm{Ba}138Ba we check numerically that the self-pulsing solution is stable in a broad range of nonzero detunings. It is shown that the self-pulsing emission can still be observed when the typical residual Doppler broadening of an atomic beam is taken into account.
Lasing without inversion (LWI) in specific models of closed three-level systems is analyzed in terms of nonlinear dynamics. From a linear stability analysis of the trivial nonlasing solution of the homogeneously broadened systems with on-resonance driving and laser fields, we find that, near lasing threshold, resonant closed Λ and V schemes yield continuous-wave LWI while resonant cascade schemes can give rise to self-pulsing LWI. The origin of this different behavior is discussed. For parameters of a real cascade system in atomic 138Ba we check numerically that the self-pulsing solution is stable in a broad range of nonzero detunings. It is shown that the self-pulsing emission can still be observed when the typical residual Doppler broadening of an atomic beam is taken into account.
We characterize analytically the nature of the lasing solutions of a laser operating without population inversion. We consider models involving three-level media interacting with a strong driving field and a lasing field in the vicinity of the lasing threshold. We assess the influence of different relaxation and pumping schemes on the dynamics of these lasers. We use the atom-field detuning, the cavity detuning, and the linear gain as bifurcation parameters. Depending on their values, the stable lasing solution is shown to be cw or self-pulsing. We show that the optimal lasing operation is achieved if both the driving field frequency and the cavity frequency are out of resonance with the atomic frequencies. Physically, the lasing regimes arise from nonlinearly interacting sidebands induced in the lasing medium by atomic interference.
Summary form only given. It is well known that in dense media the effective field acting on an atom/molecule is no longer the macroscopic field but the so-called local field, which is due to all external sources and to all dipole moments of the atoms/molecules within the sample except the one under consideration. The inclusion of the local field effects gives rise to the prediction of a large number of interesting phenomena in optical systems, such as spectral red shifts, mirrorless optical bistability, "piezophotonic" effects, and enhancement of inversionless gain and absorptionless index in lasing without inversion. As an example, a density of 10/sup 17/ atoms/cm/sup 3/ of sodium atoms is sufficient to give rise to a shift of about 1 GHz of the sodium D line. We analyze here the role of the local field effects on the spatiotemporal dynamics of broad-area homogeneously broadened three-level lasers. In these three-level systems, laser emission in one atomic transition is investigated while an external plane-wave driving laser couples an adjacent transition. Due to the interplay between atomic nonlinearities and light diffraction, the optical wavevector of the generated laser field develops a small component in the transverse plane, i.e., the emitted laser beam is slightly tilted with respect to the cavity-axis.
We analyze a laser system consisting of N closed three-level atoms confined in a single-mode cavity and derive the conditions for the onset of lasing without inversion or with inversion. We calculate the steady-state gain and lasing in the system and show that far above the lasing threshold, depending on the pumping and decay rates, the inversionless laser may operate in three different regimes, where the intensity of the laser depends linearly on N, is proportional to \ensuremath{\surd}N , or independent of N.