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Related papers: Oscillation regimes of a solid-state ring laser wi…

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We present a fully quantum mechanical treatment of a single-mode atomic cavity with a pumping mechanism and an output coupling to a continuum of external modes. This system is a schematic description of an atom laser. In the dilute limit…

Condensed Matter · Physics 2009-10-31 J. J. Hope , G. M. Moy , M. J. Collett , C. M. Savage

A novel perturbation method for the stabilization of unstable intermediate states of hysteresis loop (i.e. S-shaped curve) is proposed. This method only needs output signals of the system to construct the perturbation form without…

chao-dyn · Physics 2009-10-31 Liu Yaowen , Ping Huican , Zhao Hong , Wang Yinghai

In this paper, we present a novel stochastic and spatially lumped multi-mode model to describe the nonlinear dynamics of actively Q-switched lasers and random perturbations due to amplified spontaneous emission. This model will serve as a…

We consider the phase stability of a local oscillator (or laser) locked to a cavity QED system comprised of atoms with an ultra-narrow optical transition. The atoms are cooled to millikelvin temperatures and then released into the optical…

Quantum Physics · Physics 2015-06-30 D. A. Tieri , J. Cooper , Bjarke T. R. Christensen , J. W. Thomsen , M. J. Holland

We demonstrate a diode-laser-pumped system for generation of quadrature squeezing and polarization squeezing. Due to their excess phase noise, diode lasers are challenging to use in phase-sensitive quantum optics experiments such as…

Quantum Physics · Physics 2009-11-13 A. Predojević , Z. Zhai , J. M. Caballero , M. W. Mitchell

This work demonstrates that a middle size ring laser gyroscope (RLG) can be a very sensitive and robust instrument for rotational seismology, even if it operates in a quite noisy environment. The RLG has a square cavity, $1.60\times 1.60$…

Instrumentation and Detectors · Physics 2022-11-03 E. Maccioni , N. Beverini , G. Carelli , G. Di Somma , A. Di Virgilio , P. Marsili

A multimode model of a continuously pumped atom laser is shown to be unstable below a critical value of the scattering length. Above the critical scattering length, the atom laser reaches a steady state, the stability of which increases…

Condensed Matter · Physics 2009-11-07 S. A. Haine , J. J. Hope , N. P. Robins , C. M. Savage

Due to the necessity of making a series of random adjustments after mode-locking in most experiments for preparing soliton molecules, the repeatability of the preparations remains a challenge. Here, we introduce a novel…

We demonstrate stabilisation of an ultraviolet diode laser via Doppler free spectroscopy of Ytterbium ions in a discharge. Our technique employs polarization spectroscopy, which produces a natural dispersive lineshape whose zero-crossing is…

Atomic Physics · Physics 2015-06-18 Michael W Lee , Marie Claire Jarratt , Christian Marciniak , Michael J Biercuk

We present a steady state analysis of a quantum-mechanical model of an atom laser. A single-mode atomic trap coupled to a continuum of external modes is driven by a saturable pumping mechanism. In the dilute flux regime, where atom-atom…

Soft Condensed Matter · Physics 2009-11-07 A. S. Bradley , J. J. Hope , M. J. Collett

Arm-locking frequency stabilization is a key technique for suppressing laser frequency noise in space-based gravitational-wave detectors. The robustness of the arm-locking control loop is crucial for maintaining laser frequency stability,…

General Relativity and Quantum Cosmology · Physics 2025-10-21 Yongbin Shao , Xinyi Zhao , Long Ma , Ming Xin

Currently, the German/British gravitational wave detector GEO600 is being upgraded in course of the GEO-HF program. One part of this upgrade consists of the integration of a squeezed light laser to nonclassically improve the detection…

Coupled semiconductor lasers are systems possessing complex dynamics that are interesting for numerous applications in photonics. In this work, we investigate the existence and the stability of asymmetric phase-locked states of the…

Optics · Physics 2017-10-25 Yannis Kominis , Vassilios Kovanis , Tassos Bountis

When an ion confined in a linear ion trap interacts with a coherent laser field, the internal degrees of freedom, related to the electron transitions, couple to the vibrational degree of freedom of the ion. As a result of this interaction,…

Quantum Physics · Physics 2009-11-06 G. P. Berman , A. R. Bishop , D. F. V. James , R. J. Hughes , D. I. Kamenev

Operating atom-interferometer gyroscopes outside a laboratory environment is challenging primarily owing to the instability of laser systems. To enhance the thermal stability of free-space laser systems, a compact laser system using fiber…

The passively Q-switched, self-pulsing all-solid-state laser is a device of widespread use in many applications. Depending on the condition of saturation, which is easy to adjust, different dynamical phenomena are observed: continuous wave…

We present a theory for manipulation of d-wave interaction of cold atoms with two lasers strongly driving two photoassociative transitions. The theory predicts the occurrence of a coherence between two excited ro-vibrational bound states…

Quantum Gases · Physics 2012-12-19 Bimalendu Deb

The temporal dynamics of a storage-ring Free Electron Laser is here investigated with particular attention to the case in which an external modulation is applied to the laser-electron beam detuning. The system is shown to produce…

Optics · Physics 2009-11-07 G. De Ninno , D. Fanelli , C. Bruni , M. E. Couprie

We theoretically investigate the possibility of observing resonant activation in the hopping dynamics of two-mode semiconductor lasers. We present a series of simulations of a rate-equations model under random and periodic modulation of the…

Optics · Physics 2009-11-13 Stefano Lepri , Giovanni Giacomelli

We study the dynamics of a class-B semiconductor microring laser coupled to a neutral microring resonator for common fabrication parameters. For zero detuning between the resonators, we identify five dynamical regions controlled by the…