Statistical analysis of phase locking of optically coupled lasers with external injection of low-noise radiation

Bel'dyugin, Igor' M; Zolotarev, M V; Shinkareva, I V

doi:10.1070/qe1997v027n01abeh000812

Cited by 4 publications

(1 citation statement)

References 10 publications

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“…The principle of the regenerative amplification of the picosecond USP is already realized in an injection seeding method [1][2][3][4]. Developed nowadays by some authors this method allows to be approximated to creation of the powerful compact laser source of pico-and femtosecond range.…”

Section: Introductionmentioning

confidence: 99%

Threshold lowering of an injection-seeding regime in the presence of periodic losses modulation in the laser

Anikeev

Zatrudina

Rudov

2001

Laser Optics 2000: Ultrafast Optics and Superstrong Laser Fields

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In development of a known method of an regenerative amplification of low-power picosecond pulses (the injection seeding method) its modification -the method of injection locking (IL) of master laser with the amplifying laser (laser with short-term resonance modulation of losses -STRML-laser) is offered. The use of the STRML-laser as the regenerative amplifier allows to lower a level ofthe laser -injector power on two -fourorder. For the neodymium laser with an output pulse energy 1-2 J this power can be lowered up to 1 W, and the reliable capture can be carried out with 5W. It enables to realize the circuit of self-injection in the STRML-laser by adding a nonlinear passive modulator in a cavity. Thus at a beginning of linear stage it is possible to "sow" pulses resulting in generation of much more short on a comparison with realized in a STRML-regime with preservation ofremaining positive qualities ofthis laser.On experimental established optical properties of a passive modulator on base of computer model of the STRMLlaser checked earlier by physical experiments a reality of a realization of this circuit numerically is confirmed. The experiments with film modulator convince of a possibility of a regenerative amplification of the picosecond ultra-short pulses (USP) in itself laser up to greatest possible (from reasons of optical durability) energies.

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Section: Introductionmentioning

confidence: 99%

Threshold lowering of an injection-seeding regime in the presence of periodic losses modulation in the laser

Anikeev

Zatrudina

Rudov

2001

Laser Optics 2000: Ultrafast Optics and Superstrong Laser Fields

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Phase locking of optically coupled lasers

Glova

2003

Quantum Electron.

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The integration of electroanatomic maps with highly resolved computed tomography cardiac images plays an important role in the successful planning of the ablation procedure of arrhythmias. In this paper, we present and validate a fully-automated strategy for the registration and fusion of sparse, atrial endocardial electroanatomic maps (CARTO maps) with detailed left atrial (LA) anatomical reconstructions segmented from a pre-procedural MDCT scan. Registration is accomplished by a parameterized geometric transformation of the CARTO points and by a stochastic search of the best parameter set which minimizes the misalignment between transformed CARTO points and the LA surface. The subsequent fusion of electrophysiological information on the registered CT atrium is obtained through radial basis function interpolation. The algorithm is validated by simulation and by real data from 14 patients referred to CT imaging prior to the ablation procedure. Results are presented, which show the validity of the algorithmic scheme as well as the accuracy and reproducibility of the integration process. The obtained results encourage the application of the integration method in post-intervention ablation assessment and basic AF research and suggest the development for real-time applications in catheter guiding during ablation intervention.

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Nonlinear dynamics of a solid-state laser with injection

Yeung

Strogatz

1998

Phys. Rev. E

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We analyze the dynamics of a solid-state laser driven by an injected sinusoidal field. For this type of laser, the cavity round-trip time is much shorter than its fluorescence time, yielding a dimensionless ratio of time scales Ӷ1. Analytical criteria are derived for the existence, stability, and bifurcations of phase-locked states. We find three distinct unlocking mechanisms. First, if the dimensionless detuning ⌬ and injection strength k are small in the sense that kϭO(⌬)Ӷ 1/2 , unlocking occurs by a saddle-node infinite-period bifurcation. This is the classic unlocking mechanism governed by the Adler equation: after unlocking occurs, the phases of the drive and the laser drift apart monotonically. The second mechanism occurs if the detuning and the drive strength are large: kϭO(⌬)ӷ 1/2 . In this regime, unlocking is caused instead by a supercritical Hopf bifurcation, leading first to phase trapping and only then to phase drift as the drive is decreased. The third and most interesting mechanism occurs in the distinguished intermediate regime k, ⌬ϭO( 1/2 ). Here the system exhibits complicated, but nonchaotic, behavior. Furthermore, as the drive decreases below the unlocking threshold, numerical simulations predict a self-similar sequence of bifurcations, the details of which are not yet understood. ͓S1063-651X͑98͒05510-X͔ PACS number͑s͒: 05.45.ϩb, 42.65.Sf, 42.60.Mi, 42.55.Rz

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Statistical analysis of phase locking of optically coupled lasers with external injection of low-noise radiation

Cited by 4 publications

References 10 publications

Threshold lowering of an injection-seeding regime in the presence of periodic losses modulation in the laser

Threshold lowering of an injection-seeding regime in the presence of periodic losses modulation in the laser

Phase locking of optically coupled lasers

Nonlinear dynamics of a solid-state laser with injection

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