6533b829fe1ef96bd128982a
RESEARCH PRODUCT
Laser instabilities in a Gaussian cavity mode with Gaussian pump profile
G. J. De ValcárcelJavier F. UrchueguíaEugenio Roldánsubject
Physicseducation.field_of_studyMulti-mode optical fiberbusiness.industryGaussianPopulationPhysics::OpticsNonlinear opticsStatistical and Nonlinear PhysicsLaserInstabilityAtomic and Molecular Physics and Opticslaw.inventionsymbols.namesakeOpticslawsymbolsPhysics::Accelerator PhysicsFresnel numbereducationbusinessBeam (structure)description
We analytically demonstrate that both single-mode and multimode instabilities may occur in a Gaussian-cavity-mode laser model with Gaussian pump profile. As a necessary condition, the ratio of the beam waist to the pump waist must exceed a given limiting value, which depends on the population decay rate. For an infinitely concentrated pump the plane-wave model instability thresholds are recovered, and there exists an optimum value of the waists ratio for which the second laser threshold is minimum.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-05-01 | Journal of the Optical Society of America B |