Polarization instability in lasers. II: Influence of the pump polarization on the dynamics

Zeghlache, Hassina; Boulnois, Arnaud

doi:10.1103/physreva.52.4243

Cited by 5 publications

(1 citation statement)

References 12 publications

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“…As a typical isotropic laser crystal [3] , YAG was supposed to emit lasers with unpolarized or alternate polarization states [4,5] , but it is confusing that many papers reported its direct linearly polarized output [6][7][8][9][10][11][12] . These reports also pointed out that the polarization was unstable and sensitive to pump polarization, pump power, orientations of Cr 4 ∶YAG, and so on [12][13][14][15][16] . These seriously limited its application, such as nonlinear frequency conversion and polarization-dependent amplification.…”

Section: Introductionmentioning

confidence: 97%

Self-polarization emission based on coherent combination of intracavity eigenmodes in Nd:YAG/Cr4+:YAG lasers

et al. 2021

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The behavior of self-polarization emission in Nd∶Y 3 Al 5 O 12 YAG=Cr 4 ∶YAG lasers has been proved in some cases. However, the degree and direction of polarization were often sensitive and unstable. We experimentally observed different beam profiles versus the angle of the polarizer relative to the polarization direction of the laser. In order to explore the polarization mechanism, the dynamics of intracavity polarized eigenmodes was analyzed theoretically. Simulative results were well consistent with our experimental observations. It indicated that the linear self-polarization emission was a composite state rather than an intrinsic state. This study contributed to the improvement of the polarization stability in Nd∶YAG=Cr 4 ∶YAG passively Q-switched lasers.

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