Self-consistent spatial mode analysis of self-adaptive laser oscillators (original) (raw)
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IEEE Journal of Quantum Electronics, 2000
The spatial-mode characteristics are studied for a three-mirror resonator consisting of a diffractive aspheric third mirror aligned collinearly with a standing-wave two-mirror resonator. Simulations predict that enhanced spatial-mode selection and mode shaping can be achieved by this three-mirror cavity. A three-mirror Nd:YVO 4 solid-state laser with an optimized aspheric third mirror has been designed and implemented to oscillate in a designed fundamental Gaussian mode. The modal discrimination was measured to be 1.43 and the propagation factor 2 was 1.02.
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We present an analysis of resonator properties for a cavity bounded by a phase conjugate mirror, which is generated by a degenerate four-wave nonlinear optical interaction. Using a ray matrix formalism to describe the conjugate mirror, resonator stability conditions are derived. Longitudinal and transverse mode characteristics are discussed. Results are compared with an experiment where laser oscillation was observed at
Three-mirror resonator with aspheric feedback mirror for laser mode selection and mode shaping
Conference on Lasers and Electro Optics 2003 Cleo 03, 2003
The spatial-mode characteristics are studied for a three-mirror resonator consisting of a diffractive aspheric third mirror aligned collinearly with a standing-wave two-mirror resonator. Simulations predict that enhanced spatial-mode selection and mode shaping can be achieved by this three-mirror cavity. A three-mirror Nd:YVO 4 solid-state laser with an optimized aspheric third mirror has been designed and implemented to oscillate in a designed fundamental Gaussian mode. The modal discrimination was measured to be 1.43 and the propagation factor 2 was 1.02.
The dynamics of a laser resonator is presented. It is shown that a non-linear dynamic behaviour takes place when a chaos generating element is introduced within the resonator. The analysis of a laser resonator using ABCD matrix formalism is showed for the case where these elements are present in the resonator. Assuming a ray inside the resonator with parameters y(z) and θ(z) for the effective distance to the optical axis z and angle to the same axis confined in the resonator we obtain expressions for the n-th trip y(z) n and θ(z) n . In particular an expression for y(z) n+1 of the form: y n+1 = ay n (l −y n ) is obtained. Chaotic regions are shown in a simple bifurcation diagram. The dynamics of the resonator can be modified by the change of the resonator parameters. Finally the characteristics of the chaos generating elements is discussed and the matrix elements of a chaos generating matrix [a, b, c, e] are presented.