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Theory of Field Structure in a Laser Cavity
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A. F. Suchkov active medium ampliﬁer amplitude and phase amplitude distribution aperture arbitrary axisymmetric Bessel beam Bessel function boundary conditions calculation coefﬁcient complex amplitude corresponding crystal decreases dependence determined diaphragm diaphragm axis dielectric constant diffraction angles directivity pattern distance Eksp electromagnetic ﬁeld electron emission end face energy ﬁeld amplitude ﬁeld distribution Figure ﬁlters ﬁrst focusing frequency Fresnel diffraction gain Gaussian beam giant pulse Green’s function increase inﬁnite inﬂuence initial inverted population investigation lasing regime lasing threshold lens linear losses maximum method mirrors nonlinear medium nonlinear parabolic equation nsec observation angle obtain open cavity optical inhomogeneities oscillation modes parameters plane wave propagation pump radius reﬂection refractive index refractive-index Russian scalar self-consistent self-focusing semiconductor lasers solution solve spatial spatiotemporal speciﬁc spherical spike spontaneous emission stationary structure sufﬁcient Teor three-dimensional transverse modes vector Kirchhoff approximation Volume wave front waveguide zero