The battery of green laser pointer might have the short circuit burning

Usually experienced start-up, ultra-radiation, high-gain until the saturation process in its high-gain region, the light intensity and the electron beam bunching factor along the undulator exponential growth until saturation due to nonlinear effects. Light field gain occurs mainly in two stages [2]: the exponential gain region and the consequent long-standing Vlasov equilibrium [3], light field around a certain value to do a damped oscillation, the system will eventually reach the Boltzmann-Gibbs equilibrium. From the analogy of the essence, Barré and other statistics without drastic changes in relaxation (violentrelaxation,) in the collision of planetary systems based on astrophysics theory [4] and two-dimensional oscillations in the vortex of the statistical theory [5] [ 6-7]. The customer should try to master the use and maintenance needs and requirements of green laser pointer .
Remember the free-electron laser saturation electronic coarse-grained distribution function f (θ, p) according to the statistical physics micro-canonical ensemble entropy function defined appropriate derivation relative to the electronic initial state, the system's entropy function changes [1,7] (f) = - ∫ ff0lnff0 +1- ff0ln the expression of the 1-ff0dθdp (11) above, the entropy function, we only consider the contribution of the electron beam, while ignoring the contribution of the light field For simplicity, the electronic initial distribution of "Water-bag" distribution model focuses on the electronic initial bunching situation, that is e-uniform distribution within a phase cycle [0,2 π] or [-π, π] , and the electron energy is uniformly distributed within a certain range the situation. The battery of green laser pointer  might have the short circuit burning.
Initial energy spread of the results with the literature [1] the existing results can be seen from the light intensity and bunching factor in the saturated oscillation around the stable value and the initial energy of the "e (corresponding to the initial capacity bulk size) relationship, regardless of the results of numerical simulation results calculated by the statistical theory, they all decrease with the increase of e, the two results is consistent with the literature [1] has been the result of You can see that when the detuning is small, both the monoenergetic electron incident or initial will be able to scattered light intensity will increase with the detuning increases; bunching factor with the detuning increases with a decreasing trend; the results of direct numerical simulation and statistical theory procedures calculated results coincide. In this situation,  green laser pointer should be used with great care.