Characteristics of nuclear-pumped lasers based on the 3p—3s transitions in the neon atom

Abstract

Through detailed quantum calculations, the presence of classical discrete breathers and, subsequently, a two-phonon bound state (TPBS) or quantum breather (QB) state have already been shown in nonlinear photonic materials such as ferroelectrics. The latter was done in a periodic boundary condition in terms of the variations of TPBS parameters against impurity that is related to nonlinearity. Metamaterials are also nonlinear optical materials for applications as a split-ring-resonator (SRR) in antenna arrays. By using a Klein-Gordon approach, first multi-solitons and classical breathers are shown. For QBs, by using a periodic boundary condition, the variation of the TPBS parameters with coupling within the SRR elements is observed. Finally, in a non-periodic boundary condition approach, the temporal evolution of the number of quanta is shown eventually in order to derive the critical time of redistribution of quanta that is proportional to the QB's lifetime in femtoseconds, which also shows variation with coupling in the SRR system.

High Energy and Short Pulse Lasers

“…Obtained within the experiment efficiency values for NPL operating on neon (to 0.1%) are much lower than at pumping by electron beam [84,85]. Threshold values of thermal neutron flux density are significantly higher than 10 14 n/cm 2 s [87][88][89][90][91][92][93]. Report [90] on NPL lasing in 3 He-Ne-H 2 mixture with a lasing threshold of 10 14 n/cm 2 s is doubtful, as hydrogen at a pressure of 0.57 bars must be considerably quenching the upper laser level.…”

Nuclear-Induced Plasmas of Gas Mixtures and Nuclear-Pumped Lasers

“…Obtained within the experiment efficiency values for NPL operating on neon (to 0.1%) are much lower than at pumping by electron beam [84,85]. Threshold values of thermal neutron flux density are significantly higher than 10 14 n/cm 2 s [87][88][89][90][91][92][93]. Report [90] on NPL lasing in 3 He-Ne-H 2 mixture with a lasing threshold of 10 14 n/cm 2 s is doubtful, as hydrogen at a pressure of 0.57 bars must be considerably quenching the upper laser level.…”

Optical Emission of the Nuclear-Induced Plasmas of Gas Mixtures

“…The lasing threshold was not achieved. Further theoretical research [19,20] and experiments conducted by other organisations [21][22][23] indicated that the lasing threshold for the line at 585 nm exceeds 10 14 n/cm 2 s. The processes involved in the active media of lasers at the 3p-3s transitions of NeI are considered to be well studied [19,24]: the population of the upper laser level occurs primarily because of the dissociative recombination of Ne 2 + and HeNe + molecular ions. Under relatively weak pumping, HeNe + ions also form Ne 2 + ions through the following substitution reaction:…”