Numerical analysis with active phase matching of multi-line deuterium-fluoride laser beam array

Abstract

Coherent beam combination can promote the emitting power of chemical laser in the extremely high power application. To achieve chemical laser coherent combining the optical paths of each channel should be adjusted to the same for the multi-line spectral characteristic and the combination effect is highly dependent on the optical path variance. The dependence of the combination effect on the optical path variance is calculated taking deuterium-fluoride (DF) laser for example. The feasibility and the validity of the multi-line chemical laser coherent combining are discussed with different optical path variances. The coherent combination of multi-line chemical laser is not totally unattainable as long as the precise optical path control measure is involved. To achieve excellent combination effect for chemical laser with ordinary optical path control measure, line-selecting technology is commonly needed.