Based on far-field bi-peak structure of emitter

a far-field expression model of laser diode arrays(LDA) was proposed. Bar’s non-luminescence was ubiquitous when LDA was working. On the base of theoretical model and measured data

effects of bar’s non-luminescence on beam properties of LDA were studied. The results showed that non-luminescence of some bar or several bars could not change the far-field bi-peak of LDA exceed to some distance

but other properties such as peak intensity and position of peak intensity and intensity on center axis were effected. Power of LDA was in inverse proportion to numbers of non-luminescent bars and was not changed by position variety of non-luminescent bars. The work was useful for LDA’s use

especially for the design of the beam-shaping system of LDA.