Dependence　of　beam　quality　on　optical　intensity　asymmetry　among　elements　in　in-phase　coherently　coupled　vertical　cavity　surface　emitting　lasers　array　is　analyzed　using　the　finite-difference　time　domain　solutions　software.　The　analysis　results　reveal　that　the　coupling　efficiency　of　in-phased　array　decreases　and　the　divergence　increases　as　the　level　of　optical　intensity　asymmetry　increases.　Furthermore,　an　addressable　separated-contact　three-element　triangular　in-phased　array　is　fabricated　and　measured　to　verify　the　analysis.　The　array　exhibits　a　relatively　high　of　coupling　efficiency　of　24%　and　a　neardiffraction-　limit　divergence　of　3.2　degrees　(1.12　times　of　the　diffraction　limit,　D.L.)　when　the　optical　intensity　of　each　element　is　adjusted　to　be　uniform.　By　degrading　the　optical　intensity　symmetry,　the　coupling　efficiency　decreases　to　17.07%　and　the　divergence　increases　to　4.03　degrees　(1.37　x　D.L.).　After　that,　a　much　larger　10　x　10　array　exhibiting　in-phase　characteristics　is　produced　and　its　beam　quality　and　optical　uniformity　are　measured　and　discussed.　Analysis　and　experiment　results　demonstrate　that　symmetric　optical　intensity　among　elements　is　essential　for　in-phased　array　to　achieve　high　beam　quality.　Employing　separate　contacts　in　the　array　is　proved　an　effective　way　to　obtain　uniform　optical　intensity　and　achieve　high　beam　quality.