In　this　paper,　the　nematic　liquid　crystal　layer　is　used　as　the　laser　polarization　control　unit,　which　is　integrated　on　the　surface　of　the　vertical-cavity　surface-emitting　laser　(VCSEL)　array.　The　optical　power　anisotropic　loss　characteristics　of　the　orthogonal　polarized　light　emitted　by　the　VCSEL　array　when　passing　through　the　nematic　liquid　crystal　with　different　rotation　directions　and　the　resulting　impact　on　the　polarization　characteristics　are　measured　and　analyzed.　The　experimental　results　show　that　the　maximum　orthogonal　polarization　suppression　ratio　(OPSR)　of　VCSEL　array　increases　from　2.31dB　to　5.05dB　when　the　rotation　direction　of　the　liquid　crystal　is　adjusted　from　45°　to　0°,　while　the　90°　rotation　can　completely　eliminate　the　polarization　switching,　and　obtain　a　stable　output　of　single　polarized　light.　The　experimental　results　provide　a　new　scheme　for　VCSEL　single　unit　and　array　to　achieve　high　quality　single　polarization　output.　©　2023　SPIE.