Improvement　is　made　in　the　traditional　spectral　beam　combining　structure　by　adding　beam　shaping　element,　namely　Beam　Transformation　System　(BTS).　Spectral　beam　combination　is　performed　in　a　horizontal　direction　by　the　external　cavity　after　beam　shaping.　The　effect　of　smile　and　the　divergence　of　the　slow　axis　are　reduced.　A　standard　semiconductor　laser　array　is　used　in　this　experiment.　A　CW　output　power　of　58.8　W　and　an　electro-optic　conversion　efficiency　of　51%　are　achieved.　The　spectral　line-width　is　12.7　nm.　M-2　of　1.3　x　11.6　in　horizontal　and　vertical　directions　are　obtained.　The　beam　quality　of　the　output　is　close　to　that　of　a　single　emitter　of　the　array　in　two　directions.　(C)　2014　Optical　Society　of　America