Open a new tab on button click in AngularJS

<button type="button" class="btn btn-primary" ng-click="openTab()">new tab</button>

openTab = function () {
  $http.post('www.google.com');
}

What I want is post a require and open the response html in a new tab when you click the "openTab" button. There is no method to do this with $http. I think this maybe simple, but I can't find a way.