I guess you very well could.
But for this, you need to assign the chart object URI to a $scope variable. Something like this -
var chart = new google.visualization.ColumnChart(document.getElementById('canvas_dahs'));
chart.draw(data);
// Store this variable
$scope.chartURI = chart.getImageURI();
Now, since you have the image uri already, you can introduce a button in your view , which once clicked will open a window with the URI above. Or you can opt for an anchor tag with url as the chartURI. But I would leave the implementation details on you.
Hope this helps....