laravel redirect to a new tab

I know this is an old question, but for reference you can cause a client redirect to a new window/tab from the server using

echo "<script>window.open('".$url."', '_blank')</script>";

As a side note, whether this opens the link a new window or new tab is dependent on the browser and browser settings.

Redirect::away() or Redirect:to() both are server side commands and all they do is to redirect to a url with a slight difference as mentioned in this thread

As, both are server side commands they cannot open a new tab.

You need client side code to open new tab, for example: <a href="#" target="_blank">Open in a new tab</a>