How to open PDF view page in new tab in laravel 5 using controller code?

Actually i want to open a pdf page in new tab when we save data of user,but that page where we submit the form , redirect to same page.

public function store(Request $request) {

        $user = new UserDetail([
            'full_name' => $request->get('full_name'),
            'street_address' => $request->get('street_address'),
            'city' => $request->get('city'),
            'zip_code' => $request->get('zip_code'),
        ]);

        $user->save();
        $user = UserDetail::find($user->id);

        $pdf = PDF::loadView('pdf', compact('user'));
        //return $pdf->download('invoice.pdf');
        return Redirect::away($pdf->download('invoice.pdf'));
        //return redirect('/index');
    }

any one help me?

via Chebli Mohamed