Disabling browser's back button in laravel after logout

i a have developed a web application using laravel5.When i logout from the application and click the back button i still see the pages i previously visited and when i click any of the links,the application requires me to login again.How do i disable the back button of the browser so when i logout and click it i only remain at the login page. I have tried to implement normal session destroy in my controller and here is are my codes

    //step 1.find the session
    session_start();

    //step 2.unset all the session variables
    $_SESSION=array();

    //step 3.Destroy the session cookies
    if(isset($_COOKIE[session_name()])){
        setcookie(session_name(), '', time()-42000, '/');
    }

    //step 4.destroy the session
    session_destroy();

    return redirect('auth);

Help please. Thanks in advance.

via Chebli Mohamed