Get second page of Author's post for WP While loop

I have an author page (author.php) which shows his 10 posts or page 1 with “View more” button at the bottom. After clicking “View more” button I want to fetch next page of author’s post. I am implementing this using Ajax for infinite scrolling.

function wp_infinitepaginate() {
    $loopFile = $_POST['loop_file'];
    $paged = $_POST['page_no'];
    $posts_per_page = get_option('posts_per_page');

    # Load the posts
    query_posts(array('paged' => $paged));
    get_template_part($loopFile);
    wp_reset_query();

    exit;
}

add_action('wp_ajax_infinite_scroll', 'wp_infinitepaginate');

In loop file I am having simple loop to display posts

while (have_posts()) : the_post();

But this loop prints all the posts in the site!! How can I make it print from second page of author’s page.

If I have made it complicated, here is easy version I am using wordpress while loop twice in same page. Suppose first while loop fetches page 1 then, How will second while loop fetch page 2?

I followed this tutorial if this helps to understand : Infinite scroll tutorial