EDIT: Below was the preferred solution in 2014. Nowadays you should use @include, as mentioned in the other answer.
In Laravel views the dot is used as folder separator. So for example I have this code
return View::make('auth.details', array('id' => $id));
which points to app/views/auth/details.blade.php
And to include a view inside a view you do like this:
file: layout.blade.php
<html>
<html stuff>
@yield('content')
</html>
file: hello.blade.php
@extends('layout')
@section('content')
<html stuff>
@stop