Magento-2.1 – How to Create Popup Modal

I have a popup modal which onclicks opens , I want this modal to be closed when I submit the form and get the ajax success request. I tried with

success: function(data)
   {
       //console.log('ticket added');
       this.closeModal();
   }

But it is not working , can anyone sort this out. Thanks in Advance

 <script>
    require(
      [
        'jquery',
        'Magento_Ui/js/modal/modal'
    ],
    function(
        $,
         modal
     ) {
        var options = {
            type: 'popup',
            responsive: true,
            innerScroll: true,
            title: 'Test title',
            buttons: [{
                text: $.mage.__('Continue'),
                class: '',
                click: function () {
                    this.closeModal();
                }
            }]
        };

        var popup = modal(options, $('#events_popup'));
        $("#click-me").on('click',function(){ 
            $("#events_popup").modal("openModal");
        });

    }
   );
   </script>

<div id="events_popup" style="display: none;" class="events_popup">
<script type="text/javascript">
require(
    [
        'jquery'

    ],
    function($,modal)
    {
  $("#<?php echo $_product->getId()?>").submit(function(e) {



$.ajax({

       type: "POST",
       url:  $(this).attr('action'),
       data: $("#<?php echo $_product->getId()?>").serialize(), 
       showLoader: true,
       success: function(data)
       {
           //console.log('ticket added');
           document.close();
       }
     });

    e.preventDefault(); 
  });

    }


    ); 

</script>
</div>