# Basic Workflow

This section will walk you through the basic workflow of how to build and simulate a metalens using SMD PRO. Throughout this tutorial, we will be using a 50 µm x 50 µm polarization-independent metalens in air with a focal length of 50 µm (numerical aperture 0.447) at the wavelength 0.532 µm. Once the software starts, you will see the interface as shown in the image below. Click 'NEW PROJECT' to start a new project.

{% hint style="info" %}
When in need, press the F1 key while in the software to open this document.
{% endhint %}

<figure><img src="/files/6AoMbqxjpnQxxc7E62T5" alt="SIMPLE METALENS SMD PRO"><figcaption></figcaption></figure>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://simplemetalens.gitbook.io/docs/smd-pro/tutorial/basic-workflow.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.