The text Remesh modifier will re-mesh the old text with a more uniform one.

To do so select your text and, while in wireframe mode (in order to see the results), convert your text to a mesh by clicking ALT+C and then Mesh from Curve/surf/text, since the text is made from disconnected pieces uncheck "Remove disconnected pieces" in order the modifier to be applied to all of the letters...Then increase Resolution by increasing Octree Depth value around 8 depending on the text length.

Before:

Next to lighting from the background and any object with an emission shader, lamps are another way to add light into the scene. The difference is that they are not directly visible in the rendered image, and can be more easily managed as objects of their own type.

For this example -educational purposes- we are using one single lamp located above the camera, We've tried 4 different Lamp Types using the same strength, size and max bounce *: