Would exposing a tattoo to sunlight in between laser treatments help fade it faster?

The tattoo artist who did my tattoo told me to stay out of the sun or to be diligent with sunblock so the tattoo wouldn't fade. For two years I was very diligent with sunblock and am now undergoing laser with the Yag. The doc who does the treatment told me no sun exposure after treatments or I could have scarring. I'm wondering if sun exposure, after the healing from the treatment and in between sessions would help to hasten the fading.