Any dreams/sleep specialist here please?

Maybe you know this? 😬

Right after you wake up there's a very short time span where you can sometimes suddenly access memories of dreams you had years before and i experienced it again today after a 3 hours nap.

Is there a name for that and where can i find more information about it? Any books, studies on this particular brain state? Does lucid dreaming offer access to that area?

Among other interesting stuff, I have hanging there the most awesome alien invasion battle that ever existed and i want to access it again lol