"Has anyone tried sending information into black holes using lasers yet?"
We would need one at a pretty uncomfortably close distance to perform this experiment in acceptable time and without needing insanely large amounts of energy.
Makes me wonder how close the next known black hole is. The center of the milky way?
So no, because we haven’t had lasers for 3000 years yet, and the black holes we can create here on earth last for microseconds.
[1] https://phys.org/news/2016-03-closest-black-hole.html