Not really amateur, but CubeSats for sure.
AeroCube 7 / OCSD would have already tested it, but had attitude control problems. Should relaunch in a few months. One can find plenty of detailed publications too.
ArgoMoon will be one of the next. Testing it from beyond Moon orbit, but not much is known yet.
AeroCube-7B successfully demonstrated laser communications from a CubeSat in 2018. More details from Small Sat 2018 presentation and official press release.
Radix from Analytical Space was launched in the summer of 2018 and also includes optical communications module. Radix-2 is planned for January 2019 based on this Constellations podcast.
There are over 10 CubeSats with laser transmitter payloads in development now. Several of them will launch in 2019 (Golbriak Space module on FSSCat A/B, Tesat-Spacecom module on OSIRIS etc).