This question (basically an analogy ) is inspired by several questions and answers that appeared on stackexchange.
We first define GASER, for the purpose of this question.
GASER - gravitational (wave) amplification by stimulated emission of (gravitational ) radiation.
Many relevant questions and answers (relevant in relation to my question) can be found on stackexchange.
Chirped pulse amplification, combined with fibre lasers and spectral beam combining can lead to some very powerful lasers.
Black holes (even microscopic ) cannot yet be created and manipulated at will. Assuming this will be possible in the future (that's a big IF , but this is a theoretical question ), are there any suitable distributions of black holes ( and regular matter ) in space - time that would make a GASER possible?