Searching for gravitationally amplified interstellar laser signals

We consider interstellar power transmission facilitated by gravitational lensing. Our study explores realistic scenarios for signal transmission and relevant detection strategies. We determine that optimal link efficiency is achieved in lensing geometries where the transmitter, lens, and receiver are closely aligned. Our findings confirm the feasibility of interstellar power transmission via gravitational lensing. Additionally, we demonstrate that laser signals, amplified by nearby stellar gravitational lenses, can be detected using established photonics and optical engineering technologies. The search for these transmitted laser signals can be conducted by networks of collaborative astronomical facilities, utilizing both ground-based and space-based instruments, thereby directly contributing to ongoing optical Search for ExtraTerrestrial Intelligence (SETI) efforts.