Even though laser beams have no mass, they do have a tiny amount of gravity, which allows them to drag and warp space and slow down time as they propagate
Revealing the Start of Time Itself: Ripples in the Fabric of the Universe May Peer Back to the Beginning of Everything We Know
News – latest in science and technology, Page 1937
How does NASA intend to warp space in pursuit of building an Alcubierre warp drive? - Quora
NASA — How Gravity Warps Light
Livingston observatory to research Einstein's gravitational wave theory, Environment
Can space time have oscillations of expansions and contractions, sustained or otherwise damped? - Quora
Einstein's general relativity revealed a violent universe - Century of Science
Technology Laser Light In Future Technology Abstract Of, 51% OFF
Lasers news, articles and features, Page 3
Can space time have oscillations of expansions and contractions, sustained or otherwise damped? - Quora