What is the effect of a Laser on gravity

[alaa_nasef]

Hi everyone,
I have this topic ,and I searched all over the internet without any results
what is the affect of Laser Beam on cancelling the Gravity or reducing it
if anyone can refer to a reference that can help me I will appreciate it

 

[berkeman]

Welcome to the PF.

What kind of an effect are you asking about? Do you mean like laser propulsion of space probes? Or some (tiny) interaction of light with matter?

Also, is this a schoolwork assignment? For what level of class?

 

[anorlunda]

It sounds like you are writing a SF story. If so, I can move this thread to the more appropriate forum.

If you are talking about a light sail, the answer is here: https://en.wikipedia.org/wiki/Radiation_pressure
If you are talkkng about a laser thruster, the answer is here: https://en.wikipedia.org/wiki/Beam-powered_propulsion

 

[PhanthomJay]

I think the more appropriate question is
‘What is the effect of gravity on a laser beam?’
Gravity is space time curvature in the presence of mass and energy. You might want to look up the experiment where during a solar eclipse the light of a star spatially located directly behind the line of sight to the sun from earth, could still be seen because of its curved path around the mass energy of the sun. In a lesser sense, however, a. Laser does affect gravity a wee wee bit because it’s energy curves space time an o so small amount. I wouldn’t count on a laser pulse as being some sort of anti gravity wave, though.

 

[Dale]

In GR an ultra high energy laser beam would indeed produce spacetime curvature. These are the so called pp-wave spacetimes. Unfortunately, I don’t know much more than their name.