Jump to content

crossing lazers


alan2here

Recommended Posts

Having two hydrogen lazer beams cross can results in plasma being created in the air. How many of the most powerfull sort of nexus lazers would need to be crossed\what sort of focusing optics would be required to create a human visible amount of plasma?

Link to comment
Share on other sites

i think you need an energy density of 1MJ per cubic centimeter to get plasma formation. once it starts it should be able to be maintained with less lasers as the plasma will absorb a significant amount of energy from the beams.

 

also, pet peeve of mine, LASER(Light Amplification by the Stimulated Emission of Radiation) not 'lazer'.

Link to comment
Share on other sites

The most powerfull hand held battery powered one I could find is.

 

http://www.dragonlasers.com/catalog/Hulk-Ultra-350mW-p-16193.html

 

at 350mW to 400mW

 

Also on the website is a small lazer forcuser that can be attached to the end and ajusted.

 

Would I need 3 crossings? This sounds a little small as then one focused beam seems like it might work and it probbably dosn't or somebody would have already noticed. I also forgot to factor in distance and that mW is possibly not the same as MJ.

Link to comment
Share on other sites

The most powerfull hand held battery powered one I could find is.

 

http://www.dragonlasers.com/catalog/Hulk-Ultra-350mW-p-16193.html

 

at 350mW to 400mW

 

Also on the website is a small lazer forcuser that can be attached to the end and ajusted.

 

Would I need 3 crossings? This sounds a little small as then one focused beam seems like it might work and it probbably dosn't or somebody would have already noticed. I also forgot to factor in distance and that mW is possibly not the same as MJ.

 

It's laser, there's an s, it's an acronym!

 

You don't just need to know the power, but the power density, and how tight you can get the focus depends both on the optics you use to do it and how collimated the beam is to start with. The laser I use ever day cost around £500000, and I've never seen it cause a plasma in air, there's a focus that is under 1mm of about 10% of the light, and that doesn't do it.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.