I WANT TO DESIGN A RF CAVITY FOR A LASER

[eltonjohn]

I HAVE A PROJECT AND I NEED TO DESIGN A C02 LASER
LASING HAS TO BE PRODUCED INSIDE A RF CAVITY

ANY HELP OR INSIGHT WILL BE APRECIATED

 

[eltonjohn]

ho much power is required?

Hi friends I'm still looking for this . any insight in how much field will be required to exite a c02 gas to lase ?

 

[jpsmith123]

You want to use a cavity, e.g., a cylindrical cavity operating in a TM010 mode, is that right?

Regards,
Joe

 

[eltonjohn]

Hi yes exactly y want a cilindrical cavity .. and i need to know how much power i need to applied to lase
thanks

 

[eltonjohn]

Hi jpsmith
Yes a cavity in TE10 will do i need to get the ecuations relating field to
lase tresheshold for c02 mixture in a close enviroment.

 

[jpsmith123]

That sounds like an interesting project.

It seems to me you could approximate the power requirements based on the typical parameters of more conventional designs, since the basic CO2 laser physics would still apply.

In other words, say your active length would be 33 cm; a conventional dc or rf driven design might give you 20 to 30 watts out at 10 to 15 percent efficiency...so, picking something in the middle...maybe 200 watts in to get 20 to 30 watts out.

I wonder what the impedance would look like?

Before it ionizes, you'd have a high impedance, and consequently a high E field on the cavity axis, which, it seems to me would facilitate ionization; after which the impedance would be much lower.

 

[eltonjohn]

you got it jpsmith123 .!
I thought to go a similar path by applying enough power and then see how much was necessary to sustain the lasing effect
I have not been able to find any documentation on that field
i will love to simulate it first ,instead of building a go by project
an loosing time and money !