Hi
I use arduino (with grbl) and CNC shield v3.51 for 100w co2 laser and driver tbb6600 and use lightburn software is arduino suitable or not
I don't know anything about CO2 lasers. What do you mean by "control"?
When I search for tbb660 I find TB6600 is a stepper motor controller. If you're using a motor to move the laser it might work if it's rated (volts & amps) for the particular motor.
It will be stable until you turn on the power. Without knowing what you have I cannot properly comment. Using the language of electronics post an annotated schematic showing exactly how you have wired your project.
I assume you want to keep your vision and not damage it so I, not knowing your background, posting a warning I found on the internet. "To protect yourself from CO2 lasers, it is essential to wear appropriate laser safety glasses with an optical density (OD) rating above 5, specifically designed to block the harmful radiation emitted by these lasers. Additionally, ensure that safety protocols are followed in the workspace to minimize exposure risks."
That is a serious laser. I don't know what the Arduino's role in the set up is, but I wouldn't trust the control of such a device to firmware written by someone who doesn't know what they're doing and running on a hobbyist-quality processor board.