... is vertical structure, using the low order mode carbon dioxide laser, laser mode is good, focusing spot small, power density, wavelength ... radius of 110cm Type of sealed-off CO2 laser laser Low order mode laser mode Laser wavelength 10.6μm Divergence angle 4mrad Focusing ... ) Pulse width of 0.02 ~ 0.99s Direct light red semiconductor laser (650nm, 2mW) 7 joint spring balanced transmission system arm ...