Which type of laser is most powerful if it's handheld and is able to work...

[Aashman]

...with a 90 watt power source? which one on the condition of being handheld and being able to work with a 90 watt power source?

Hydrogen fluoride laser, Argon laser, Carbon Dioxide laser, Neodymium glass laser, Carbon Monoxide laser or a Krypton laser?
Your answer is greatly appreciated,

-Aashman