Do you mean etching or are you actually wanting to cut the glass?
The laser won’t cut glass, but it can etch it. If you’re looking to etch the glass that’s easy. Do you have a picture of the image you want to etch on and what you want to etch it onto?
Actually I want to put some stencil tape (not vinyl I know that) on the glass and cut through that. So fast speed laser cutting with 25% power should do the trick.
I would be especially cautious of etching handblown glass. I suspect it might have more internal tensions and would be more prone to “high-speed deconstruction” compared to pressed glass.