It's laser surgery. Lasik is on the eyes.
Whether or not it will work for you depends completely on the details of your problems. Like any other specialized technique, success is very dependent on the skill of the surgeon.
I would urge you to take all less drastic steps before considering surgery of any kind, and any ethical doctor will do the same. Physical therapy is a GREAT help to back problems, if you will go to therapy AND do your excercises diligently.
I've been doing stretch and strengthening exercises daily for 4 years, and have very little pain, although my spine x-rays look like I shouldn't be able to walk.