To my knowledge, there is no laser breast enhancment procedure. Lasers are used by very few plastic surgeons to de-epithelialize or peel the top layers of skin off during a breast reduction or breast lift. This is usually accomplished with a scalpel, however, there may be marketing benefits to use the word 'laser' with a procedure. I am not aware of lasers used for augmentation procedures alone.
Where did you read about this? I didn't know it even existed. There is one surgeon who promotes the concept of the laser breast lift. This essentially uses a laser to subsititute for a portion of the procedure. Can you forward any references?