METHOD AND DEVICE FOR GENERATING A LASER BEAM, A LASER TREATMENT DEVICE AND A LASER DETECTION DEVICE

摘要

The invention relates to a laser device, comprising a laser material (1) brought into a simmer mode. A controllable source (7, 17) of additional energy (16, 20) supplies energy to the laser material (1), such that in only a desired part of the laser material (1) a lasing threshold is exceeded, and a laser beam (10) is emitted from only a desired part of the laser surface. This device makes possible to provide a laser beam in just the desired part of the laser, which allows a flexible and localized output. The invention further relates to a hair- removing device comprising a laser device according to the invention and further comprising an optical system(6) for focusing the laser beam pulses on a focal spot (12) and for positioning the focal spot in a target position, wherein the optical system (6) comprises a movable lens or a plurality of individually addressable lenses.