Laser system with controlled firing of cooling agent and laser based on applicator position

A laser system comprising:

• a base unit having a power source,
• a hand-held applicator connected with the base unit and constructed and arranged to engage biological tissue for treatment,
• position detection structure associated with the applicator constructed and arranged to determine displacement of the applicator as the applicator is moved along the engaged biological tissue,
• a laser source constructed and arranged to generate laser beam,
• a cooling system constructed and arranged to provide a source of cooling agent to the biological tissue during treatment, and
• a processor circuit connected with the position detection structure, the laser source, and the cooling system,
• wherein, based on the displacement received from the position detection structure and on a width of the laser beam as measured in the direction of displacement of the applicator, the processor circuit is constructed and arranged to trigger application of the cooling agent to the treated biological tissue, followed by a time delay, and then to trigger the laser source.