Stabilizing delivered laser energy

Details Stabilizing delivered laser energy Stabilizing delivered laser energy

H - Electricity

01

S

H01S 3/13 (2006.01) A61F 9/008 (2006.01) H01S 5/068 (2006.01)

Patent

CA 2559581

Systems and methods provide for stabilizing the amount of laser energy delivered to a target from a laser device. Generally, delivered laser energy is measured over multiple laser pulses or over time in the case of a constant wave laser. A decrease is then calculated in the delivered energy, the decrease being caused by accumulation of one or more substances, such as ozone, along the laser beam delivery path due to passage of the laser beam along the path. Using this calculated decrease, a laser device may be adjusted to compensate for the decrease in delivered energy due to the accumulated substance(s), thus stabilizing the amount of energy delivered to the target.

La présente invention concerne des systèmes et des procédés qui permettent de stabiliser la quantité d'énergie laser livrée à une cible par un dispositif laser. En général, l'énergie laser livrée est mesurée sur plusieurs impulsions laser ou sur une période de temps en cas d'un laser à onde constante. Une diminution est ensuite calculée dans l'énergie livrée, cette diminution étant provoquée par l'accumulation d'une ou plusieurs substances, telles que l'ozone, le long du trajet d'apport du faisceau laser du fait du passage du faisceau laser sur le trajet. A l'aide de cette diminution calculée, un dispositif laser peut être ajusté pour compenser la diminution d'énergie livrée, diminution due aux substances accumulées, ce qui stabilise ainsi la quantité d'énergie livrée à la cible.

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