Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Daisuke Yokohagi

Hidehiko Karasaki

Katsuichi Ukita

Daiji Narita

Koki Ichihashi

A laser controlling method can generate laser of stable laser pulses, and eliminate useless time from a machining procedure. The method uses a gain medium and a Q-switch, and emits exciting light to the gain medium, thereby setting the Q-switch in a continuous oscillation mode, and prepares a given Q-switch pause time before a laser pulse is generated. When the continuous oscillation is kept going longer than a given time, the control method sets a Q-switch pause time for obtaining a first laser pulse to be different from a Q-switch pause time for obtaining a second laser pulse and onward.

Laser control method, laser apparatus, laser treatment method used for the same, laser treatment apparatus

A laser machining apparatus machines a workpiece at uniform intensity by converting a COlaser beam to uniform intensity using an intensity-converting element and a phase-matching element. The optical transmission system is configured such that the starting point of the laser beam pointing vector and the exit face of the intensity-converting element are mutually conjugated with respect to the optical transmission system. This structure offers stable machining by ensuring that the laser beam always enters the intensity-converting element at its center, even if the pointing vector of the laser beam shifts.

Growing community of inventors

Osaka, Japan

Daisuke Yokohagi