Abstract: The invention involves a device and a procedure for refractive laser surgery on a target object. With the aid of a laser beam source, an fs-impulse laser beam is generated. A second laser beam source generates a UV laser beam. A shared scanner device utilises the fs-impulse laser beam and the UV laser beam for the scanning of the target object.

Abstract: The invention involves a device and a procedure for refractive laser surgery on a target object. With the aid of a laser beam source, an fs-impulse laser beam is generated. A second laser beam source generates a UV laser beam. A shared scanner device utilizes the fs-impulse laser beam and the UV laser beam for the scanning of the target object.

Abstract: A surgical laser system is described for customized ablation with a power stabilized, near diffraction-limited laser beam. This surgical laser beam has a pulse repetition rate of from near 500 Hz to about 1 kHz and has a relatively small spot size at both positions of the cornea and the scanner. Such a surgical laser beam enables the use of fast scanner and the implement of fast eye tracker. One embodiment of such a surgical laser source is a CW pumped solid state laser employing non-linear wavelength conversion.

Abstract: A fast and smooth scanning is described for achieving uniform ablated surface without relying on any synchronization between the laser pulses and the scanner mirror positions. The scanning takes a series of close loops and the scanning speed on each loop is fine-tuned according to the perimeter of the loop. A uniform and close-packed pulse disposition along each loop can be achieved by multiple successive scans along the loop, while the consecutive pulses of a scan can be well separated. The scanning pattern is such designed that the energy distribution is uniform for every layer and the smoothness of the ablated surface remains substantially unchanged as the number of the layer increases.