A pulsed laser for medical application and particularly for ophthalmological treatment is described.
The laser beam pulse has a clearly defined polarization plane. By rotating a polarization splitter cube, it is possible to regulate the energy of the laser beam pulse.
Following each rotation of the polarization splitter cube, and prior to the following treatment pulse, a control system releases a test pulse. The energy of the test pulse is measured while the shutter closes the treatment beam path.
According to a preferred embodiment, the laser is a neodymium-YAG laser.