Laser apparatus

DETAILED DESCRIPTION Therefore, the primary object of the present invention is to provide a laser apparatus wherein a pumping source for providing energy for exciting a laser medium is, when functionally disordered, automatically replaced with a spare so as to ensure the substantially continuous excitation of a laser medium during a surgical operation.
It is another object of the present invention to provide a laser apparatus wherein an auxiliary pumping source is activated to provide pumping energy for a laser medium by changing power circuits when a lowered electric current flowing through a main pumping source upon the detection of pumping energy below a predetermined value.
In accomplishing these and other objects, according to preferred embodiments of the present invention, there is provided a combination of a laser medium such as a solid-state laser rod and at least two sets of optical arrangements each including a source for providing pumping energy, one of these comprising an auxiliary optical arrangement automatically made available when the pumping source of the other is out of order.