LUMENIS VersaPulse PowerSuite - YAG Cavity; Multiplexing Optics; Common Beam Path; Low Energy Attenuator

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FIG. 4.2: Optical Schematic
YAG CAVITY - The YAG cavity provides pulsed output of 2.1 or 1.06 (depending upon crystal)
micron wavelength light energy. The cavity is pumped with a xenon flash lamp. The lasing medium
is either a Ho:YAG or Nd:YAG rod. The rod is positioned between an HR and OC mirror. Up to four
such cavities can be housed in a single VersaPulse PowerSuite system.
MULTIPLEXING OPTICS - The multiplexing optics consist of an imaging and flat mirror for each
cavity, and the servo positioned imaging mirror. For each cavity, an imaging mirror directs the OC
output off a flat mirror to the surface of the servo positioned imaging mirror. The servo positioned
mirror can be rotated to line up with each of the up to four YAG beam paths, so that each output is
directed down a common beam path.
COMMON BEAM PATH - the servo positioned mirror output is directed through two folding mirrors
towards the fiber focusing lens. In its path are the following additional optical components.
Low Energy Attenuator - The LE attenuator can be inserted into the beam path to decrease the
treatment beam power. This allows the system to deliver pulse energies lower than the lowest
stable pulse energy available out of the YAG head.
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