Checking The Laser Fiber Using Pilot Laser Light - KLS Martin group Kit de préparation des fibres stérilisable Mode D'emploi

Fig. 4-11 Creating the tensile fracture
4.3.7

Checking the Laser Fiber Using Pilot Laser Light

Possible irritation from pilot laser light!
The protective goggles protect the eyes only against the working laser, but do not provide protection
against pilot laser light.
Do not look directly into the pilot laser light!
Fig. 4-12 Perfectly broken fiber (1) and unsatisfactory fracture surface (2), with associated beam spots
Fig. 4-13 Additional pilot laser images of laser fibers with damaged distal ends
32
To achieve an optically perfect fracture surface at the notch, the
laser fiber must be subjected to axial stress.
As shown in the picture, this can be achieved by fixing the laser
fiber on both sides of the notch, using two hands on the silicone
surface, REF 79-220-00-04, and bending them down on both sides
while keeping them fixed. This creates tensile stresses leading to a
tensile fracture that delivers a perfect, perpendicular fracture
surface.
After breaking the laser fiber, 1 cm of the fiber core protrudes from
the buffer.
A clean and properly prepared, optically perfect laser fiber has a
proximally offset protective buffer that is typically stripped by
approx. 1 cm and a plane fiber-core beam exit surface (1) that is
exactly perpendicular to the fiber axis. If the laser fibers are
connected to the laser with the SMA plug and the red pilot laser
beam is activated, the light beam that exits from a properly prepared
fiber laser creates a round, evenly distributed spot on a bright
surface in a distance of 5–10 meters. If the beam quality is
unsatisfactory (2, see also Fig. 4-13), the laser fiber must be
prepared again, see section 4.3.4 "Stripping the laser
fiber/waveguide", page 30.
Sterilizable Fiber Preparation Set
Instructions for Use
Revision 03