Tempest Nd:YAG Laser Operator’s Manual
14
This chapter provides an introduction to the Tempest Nd: YAG laser
system. The optical layout of the head is explained in the following
section, including the different Tempest head configurations. This
section also includes the location of harmonic generators. A summary of
system specifications is given on the last page of this chapter.
This section gives an introduction to the optical layout in the Tempest
Nd: YAG laser. The standard Tempest configuration is a wide body,
with room for installing the optional attenuator and harmonics. The
Tempest is shown with optional items in Figure 2-1.
Figure 2-1. Layout of Tempest Head with Options
The Tempest employs a flash lamp-pumped Nd: YAG rod in a thermally
compensated resonator to generate radiation at 1064 nm. The resonator
is very compact, mechanically isolated from the laser housing, which
makes the system relatively insensitive to vibrations and temperature
change. The IR head is housed in a separate sealed area that requires no
adjustments in normal operation. The only time the IR head needs to be
opened is on the rare occasion that the flash lamp needs to be changed
during a maintenance procedure.
The optional optical attenuator serves to control the laser energy without
affecting the beam quality. The optical attenuator is designed to work on
the 1064 nm beam, so it is placed directly after the IR head, before any
harmonic generation crystals.
The optical attenuator consists of a half wave plate, followed by a
polarizer. The half wave plate is secured to a motorized rotating mount.
The servo motor controlled angle is set by input from the control panel.
Introduction
Optical Layout
Optical Attenuator
IR Head
Optional
Attenuator
Harmonics
Dichroics
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