INTRODUCTION
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Introduction
32-1 lasers incorporate the latest technology in sealed carbon dioxide devices, combining the best features
of both waveguide and free space CO2 laser technology. The all-metal laser tube construction features
the ruggedness, stable optical support, and small size of waveguide lasers. Low cost is achieved by using
simple extruded and welded aluminum structures packaged together with compact, state-of-the-art RF
power supplies.
32-1 lasers emit a laser beam with a wavelength of 10.6 microns (
μ
m). The laser beam diverges due to
diffraction at a full angle of 8 mrad (milliradians), with the beam waist at the output aperture of the laser.
Power control of the laser beam is achieved by pulse width modulation (PWM) of the RF drive circuit.
Modulation control can be used to gate the laser on and off at time intervals synchronized with automated
processing equipment. It can also be used to control instantaneous power by adjusting the pulse width
(PWM duty cycle) at a variable modulation frequency. Both methods can be used simultaneously.
Plasma section
The laser consists of an RF-excited plasma tube with an adjustable mirror on each end, mounted together
with the RF drive assembly in a single aluminum chassis. The plasma tube is made of two-inch square
cross-section extruded aluminum tubing with pre-machined ends welded on. RF drive power is applied
between the two electrodes. The internal resonant circuit induces RF drive on the upper electrode that is
180 degrees out of phase with that of the lower electrode. Thus the voltage between the two RF electrodes
is roughly twice that on either electrode. Waste heat is conducted away to the outer walls of the laser
tube, where it is transferred to the chassis.
Optical resonator
The optical resonator consists of a curved total reflector and a flat Zinc Selenide (ZnSe) output coupler.
The mirrors are held on with Viton (fluorocarbon) elastomeric o-rings for factory adjustment by means of
three screws that are secured by adhesive after alignment. The ceramic bore in conjunction with the mirror
curvatures selected favors a Gaussian (TEM00) mode.
Figure 4-1 Beam characteristics.
Controlling Circuitry
Summary of Contents for 32-1 Laser
Page 1: ...ENGINEERED BY SYNRAD 32 1 Laser User Manual...
Page 19: ...32 1 LABEL LOCATIONS PAGE 19 32 1 label locations Figure 2 3 38 1 Hazard label locations...
Page 25: ...ELECTROMAGNETIC INTERFERENCE STANDARDS PAGE 25 Figure 2 1 32 1 Declaration Document...
Page 26: ...ELECTROMAGNETIC INTERFERENCE STANDARDS PAGE 26 Figure 2 5 continued 32 1 Declaration Document...
Page 41: ...I O FAULT DIAGRAMS PAGE 41 I O Fault Diagrams Table 4 6 DB 9 pin assignments...
Page 57: ...INDEX PAGE 1...
