16
| Operation
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Ultra
Version M 22-April-2012
3.0 Remote Interlock
This BNC Connector provides an interface for an external safety
shutdown switch. The Remote Interlock can be connected to a lab
door or other system outputs for safety purposes. When using the
Remote Interlock, only an isolated switch, such as a relay, should be
used in order to avoid ground loops. If external safety switches are
used, it is important that they are connected in series.
The Remote Interlock connection must be completed in order to
operate the laser. If an open circuit occurs, the ICE high voltage is
disabled and the Fault indicator is illuminated.
The system is shipped with the BNC shorting cap attached on this
connector. Leave this connector in place if this function is not needed.
OPERATION
1.0 Safety
CAUTION:
Obey all safety procedures described in the Safety
section of this manual.
CAUTION:
Wear eye protection. Follow safety precautions as
though the system is capable of lasing at anytime.
2.0 Precautions
Follow these guidelines to avoid laser damage.
•
Store the laser in a dust-free environment. Keep the Laser Head
covered when not in use. This protects the output window from
dust and particulate.
•
The Laser Head is sealed using low-outgassing materials.
Silicone and similar sealing, bonding or insulating materials
should not be used in close proximity to the Laser Head since
these substances will outgas and could contaminate the output
window, causing laser damage.
•
Avoid back reflections. Back reflections of even a small
percentage of the output energy can damage optical components
in the Laser Head.
Example: An uncoated convex lens or a glass disk calorimeter
reflects about 4% of the incident energy. While the reflection may
seem harmless, it can perturb the resonator operation and degrade
the near-field beam intensity profile and damage laser optics. It may
also affect the resonator holdoff, causing prelasing and catastrophic
optical damage. In some cases, even anti-reflection coated glass
optics reflect enough energy to damage laser optics. It is best to
use only quality optics coated for the operating wavelength.
CAUTION:
To avoid laser damage, minimize back reflections of
the output beam. When reflections are unavoidable, direct
them away from the optical axis of the system by canting the
optics off-axis. Failure to do so can cause laser damage and
void the warranty.
CAUTION:
Use of controls or adjustments or
performance of procedures other than those specified
herein may result in hazardous radiation exposure.
