Ophir Optronics Ltd QSR Manuel D’Utilisation
Chapter 6 – Measuring with the Pyroelectric and PD10 Heads
Configuring Measurement Settings
Warning:
Before using the head for frequency or energy measurements, make sure
that your laser power, energy, and energy density do not exceed the
head ratings listed in the specifications table for the specific head.
Otherwise, you may damage the absorber. Refer to the Ophir Laser
Power/Energy Measurement, at
head ratings listed in the specifications table for the specific head.
Otherwise, you may damage the absorber. Refer to the Ophir Laser
Power/Energy Measurement, at
,
for full details on
each head.
A test slide is provided with each pyroelectric head, which contains the
same coating as the pyroelectric detector. (You can obtain additional
slides from your supplier.) Use this slide to test the damage threshold of
your laser pulses. If the laser pulses damage the slide, either enlarge
the beam or lower the laser energy until no damage is detected.
To measure pyroelectric energies properly, it is important that the head
is not grounded to the optical bench. Make sure that the head is isolated
electrically from the ground. Each pyroelectric head is supplied with an
insulating mounting post for this purpose.
same coating as the pyroelectric detector. (You can obtain additional
slides from your supplier.) Use this slide to test the damage threshold of
your laser pulses. If the laser pulses damage the slide, either enlarge
the beam or lower the laser energy until no damage is detected.
To measure pyroelectric energies properly, it is important that the head
is not grounded to the optical bench. Make sure that the head is isolated
electrically from the ground. Each pyroelectric head is supplied with an
insulating mounting post for this purpose.
Configuring Measurement Settings
If you are planning to repeat similar measurements, you can configure the
settings for each individual head, and save them to the USBI, Pulsar or Quasar
device. The saved settings become the default configuration for that channel, and
are displayed every time the channel is opened.
settings for each individual head, and save them to the USBI, Pulsar or Quasar
device. The saved settings become the default configuration for that channel, and
are displayed every time the channel is opened.
The following sections describe how to select the measurement mode, how to
configure measurement settings for pyroelectric heads and how to save them as
the default configuration for that channel. The measurement setting fields differ
for frequency and energy modes. Measurement settings include: laser
wavelength, power range, diffuser, pulse width, and average reading. In addition
to these measurement settings, the Pulsar device includes an external trigger.
configure measurement settings for pyroelectric heads and how to save them as
the default configuration for that channel. The measurement setting fields differ
for frequency and energy modes. Measurement settings include: laser
wavelength, power range, diffuser, pulse width, and average reading. In addition
to these measurement settings, the Pulsar device includes an external trigger.
Selecting the Measurement Mode
To select the measurement mode:
1. Select Power or Energy from the Mode drop down list in the
Measurement Parameters Area. The pyroelectric screen fields displayed
depend on the mode selected.
depend on the mode selected.
Figure 6-1 Mode Drop Down List
StarLab User Guide
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