Easy Setup of Laser Power Meter and Sensor — Ophir Photonics

[Music]>>BRIAN PALMER: Hello, I’m Brian Palmer,
Calibration Manager here at Ophir Spiricon.>>RYAN WEEKES: And I’m Ryan Weekes, Assistant
Customer Service Manager at Ophir Spiricon. Today, we’re going to show you how to use
an Ophir power meter and censor.>>BRIAN PALMER: When we need to characterize
a laser, one of the first things we want to measure is the laser’s output power, and
if the laser’s pulsed, laser energy.>>RYAN WEEKES: At Ophir, we offer a wide
range of sensors, each type optimized for a different set of conditions, and also a wide range of meters, each offering
a different level of functionality. These sensor meter combinations are completely
plug-and-play; the identity and calibration for each sensor
is stored in its smart head connector, so the information moves with the sensor and
any sensor will work with any meter.>>BRIAN PALMER: When we want to measure laser
power, we usually use a thermal sensor for higher powers, or a photodiode sensor for
lower powers.>>RYAN WEEKES: In our first demo, we’re going
to show a PD300 photodiode sensor connected to a Vega meter. First, we assemble the base. Screw the post
into the sensor head and place the sensor so that the center is aligned to where the
expected beam will be. The meter is measuring ambient room light.>>BRIAN PALMER: The Vega has a large color
screen and the color scheme can be changed for maximum contrast with laser safety goggles. We also have some other meters for standalone
work or for connecting directly to your pc.>>RYAN WEEKES: All of these are plug-and-play
with our various sensors. Okay. Now we’re going to demonstrate measuring
a laser with one of our sensors, in this case, a thermal sensor. First of all let’s use proper safety equipment;
let’s put on our laser safety eyewear. Without being able to see the beam, unless
it’s on, we’ll have to align it by predicting where the beam should be.>>BRIAN PALMER: Now we plug the smart head
into the meter and turn on the meter. As you can see the power range is on auto. Let’s adjust to the proper laser wavelength. The laser we’re using is wavelength 532, so
let’s set the wavelength to less than 0.8. If you want to save your settings, simply
press SAVE. Next, we’ll have to zero the background
ambient readings so we will press the OFFSET button.>>RYAN WEEKES: Now we’re all set to measure. We have the right wavelength and the right
power range. Now turn on the laser on a low power and adjust
the beam to be centered on the aperture. Please note that you should be very careful
not to get the absorber surface contaminated because this will change the reading of the
sensor. It is not recommended to burn something to
see where you’re beam is since that can contaminate the absorber from the smoke. Now you can see how easy it is to start measuring
your laser with an Ophir power meter and sensor right out of the box.

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