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Actual laser power measurement. All you need to know laser power meter.

Actual laser power measurement. All you need to know laser power meter.

A lot of our present and potential customers are concerned about the laser power output… Why?


The answer is simple – because many manufacturers do not measure the actual power output of their lasers and intentionally overestimate the values and mislead their consumers.

Most Chinese lasers have low power than it is indicated in their manuals


What power can be measured and advertised?
– General power consumption of the whole device.
– Power consumption of the laser diode.
– Impulsive optical power output.
– Constant optical power output.

The general power consumption of the whole device and the laser diode has nothing to do with the power parameters of the product.
The impulsive optical power output cannot be easily measured since the impulsive power can last only for 10^-6 – 10^-9 sec. This requires sophisticated equipment and cannot be detected easily. That is why the max impulsive power output is taken “as is” from laser diode manufacturers.


Here we will talk about the constant optical power output.
We know that 100% of Chinese laser manufacturers on eBay, Aliexpress and DHgate advertise fake values of their power output.
That is why most of their lasers die in a week or so after using them…

Many suppliers keep on telling about 15 watt, 20 watt power output while the max their lasers have is about 3-5 watts at best.
Wrong data misleads buyers who expect that lasers from trusted suppliers and manufacturers do have the claimed power.

So what is to be done?

It is very important to use proper equipment to do laser power output measurements.
For example, ultra-high quality equipment made by Russian company “Lamet”. This equipment converts the light power into the electric power.
The highlight of this device is a big aperture that allows measuring the laser power output even without a focused beam.
Here we are showing the process of the power output measurement of 3.5 watt, 5.6 watt, 8 watt and 10 watt Endurance’s laser attachments.


The constant laser power is always lower than the peak laser power.
It’s the same as with a claimed car horsepower: it can be reached for a very short period of time (sometimes it can be reached only once).

What matters is the outside temperature, power supply, electronic components, and many other things, including individual characteristics of every single laser diode.

Unfortunately, the optical power output of individual laser diodes can vary greatly. Such electronic components as: LM, DC/DC, transistors, etc. can also have an effect on the whole schematics.

To get a clear result repeat measurements at least 20-30 times.


Starting from the 1-st of June 2018 Endurance will sell lasers only with the rated power output measured individually. We try to do our best to meet the demands of every sophisticated customer.


Actual laser power measurement. All you need to know laser power meter.Actual laser power measurement. All you need to know laser power meter.

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