Sper 840011 opinions/tests at lower power

[xStatiCa]

Has anyone tested this meter when measuring low power lasers like 1mw to 10mw?

I have been trying to find video of someone using one of these in practice but have come up empty. I am very curious how stable the reading is when measuring 1mw to 5mw lasers.

If anyone has one of these could you do me a BIG favor and get a video of testing some very low power lasers?

If using a green laser I assume the IR that gets through the laser will throw off the readings. Since this meter requires a conversion chart, if it gets green and IR at the same time the conversion will not work. So to read green I would need to find some kind of IR filter to block as near to 100% of the IR light as possible.

This is where I found the meter for a decent price:
Sper Scientific Laser Power Meter | AixiZ OEM Electronics

EDIT: I am aware of laserbee and kenometer. This thread is specifically looking for input about the Sper meter .

 

[randomlugia]

I would get a Laserbee at the same price, those have proven to be really great.

 

[Greenmechanic]

I would suggest buying a meter here from Jerry (Laserbee ) or Ken (Kenometer)
That meter only measures up to 40 mW and like you stated you will need to convert the reading for diff. wavelengths.
The two I mentioned measure up to much higher powers using a Thermopile detector.(no converting for diff. wavelengths)
A lot of people say "I don't need to measure any higher then XX, but as you get more and more into lasers, you find you will need the higher capability.
Also you will have instant access to information about your meter by simply PM'ing Jerry or Ken.
Do a search for both meters then decide which one suits your needs best. They both are very, very good meters with a cost close to the one you linked to.

 

[xStatiCa]

Thanks for the input guys but I have already been over that route. Lasersbee actually recommended the Sper for very low power ranges (1mw for example). My requirements for these measurements are below 40mw so the 40mw top end is not an issue. If i need higher power readings I will get a power meter for those ranges. The higher power meters seem to not be accurate for the 1mw range so I really need 2 meters to cover all ranges.

What I am really looking for is input from someone that has one of these Sper meters to see how stable they are at the low end range.

 

[lasersbee]

Like I've stated before... we had a Sper LPM in our shop for 6 months...
It worked as it was advertised... If your laser has stable output... then the
the Sper would show a stable out out reading that you then needed to
multiply by the optical correction factors supplied... Just like our HLPM II..

But if you need to accurately measure under 1mW as you previously stated
were your needs in other threads then the Sper is what you want...


Jerry

 

[xStatiCa]

I actually already have a Kenometer PRO on pre-order. Kenom did some tests in a video that indicated it was accurate within 1mw at the low end which should be good enough for now and give me room to expand just in case I get into higher power lasers again.

Ideally I would like 0.1mw accuracy for the lower power lasers though when I can afford another meter. I would want to get a Sper (or an HLPM II if it has more detail in the low power range than the Kenometer and Laserbee). I realize I am asking the person selling the HLPM II but... How did the HLPM II compare to the Sper? I would hope for $200 more it would have some kind of correction stuff built into it or is that $200 mainly for the slim case ?

I am sure you are busy just like Kenom but any chance you could show a video of the HLPM II with 1mw to 5mw lasers? If it seems pretty stable and more detailed than the bigger meters then I might pick one up sooner instead of waiting to save up for a Sper meter. The HLPM II has the benefit of measuring up to 200mw of course. If you get some spare time I would really appreciate it. I understand if you don't though or you just don't care to do so .

The kenometer PRO is much easier though without needing any calculations so I would end up using that most of the time unless I really wanted to see more detail at the lower end.