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ArcticMyst Security by Avery

Grade this power output

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Aug 3, 2009
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Hello!

I am currently working on a review of a 200mW 532nm laser.

Showing you the following graph:

po.png


Only considering raw power output, would you feel satisfied with these readings? Do you think it's too unstable? Too long to stabilize? Exactly what you would expect from a 200mW 532nm? :) X-axis is elapsed time in seconds.

Looking for your opinion.

Mikael
 





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Have no idea as to how well it is heat sinked...:thinking:
Have no idea if it is TEC cooled....:thinking:
Have no idea if it is a Pen or Labbly... :thinking:

Pics of the Laser wouldn't hurt...

Check out the Reviews of green lasers in the Reviews section
of the Forum to compare...


Jerry
 
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Have no idea as to how well it is heat sinked...:thinking:
Have no idea if it is TEC cooled....:thinking:
Have no idea if it is a Pen or Labbly... :thinking:

Pics of the Laser wouldn't hurt...

Check out the Reviews of green lasers in the Reviews section
of the Forum to compare...

Wanted to save those part for the review itself.

I don't want to associate any presumptions of how and what it is until then. But since you ask, it's a bit bigger then a regular pen.

I just want a spontaneous reaction to the graph :)
 
D

Deleted member 8382

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depending on the temperature this could acceptable. Anyway, in normal conditions I would consider it OK unless it's an "expensive unit". Is this reading with IR filter? A 300mW sounds way too high!
 
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depending on the temperature this could acceptable. Anyway, in normal conditions I would consider it OK unless it's an "expensive unit". Is this reading with IR filter? A 300mW sounds way too high!

Thank you for the feedback :) What's worrysome for me is the long drop at between 100-150mW. But as it recovers / stabilizes I thought it might still be fair. However this is a well 3-4 minutes into the test. I would probably not duty cycle it that long in a regular run.

The readings are done without an IR filter. I suspect that these lasers are manufactured without an IR filter, but I have mailed the producer asking for this information.

Room temperature during measurement was 23.5 degrees C (74.3 F).

Price range is definitely not Optotronics / WL -range. But it's fairly higher than unknowing wholesale companies.

Mikael
 
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Your eally need to take readings with an IR filter. Without one these reading could be WAY off mark.
 
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Your eally need to take readings with an IR filter. Without one these reading could be WAY off mark.

Yep.

Got any recommendation? Saw someone recommending a bit bigger filter. However it was sold out before I got a chance to order one. :)
 

daguin

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If this is smaller than an RPL size and has no "active" cooling (i.e. TEC), then you are looking for WAY too much from the laser. You say that the X-axis is seconds. That means that you ran this for over 7 minutes?

The way smaller green lasers are "rated" is usually taking three, 30-second burns and averaging them together. Your graph shows the laser staying above 200mW for 50 seconds.

It is actually odd that your laser "stabilizes" after 4 minutes. Usually the hotter it gets (the longer it runs), the lower the output.

For a 200mW green, I would be ecstatic with this graph (if it's not all IR).

Peace,
dave
 
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If this is smaller than an RPL size and has no "active" cooling (i.e. TEC), then you are looking for WAY too much from the laser. You say that the X-axis is seconds. That means that you ran this for over 7 minutes?

The way smaller green lasers are "rated" is usually taking three, 30-second burns and averaging them together. Your graph shows the laser staying above 200mW for 50 seconds.

It is actually odd that your laser "stabilizes" after 4 minutes. Usually the hotter it gets (the longer it runs), the lower the output.

For a 200mW green, I would be ecstatic with this graph (if it's not all IR).

Thanks for the input! :)

The size is about 190x25mm. So it's definitely not a "pen". But it obviously doesn't fit a bigger cooling head like the RPLs. It has no active cooling.

Yep, ran it for a good 7 minutes. Checked it's heat on body regularly. I felt that it was not getting even half as hot as the DX pens after running full load at 5 minutes.

And yes, I definitely need an IR filter to determine the real output.

Only from eye judgment when it start and peaks at the 305mW I cannot look at the spot. It is simply too bright. Putting on protective glasses helps during tests :)

Comparing it to my measured 60mW IR-filtered pen it feels realistic that it was around 200mW when it was stable. However this is of course only eye observation.

Mikael
 
D

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this "just to bright to look" applies to a very wide range of powers, it doesn't mean nothing xd
 
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this "just to bright to look" applies to a very wide range of powers, it doesn't mean nothing xd

Course. Nothing concrete at least. :)

<less serious>
It could however be argued that with a regular ("normal") eye and at a defined wavelength sensitivity (532nm in this particular case) must get "too" bright at some point in the sense that it hurts looking at it :p
</less>

Either case. Anyone whom can recommend me a proper not too expensive IR filter for usage would help me out a bunch.

Mikael
 
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This thread really should have been made after you wrote your review. That way you could get much more focussed input to your particular laser. Not knowing anything about this laser other than your graph, wavelength, and dimensions makes it EXTREMELY hard for most to give you a good answer to your intial question.
 
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though it would not be near as accurate isnt it possible to do a power reading from farther away just to get a view of what the green power actually is since the IR is not focused???
 

ZRTMWA

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I would love to see a laser of this size perform the way it did on your graph. I would only use it like Dave said, for less than 30 seconds so this would be great.

NOW TELL US WHAT LASER IT IS!!!!
 
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Hehe.

Sorry for the delay. Been crazy here with renovations & work etc. But took some initial pics today and hoping to summarize a review for tonight GMT time. ;)
 




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