Review: ~100mw 532nm labby w/ fan & TEC!

I bought this labby with intent to use it in projector. It was a very good deal as it cost me just ~60$! Because of fan and tec it's capable of 100% duty cycle. After few hours of usage it isn't even warm.


Laser was available in two versions - 12v and 5v. Both have same driver, only fan is different.


It was unbelivable for me to get tec cooled laser for that price. I decided to remove the fan and see what's inside.


I'm still not sure about this tec. I've never seen round-shaped one like this. Hovewer, when laser is turned on I can feel it warm. So maybe it's just a heater? Tec without thermal adhesive would be completly useless, but it's chinese module so who knows. :crackup:


There are 4 pairs of wires coming out of the laser: for LD (it looks like regular 5,6mm), fan, tec and temperature sensor.


Unfortunately, I don't have lpm so I can only guess it's power. I've measured LD's current around 700ma. The output beam is HUGE - 12mm, but after focusing it's capable of burning black tape, matches, popping baloons or smoking from cd case. At night you can even see the dot on clouds

As the beam is big it's very visible. Here are some beamshots:





And the dot at ~30m wall:

It's nice, guassian TEM00. I think those darker areas are caused by low quality optics.
The only thing I didn't like about it was it's divergence. Out of the box it was horrible but refocusing fixed it.

Video of it's burning capabilities:
Laser destroying stuff! - DPSS Class IIIb 100mw Green 532nm lab module - YouTube

Thanks for reading!

PS It's my first review, what do you guys think about it?

I suppose you should pull the tec back like you have it, turn it on and measure the temps of both sides, and just because their is no thermal grease or adhesive it don't mean the tec wont work, you can choose to not use grease on a cpu, it still works and still wont overheat unless you running some prime 95 or something. However for a tec to work the tec needs to be heatsinked and from you pics nothing is on the other side of the tec to take the heat away. I love them fat beams though, pretty for the price, would be perfect for my laser line infinity mirror computer case project. Just it looks like the hot side of the tec is just sitting there with no heatsink and thats like messed up TECs WASTE ENERGY by the way. say you have 4w of heat to move, you use a tec the tec move 4w but on the hot side the heatsink now has to remove say 7W because of the current wasted by the TEC is also adding to the heat.


but that beam looks sick, nice buy for 60$ and +1 good reveiw also the lens artifacts on your dot make it look like they used a flashlight lens the lines make it kinda look like TEM30 but its just artifacts from the lens I think

Kind of a useless place for a TEC, since any heat it takes away from the module will just be sinked back in by the support metal around the outside. Its surfaces also looks pretty irregular, I doubt it's actually doing anything at all besides wasting power.

The huge beam is a bit odd too, almost like it has a beam expander built in. However wide beams are favoured for laser shows as they have a lower power density.

Does the module have TTL or analog modulation?

Kind of a useless place for a TEC, since any heat it takes away from the module will just be sinked back in by the support metal around the outside. Its surfaces also looks pretty irregular, I doubt it's actually doing anything at all besides wasting power.

The huge beam is a bit odd too, almost like it has a beam expander built in. However wide beams are favoured for laser shows as they have a lower power density.

Does the module have TTL or analog modulation?

The review was decent, with nice photos, but you forgot two critical details: the product name/model and where you got it. Otherwise it's like making a review of some random pencil on my desk, leaving the reader to wonder where to get one, and what the brand/model is.

Things said:

Does the module have TTL or analog modulation?

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It's TTL modulated.

Bionic-Badger said:

The review was decent, with nice photos, but you forgot two critical details: the product name/model and where you got it. Otherwise it's like making a review of some random pencil on my desk, leaving the reader to wonder where to get one, and what the brand/model is.

Click to expand...

I didn't write about it because I don't reallty know. It might be made by Shenzhen Optlaser Technologies hovewer pics on their site are a bit different so I'm not sure. They call it g50c but seller had few versions of it. I bought it from middleman on ebay-like site.

did you buy from a seller named avatar-laser? e-bay like? whats the sight? this is what it looks like if you say its 100mw http://www.ebay.com/itm/Fat-Beam-10...ltDomain_0&hash=item1c1dc1dd0e#ht_2259wt_1161

TheReddish said:

did you buy from a seller named avatar-laser? e-bay like? whats the sight? this is what it looks like if you say its 100mw Fat Beam 100mw Green Laser Diode Module TTL Stage Lighting Show Club | eBay

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I bought it from 0th3r at allegro.pl. This site is like ebay, but there are only polish sellers. The laser you linked looks the same as mine.

Wytry said:

I bought it from 0th3r at allegro.pl. This site is like ebay, but there are only polish sellers. The laser you linked looks the same as mine.

Click to expand...

knock off or not you got a nice great price for that enjoy