1Watt 532nm Compact Laser Cube

[flecom]

you can get a 1W DHOM module on ebay for like $600

[swamidog]

i think you're off by about 400$

you can get a 1W DHOM module on ebay for like $600

[madmacmo]

I subsequently have found the following two articles so far that shed a bit more light on this curiously compact 532nm MgO:PPLN SHG laser module, albeit I am still coming up empty having not found any datasheet specs:

Posted Jan 18, 2012 - By Chang-Qing Xu, Yang Lu and Qing-Yang Xu
SPIE Newsroom. DOI: 10.1117/2.1201201.004037
A Green Laser for Display Projectors

We have developed the first green laser that combines high output power (>700mW), high efficiency (∼30%), and small size (∼4cm3).5 It has an extremely simple two-component structure, i.e., an 808nm pump laser diode and a newly developed ‘mGreen’ module (provided by CQ Laser Technologies). The mGreen module is composed of a 1% doped neodymium:yttrium orthovanadate (Nd:YVO4) crystal and a 5mol% magnesium oxide: periodically poled lithium niobate (MgO:PPLN) crystal that are aligned precisely with an air gap and mounted on a silicon substrate (see Figure 1) so that facets of the two are parallel.

A copper cover protects the packaging. The input facet of the Nd:YVO4 crystal is coated for high transmission at 808nm pump wavelength and high reflection at both 1064 and 532nm wavelengths. The output surface of the MgO:PPLN crystal has a high-reflection coating for 1064nm light and high transmission coating for 532nm light. This forms the laser cavity between the input facet of the Nd:YVO4 and the output surface of the MgO:PPLN crystals.

(a) mGreen Application Notes

Figure 2. Photographs of (a) the mGreen module and (b) the miniature green laser.
The mGreen is as small as 2mm (thickness) × 4.5mm (width) × 7mm (length): see Figure 2. A plano-parallel cavity reduces the total cavity length, and the whole laser has dimensions of only 11mm (height) × 22mm (width) × 18mm (length), which corresponds to a volume of 4.36cm3. It is worth noting that using a properly packaged 808nm laser diode can further reduce the size

Figure 3. Power of green laser versus current of 808nm LD.
The laser output power is also high (see Figure 3 for output power as a function of driving current). We could achieve a maximum power of 710mW, which corresponds to an optical-to-optical efficiency of 29.6%. The output beam is a clear round spot (see Figure 3, inset). With their excellent performance, easy assembly, and potentially very low cost, these green lasers can satisfy both the cost and performance requirements of portable laser projectors, unlike conventional green lasers based on KTP and LBO crystals.

In summary, we have designed and developed a new green laser for portable laser projectors, based on an extremely simple two-component structure that can be mass produced at very low cost. We are now working to further improve the performance of the laser, including conversion efficiency and brightness. We are also refining our design to reduce production costs.

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I hit a wall here, where at this point I am not so inclined to pay $34.95 to download a PDF copy of this seemingly related article:

Published - Laser Physics - Volume 22, Number 1 (2012), 100-105, DOI: 10.1134/S1054660X12010318
A compact and high efficiency diode pumped green laser based on MgO doped PPLN

Buy Online Access to this Article - USD $34.95
Article Cover Page

Received July 12, 2011; in final form, July 31, 2011; published online November 28, 2011

Abstract—In this work, an efficient intra-cavity second harmonic generation of green laser in a periodically poled MgO doped LiNbO3 (MgO:PPLN) bulk crystal using a compact Nd:YVO4 laser as a fundamental laser source is reported. Different length, different working temperature MgO:PPLN crystals are tested and investigated in the SHG experiments. The maximum output power at 532 nm is 6.2 W at the absorbed pump power at 808 nm of 14 W, the optical to optical conversion efficiencies from 808 to 532 nm and 1064 to 532nm are 43 and 77%, respectively, the instability in 2 hours is less than 5%.

Edit: This module appears to be distributed by C2C Link Corporation; however it is not listed on their Products Page (but their mGreen=1000 MgO:PPLN SHG is)

Edit: as of 1am CST - 4 now available and 1 sold to g***4 ( 379) Jun-01-12 19:03:48 PDT

Edit: My appologies krazer, as I did not see it earlier where you made mention of having ordered one. You are a brave soul indeed for taking such a calulated risk .

[flecom]

i think you're off by about 400$

http://www.ebay.com/itm/1000mw-532nm...item2a0d48f3a8

offer him $600

[n2stuff]

You still need a 4 watt 808nm diode to make it work. So what are the wires for a tec?

Quote: For example, when pumped with a 4W 808nm laser diode (with a fiber fast axis collimation) the output of 532nm green light of close to 1000 mW can be easily achieved

[madmacmo]

You still need a 4 watt 808nm diode to make it work.

FYI - Note an 808nm diode is an integral part of the module

It has an extremely simple two-component structure, i.e., an 808nm pump laser diode and a newly developed ‘mGreen’ module

So what are the wires for a tec?

The two wires shown exiting the hidden side of the module are at least two wires short of what is described if there is an integral TEC.

[dsli_jon]

You still need a 4 watt 808nm diode to make it work.

..Or *do* you?? That's where this little ad is such a 'kreepy kaper', because, - typically - when a manufacturer / distributor says:

"So what you need to do is just simply to add a power supply to the green laser" - that should mean, that is all you really have to do.. However, if, in fact, you are *really* powering an 808, (..with, an 'implied' TEC, ("Wall-plug-efficiency (not including TEC")) SHGing an 'mGreen' chip, well then that's a different animal, now isn't it?

And another bit o' mystery: Operating V of diode - 2V @ 4A? Umm.. I smell something kinda fishy..
..Lastly, as was well-noted, it's still 'two wires short of a full-TEC'... ..Hah! that would actually be a great 'laserist-insult'.. 'Man, you are two wires short of a full-TEC!'

..So, again - the ad / info is at war with itself, apparent 'seller-integrity' or not.. 'Kecked', we will be keenly waiting the results of your crash test dummy...


j

[n2stuff]

Also a beam shot would be nice with the setup in the photo And yes the specs are all aver the board.

[mixedgas]

I downloaded the paper...
Its on a hard drive here.

It will be TWO days before I can do a analysis...

Steve

[KGB]

http://www.ebay.com/itm/1000mw-532nm...item2a0d48f3a8

offer him $600

FYI...Winni at goldenstarlaser is selling CNI 1W with CNI PS for $~560 USD. I have 3, the last one I got came in at 1.75W, worst one was 1.5W