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30mW GREEN LASER MODULE (2)

5mW Green Laser Module (2), retail $97.00 (www.microfiber-products-online.com...)
Manufactured by (Unknown)
Last updated 11-06-09

(In reference to the box I received in the mail at 4:37pm PST on 11-04-09):
{sung like the Foreigner song "Feels Like the First Time"}

This is a green DPSS (diode pumped solid state) laser module. It comes in what I believe is a brass body sporting a handsome black finish with gold trim.

It produces its green laser beam with a pair of AAA cells.

SIZE

Feed the laser module the two included AAA cells (see below), and then you'll be ready to rock.

To use the laser module, just aim it at something you wish to point out, and press & hold down the button on the barrel for as long as you need the laser spot. Release the button to turn the laser module back off. Yes, it really is as easy as that.

To change the batteries in this laser, unscrew the tailcap, and set it aside.

Tip the used AAA cells out of the barrel and into your hand, and dispose of, recycle, or recharge them as you see fit. Do not under any circumstances flush them down a toilet or throw them into a trout-filled stream.

Insert two new AAA cells into the barrel, flat-end (-) negative first. This is the opposite of how batteries are installed in most flashlights, so please pay attention to polarity here.

Screw the tailcap back on, and be done with it.

Current usage measures 272mA on my DMM's 4A scale.

This is a laser module, not a flashlight. So I won't try to drown it in the toliet tank, bash it against a steel rod or against the concrete floor of a patio, let my mother's big dog's ghost or my sister's kitty cats spring a leak (uranate) on it, run over it with a 450lb Celebrity motorised wheelchair, stomp on it, use a medium or large ball peen hammer in order to bash it open to check it for candiosity, fire it from the cannoñata, drop it down the top of Mt. Erupto (I guess I've been watching the TV program "Viva Piñata" too much again

- candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piñata Central {aka. "Party Central"}), with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; the cannoñata (also located at Piñata Central) is only used to shoot piñatas to piñata parties away from picturesque Piñata Island, and Mt. Erupto is an active volcano on Piñata Island), send it to the Daystrom Institute for additional analysis, or perform other indecencies on it that a flashlight might have to have performed on it. So this section of the web page will be ***SIGNIFICANTLY*** more bare than this section of the web page on a page about a flashlight.

Green diode lasers are a lot different than those common red lasers you see all the time.

In a 640nm red laser module, there's a red-emitting diode and a lens to collimate (focus) the beam.

In a 532nm green laser (pointer or larger size), there's a BIG infrared laser diode that generates laser light at 808nm, this is fired into a crystal containing the rare-earth element "neodymium". This crystal takes the 808nm infrared light and lases at 1064nm (yes, deeper in the infrared!). This 1064nm laser light comes out of the NdYV04 (neodymium yttrium vanadium oxide) crystal and is then shot into a second crystal (containing potassium, titanium, & phosphorus, usually called KTP) that doubles the frequency to 532nm - the bright green color you see. This light is then collimated (focused) by a lens and emerges out the laser's "business end". Just before the lens, there's a filter that removes any stray IR (infrared) radiation from the pump diode and the neodymium crystal. You don't want that stuff in your green beam, trust me. :-)

This is why green diode lasers are so much more expensive than red ones. Lots of itty bitty parts, and they all need to be aligned by hand. If the polarisation is "off", one or both crystals need to be turned. With red diode lasers, you just slap in the diode and slap a lens in front of it.

This laser is lightly splatter-resistant, but it is not water-resistant, so please be extra careful when using it around sinks, tubs, toliets, fishtanks, pet water bowls, or other places where water or water-like liquids might be found. And you'll probably want to cover it up or otherwise get rid of it (such as by putting it in a pocket or bag) if you need to carry it in rainy or snowy weather.

This evaluation look an awful lot like the one I made for this product?
Thought you'd say so.
That's because they're functionally identical, so I was able to use its evaluation as a template for this one.

Beam photograph on the test target at 12".
Beam image bloomed *SUBSTANTIALLY*; beam spot is also not white.

Peak power measures 28.3050mW on a laser power meter designed for that purpose.
With the IR filter from this blue DPSS laser over the aperture, power output measures 23.7150mW.

Beam photograph at ~15'.
Beam spot is not white like this photograph makes it appear.
Beam spot is also somewhat smaller than it appears;
the beam image bloomed slightly when photographed.

Those colored graphics toward the left are my "Viva Piñata" posters, that clock on the right that looks like a gigantic wristwatch is my Infinity Optics Clock, and that sign that's so colorful and gay* to the right of that clock is my LED ''SIGNS'' Sign. You should also be able to rather easily see two of my SpongeBob SquarePants plush (Squidward Tentacles & Patrick Star) and a Digimon plush (Greymon)

Spectrographic plot

Spectrographic analysis of this laser.
Note the NIR laser line from the pump diode...ouch!!!

Same as above; spectrometer's response narrowed to a band between 800nm and 830nm to show NIR laser line from the pump diode.

Ocean Optics USB2000 Spectrometer graciously donated by P.L.

ProMetric analysis

Beam cross-sectional analysis.
Image made using the ProMetric System by Radiant Imaging.

TEST NOTES:
Test unit was sent by a website fan on 08-17-09 and was received at 4:37pm PST on 11-04-09.

Product was made in China.
A product's country of origin really does matter to some people, which is why I published it on this web page.

Sample is a loaner; therefore, the dreadful "

" icon will be appended next to its listings on this website when it is returned; denoting the fact that I no longer have the sample for comparisons or additional analyses.

* Gay = bright & lively, ***NOT*** homosexual.

UPDATE: 00-00-00

PROS:
Feels good in the hand; is also rather hefty.
No beam artifacts - none that I've been able to detect anyway.

CONS:
Not well-filtered for the NIR radiation from the pump laser diode (this is what nocked the most off its rating)
Not waterproof or submersible - but most modules/pointers aren't. Will not figure into my rating.
More delicate than directly-injected diode laser pointers/modules - but again, will not figure into my rating.

MANUFACTURER: Unknown
PRODUCT TYPE: Handheld laser
LAMP TYPE: DPSS laser diode
No. OF LAMPS: 1
BEAM TYPE: Very narrow spot
SWITCH TYPE: Momentary pushbutton on/off on barrel
CASE MATERIAL: Possibly a brass/aluminum alloy
BEZEL: Metal; laser aperture recessed into a hosel for it
BATTERY: 2xAAA cells
CURRENT CONSUMPTION: 272mA
WATER RESISTANT: Splatter-resistant at maximum
SUBMERSIBLE: NO WAY HOZAY!!!
ACCESSORIES: Fiberboard presentation case, 2 AAA cells
WARRANTY: Unknown/not stated

PRODUCT RATING:

30mW Green Laser Module * www.microfiber-products-online.com...

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