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25mW 780nm ADJUSTABLE FOCUS
DIODE LASER MODULE
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25mW 780nm Adjustable Focus Diode Laser Module, retail $8.00 (http://AixiZ.com...)
Manufactured by (Unknown)
Last updated 03-02-11

This is a diode laser module that has a power output of 25mW CW (continuous wave), and is advertised to have a peak wavelength of 780nm (the ones I got have a peak wavelength of 785.45nm as measured spectrographically; this is *WELL* within spec!).

It comes in a metal body, and the focus is easily adjustable without tools from a tightly focused pinpoint to a narrow-medium spot.

Size of product w/hand to show scale

SIZE

To power up this module:

Go set fire to the playpen* first.

* I guess I've been listening to the Worm Quartet song "Let's Break some Furniture" too much lately.

"...Throw the loveseat down the stairs, take an axe to all the chairs, soon we won't have nowhere to sit..."
"...We'll make that Lazy Boy go down with just a couple of whacks"..."let's see if that Scotchguard can protect it from an axe..."
"...They're threatening to go on Sally Jesse Raphael+, so she'll send me to boot camp where they'll beat me till I'm well..."
"...My parents have so much to learn about young growing boys, if you don't want your stuff trashed then buy me cooler toys..."
"...Now we've shredded every ottoman the counter's cut in three, the dining table's burning and the chairs are soaked with pee..."
"...My sister's futon stares at me I swear I heard it laugh, let's see if it still chuckles when it's {toliet word censored} cut in half..."
"...There's mommy's little table lined with rings perfume and pearls, let's cut it into little bits & force-feed it to squirrels..."
"...There's nothing left to break here so cummon let's go to Sears (and break some furniture, let's break some furniture)..."
"...Your little coffee table's now a little pile of sticks (let's break some furniture, let's break some furniture)..."
"...We're not making a statement no we're just a bunch of pricks (let's break some furniture, let's break some furniture)..."
"...That recliner may be on wheels but it can't get away (let's break some furniture, let's break some furniture)..."
"...I don't know what a credenza is let's break one anyway (let's break some furniture, let's break some furniture)..."
"...That ottoman, it looks so smug that I just gotta pound it (let's break some furniture, let's break some furniture)..."
"...Tell the security guy that it was like that when we found it (let's break some furniture, let's break some furniture)..."

Neither Worm Quartet nor myself advocate destroying furniture; that {vulgar term for feces} is expensive.

This is Worm Quartet...one guy (Reverend Shoebox) and three worms.

+If you didn't know, Sally Jesse Raphael had a TV talk show in the late 20th century; one of her recurring themes was "Sally's Boot Camp" where parents who were guests on the program could send their unruly teenaged children in order to get them to "straighten up & fly right". Sally was most recognisable by her red-framed eyeglasses.

Now I'm going off on a tangent here - let's see if I can put this choo-choo train back on the tracks...

Connect it to any source of 3.2 volts DC that can sink at least 0.25A (250mA).
Red wire is (+) positive, black wire is (-) negative.
If you wish to have an on/off switch, you'll have to procure it elsewhere and connect it between one of the power supply terminals and the laser's matching power supply wire.

This laser module has a focusable beam.
To change the focus, turn the black ring at the end of the bezel (the laser's "business-end") to achieve the desired beam width. If you unscrew it too far, it will fall off - and if you aren't paying attention, a spring could shoot out as well -- if this occurs unnoticed, the poor defenseless spring could later fall prey to the hungry, hungry vacuum cleaner. If it does shoot out (and you indeed notice this!), just place the spring back in the laser's barrel, and screw the lens assembly back on at least two full turns from the time it "catches".

This laser can use *ANY* source of DC power between 3.1 and 3.3 volts that can supply at least 75mA, so this section really isn't needed here.

Current usage measures 64.0mA when powering it from an Aixiz Diode Laser PSU.
This measurement was taken on my DMM's 400mA scale to help minimise shunt resistance error.

This is a laser, not a flashlight. So I won't do the smack test on it. I know you love to see me break things, but it "ain't" "gonna" happen today, folks.

So I won't throw it against the wall, stomp on it, try to drown it in the toylet bowl or the cistern, run over it, swing it against the concrete floor of a patio, use a small sledgehammer 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), 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 {In the episode "Les Saves the Day...Again", Paulie Preztail says "Hey, ever wonder why this park's called 'Mount Erupto' anyway?", then Franklin Fizzlybear says "I think its an old native term. Means 'very safe.'"}), send it to the Daystrom Institute for additional analysis, or inflict upon it punishments that flashlights may have inflicted upon them. So this section of the laser module's web page will seem ***SIGNIFICANTLY*** more bare than this section of the web page on a page about a flashlight that was born to be a flashlight and nothing but a flashlight.

Beam photograph on the test target at 12".
The orangish color does not actually exist; the beam spot appears a very dull, dim cherry red to the unaided eye.

Power output of the first one measures 25.1193mW on a
Sper Scientific Pocket Laser Power Meter # 840011.
For a laser sold as a 25mW unit, this is basically spot on!!!

Power output of the second unit measures...O O SPAGHETTI-O!!! 138.70µw (0.1387mW) on the same instrument. Better run it through the spectrometer again and see what's going on here!!!

Spectrographic analysis of this laser module (the first one of the replacements*).

Spectrographic analysis of this laser module (the first one of the replacements*); spectrometer's response narrowed to a range of 780nm to 790nm.
As you can see, this laser's peak output is at 785.45nm.

Spectrographic analysis of this laser module (the second one of the replacements*).

Spectrographic analysis of this laser module (the second one of the replacements*); spectrometer's response narrowed to a range of 780nm to 790nm.
As you can see, this laser's peak output is at 785.45nm -- same as the first!.

Spectrographic analysis of this laser module (the second one of the replacements*) AFTER it went to pot shortly after the last series of spectrographic analyses were performed on it.

Spectrographic analysis of the defective first laser.

Spectrographic plot

Spectrographic analysis of the defective first laser; spectrometer's response narrowed to a range between 670nm and 830nm.

USB2000 spectrometer graciously donated by P.L.

ProMetric analysis

Beam cross-sectional analysis (X-axis).

ProMetric analysis

Beam cross-sectional analysis (Y-axis).

Images made using the ProMetric System by Radiant Imaging.

TEST NOTES:
Test unit was purchased on Ebay on 02-17-11 (or "17 Feb 2011" or even "Feb 17 Twenty Double Sticks" if you prefer) and was received at 4:09pm PST on 02-19-11 (or "19 Feb 2011" or even "Feb 19 Twenty Double Sticks").

* The first unit was defective, so AixiZ sent another one (well, *TWO* actually!!!) posthaste, which were received at 4:08pm PST on 02-28-11 (or "28 Feb 2011" or even "Feb 28 Twenty Double Sticks").
Now THAT'S what I call customer service!!!

UPDATE: 03-31-11
I just want to reiterate that Aixiz is an *EXCELLENT* company; I just got a couple of bum lasers -- this can happen to even the best of companies, so I do not place any blame on Aixiz here..."not no way, not no how" as they say.

PROS:
Focusable from fine spot to narrow (directional) flood
Relatively low power consumption

CONS:
Failure may be an issue -- I've had two of these modules bite the big one...that's what nocked the most off their rating

Unknown

Diode laser module

Diode laser

Adjustable from pinpoint to narrow-medium spot

N/A

Metal & plastic

Metal; laser diode recessed inside

N/A

64.0mA at 3.20 volts

NO WAY HOZAY!!!

None

Unknown/not stated

25mW 780nm Adjustable Focus Diode Laser Module * http://AixiZ.com...

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