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LZGN-808-500 808nm 500mW FOCUSABLE INFRARED LASER
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LZGN-808-500 808nm 500mW Focusable Infrared Laser, retail $89.99 (http://lazerer.com...)
Manufactured by: Lazerer (http://lazerer.com)
Last updated 09-22-13

(In reference to the small box I received from Lazerer.com at 1:43pm PDT on 07-16-11):
{sung like the Foreigner song "Feels Like the First Time"}

The LZGN-808-500 808nm 500mW Focusable Infrared Laser (hereinafter, probably just called a "NIR portable laser" or even just a "laser") is a NIR (Near-Infrared), directly-injected diode laser. That is, it produces NIR laser radiation directly, without the need for messy, fragile nonlinear crystals like those green laser pointers and the amberish-yellow and slightly greenish-blue ones as well.

It uses a single 16340 Li:ION (lithium ion) rechargeable cell -- you just charge it back up when it peters out...never have to run to the store for batteries.

It is advertised to output 500mW of laser radiation at 808nm.

This is the reason I call it a "portable laser" on this website instead of a "pointer". Lasers designated as "pointers" must -- by US law anyway -- have a power output that does not exceed 5mW.

You must have the appropriate laser safety eyewear and *USE IT* every time you fire up this studly little laser...you don't want to end up like this guy: --->

This may look funny, but I assure you folks, this is no joke!!!
You can't just bop on down to your local Seven-Eleven, Quick-E-Mart, AM/PM, or other similar convenience store for some "Eyeballs-In-a-Can" when you ruin the ones you have. In a few hundred years perhaps, but not now (2011).

It comes in a handsome aluminum body with a matte black finish.

SIZE

To get the laser to turn on, first be certain that the furnished 16340 Li:ION cell is charged and installed. If it isn't, then charge and install it (see directly below), and THEN you can go set fire to the dead wingless legless fly you found in your box of raisins*...er...uh...go do some "scientifical" experiment.

Aim the laser well-away from your face first.

Take one of the two furnished interlock keys and push it into the keyway on the laser's tailcap. Turn it approx. ¼ turn clockwise (as though tightening it), then you can either leave it in place or remove it by pulling it straight out.

On the wide part of the barrel, you'll see a "sheath" with a circular opening in it -- this is the second (mechanical) interlock. Rotate this sheath until the switch button is visible.
Press & hold this switch down for as long as you require the NIR laser radiation; release it to neutralise the laser (e.g. "turn it off").

When you are finished using this laser, turn the sheath so that the button is covered, turn the interlock key approx. ¼ turn counterclockwise (as though loosening it) and then remove the key -- this prevents unauthorised activation by those who might just find the laser "lying around" and subsequently protects the person (and his or her eyes of course).

The focus is easily adjustable from just a few millimeters from the exit aperture to infinity by simply rotating the bezel (head). Unlike some other focusable lasers, doing this does not leave the head feeling "wobbly" or loose.

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

The song "Find The Dead Wingless Legless Fly In Your Box Of Raisins" is from the album "Faster than a Speeding Mullet".

To change/charge the battery in your NIR laser, unscrew and remove the tailcap, throw it in the {vulgar term for feces}bowl, yank that silver handle on the cistern down, and flush it away...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.

Tip the used cell out of the barrel and into your hand, and recharge it.

Insert a newly-charged RCR123 rechargable Li:ION cell or a CR123A lithium primary (disposable) cell into the barrel, orienting it so that its flat-end (-) negative goes in 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.
Aren't you glad you didn't flush away that tailcap now?

To charge the RCR123 cell, place it in the charger, orienting it so that its nipple-end (+) positive faces the top of the charger.

Plug the charger into any standard (in the United States) two- or three-slot 110 volts to 130 volts AC 60Hz receptacle.

A red light on the charger should now come on; this indicates charging is in progress. When the RCR2 cells have reached full charge, the light on the charger will turn from red to green.

At this point, unplug the charger, remove the charged cell from the charging cradle, and install it in the laser as directed above.

Current usage measures 681mA (rechargeable 16340 cell) and 677mA (disposable CR123A cell) on my DMM's 4A scale.

This is a self-contained laser , and not a flashlight meant to be carried around, thrashed, trashed, and abused - so I won't try to drown it in the toliet tank, bash it against a steel rod or against a concrete porch, let my mother's big dog's ghost or my sister's kitty cats piddle (uranate) on it, run over it with a 450lb Celebrity motorised wheelchair, stomp on it, use a small or medium 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.

***EXTREMELY IMPORTANT!!!***
This laser has a very large amount of {vulgar slang term for male nads} to it (measured at up to 620mW!!!) and the beam is nearly invisible to the unaided eye, so you ***DEFINITELY*** do not want to shine it into your eyes, other people's eyes, pets' eyes, for that matter, the eyes of any person or animal you encounter.

Eye damage can occur faster than the blink reflex can protect them, regardless of what species' eyes you irradiate with this laser. So just don't do it.

And para los motivos de Cristo (and for heaven sakes and for Pete sakes and for your sakes too) do not shine this laser at any vehicle, whether ground-based like a motorcycle, car, or truck, or air-based like a helicopter, airplane, or jet.

The suggested duty cycle is ~33% -- 1 minute on and 2 minutes off for cooling.

The biggest downside to this laser is the fact that while this is clearly a CDRH Class IV laser (making it quite dangerous!!!), there are only limited safety features (it has a keyed safety interlock on the tailcap and a mechanical switch cover); however there is no "emissions" indicator, no startup delay, and no mechanical beam shutter.

This laser is ***EXTREMELY*** visible with the EyeClops Night-Vision Goggles; it actually overloads the imager even when the laser's collimating ass'y is removed and the uncollimated laser beam is directed at a surface ~15 feet away.

Beam terminus photograph of this unique laser (collimating lens ass'y in place) on the target at 12".

Beam terminus photograph of this unique laser (collimating lens ass'y removed) on the target.
Laser was held just a couple of inches from the target so that the camera could resolve ("see") the NIR laser radiation.

Beam terminus photograph on a ceiling at ~5'.

Beam terminus photograph on a wall at ~10'.

Beam terminus photograph (collimating lens in place) on the reactive part of a Pocket View-It® IR Detector Card

Beam terminus photograph (collimating lens removed) on the reactive part of a Pocket View-It® IR Detector Card

Power output measurement

Power output with collimating lens in place (16340 secondary {rechargeable} cell): 557mW.

Power output measurement

Power output with collimating lens removed (16340 secondary {rechargeable} cell): 620mW.

The power output certificate that was furnished with this laser.
You can order one with your laser for a modest cost ($2.00) if you wish.

Power output measurement

Power output with collimating lens in place (CR123A primary {disposable} cell): 531mW.

Power output measurement

Power output with collimating lens removed (CR123A primary {disposable} cell): 594mW.

Power output measurement

Power output after intentional ignorance of the duty cycle recommendation to check for power loss: 602mW.

Power output measurement

Power output on a newly-charged cell: 619mW.

All measurements were made using my new LaserBee 2.5W USB Laser Power Meter w/Thermopile.

Operated until the 16340 cell pooped out.
Laser temperature was measured at 91°F (32.8°C) at 970 seconds into test.
Total runtime (to 50% power output): 1090 seconds (18.17 minutes).

I ran another analysis to be certain that the state of battery charge was 100%.
Operated until the freshly-charged 16340 cell pooped out.
I'll have to procure another 16340 (RCR123) cell and re-run this test.
Total runtime (to 50% power output): 777 seconds (12.95 minutes).

This analysis was run using a disposable CR123A cell.
Laser temperature was measured at 89°F (31.7°C) at 2,000 and again at 3,000 seconds into the test.
Total runtime (to 50% power output): 6,240 seconds (104 minutes).

This analysis was run using a rechargeable 16340 (aka. a RCR123) cell that was provided with my Arc6 Flashlight and charged using the furnished charger.
Total runtime (to 50% power output): 2,945 seconds (~49 minutes).

Post-test spectroscopy to check for wavelength following the "testicles to the hard vertical surface" ("balls to the wall") test -- which was indeed found -- but it drifted longer this time.

Spectrometer's response narrowed to a band between 800nm and 820nm to pinpoint wavelength, which is 809.022nm and the spectral line halfwidth appears to be exactly 2.00nm.

Case temperature (laser temperature) was measured with a CEM DT-8810 Noncontact IR Thermometer.

Spectrographic analysis of the laser diode in this product.
Wavelength appears to be ~808nm, which is ***WELL*** within specification for the type of laser diode used in this laser.

Same as above; but spectrometer's response narrowed to a band between 800nm and 820nm.
This shows that the wavelength is in fact 807.95nm and the spectral line halfwidth is ~3.80nm.

Spectrographic analysis of this laser after inadvertant ignorance of the duty cycle recommendation to check for wavelength drift -- which was indeed found.

Spectrometer's response narrowed to a band between 800nm and 820nm.

This shows that the wavelength has lengthened to 810.30nm and the spectral line halfwidth is ~3.60nm (whereas these values were 807.95nm and ~3.80nm when new).

Spectrographic analysis of this laser after intentional ignorance of the duty cycle recommendation to check for wavelength drift -- which was indeed found -- but it drifted shorter this time.

Spectrometer's response narrowed to a band between 800nm and 820nm.

Same as above; spectrometer's response narrowed to a band between 806nm and 812nm.

This now shows that the wavelength has shortened to 808.480nm and the spectral line halfwidth is ~2.960nm (whereas these values were 810.30nm and the spectral line halfwidth was ~3.60nm when last measured).

Spectrographic analysis of this laser just above lasing threshold.
Spectrometer's response narrowed to a band between 806nm and 812nm.

Spectrographic analysis of this laser well below lasing threshold.
Spectrometer's response restricted to a band between 760nm and 840nm.

Spectrographic analysis of this laser; newest (01-13-13) spectrometer software settings used. Spectrometer's response narrowed to a band between 805nm and 810nm to pinpoint wavelength, which is 806.040nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/43/ir-500.txt

USB2000 Spectrometer graciously donated by P.L.

ProMetric analysis

Beam cross-sectional analysis with beam widened (collimating lens removed; fast {X} axis).

ProMetric analysis

Beam cross-sectional analysis with beam widened (collimating lens removed; slow {Y} axis).

Images made using the ProMetric System by Radiant Imaging.

Power output stability analysis, 180 seconds (3 minutes).
(This exceeds the recommended 1 minute max. "ON" time, but this chart was made *BEFORE* I had the recommended duty cycle information at my disposal!)

Image made using the LaserBee 2.5W USB Laser Power Meter w/Thermopile's logging software.
I strongly suspect that a measurable degree of wavelength shift has occurred due to this laser's "ON" period for this analysis being 3x the recommended "ON" time; I'll check that spectrographically today.

Video on YourTube showing this laser burning through some black electrical tape.

That music you hear is the song "Crash" by...o give me a break -- you've ***GOT*** to know this one by now...

If you guessed Hozay Feliiano ¡¡¡PARA LOS MOTIVOS NO DE CIELO!!!
It's Anthrax you silly goose!!! :-O

This video is approximately 2.57114763487 megabytes (2,763,301 bytes) in length; dial-up users please be aware.
It will take no less than twelve minutes to load at 48.0Kbps.

Video on YouTube of this laser causing a balloon to "destruct".

The only sound you should hear is the explosive decompression of a balloon.

This video is approximately 1.23637923451 megabytes (1,429,951 bytes) in length; dial-up users please be aware.
It will take no less than six minutes to load at 48.0Kbps.

TEST NOTES:
Test unit was sent by LAZERER.com on 07-06-11 (or "06 Jul 2011" or even "Jul 06, Twenty Double Sticks" if you prefer) and was received at 1:43pm PDT on 07-16-11 (or "16 Jul 2011" or even "Jul 16, Twenty Double Sticks" if you prefer).

It actually came at 3:37pm PDT on July 15th, but I was not home to sign for the parcel so a "We Re-Deliver" notice was left in my incoming mail receptacle.

UPDATE: 00-00-00

PROS:
Powerful enough to burn, destroy, and leave wrink...O WAIT!!! WRONG INFOMERCIAL!!!

Beam spot is *SLIGHTLY* visible, and will register rather strongly on many digital cameras
Labelled (very close to) properly for both wavelength and approx. power output; however this laser is just into CDRH Class IV territory while it is labelled for the upper range of CDRH Class IIIb.

CONS:
Limited safety features (some, but not all) required on a CDRH ~~Class IIIb~~ Class IV laser in the United States (this is what nocked that last star off its rating!)

LAZERER

NIR (Near-Infrared)-emitting diode laser

Unknown-type high-power NIR (808nm) laser diode

Adjustable from very narrow spot to medium flood

Momentary pushbutton on/off on barrel

Aluminum

Metal; laser & lens recessed into its end

1x 16340 Li:ION rechargeable cell or 1x CR123A lithium disposable cell

677mA / 681mA

Very light splatter-resistance at maximum

¡¡¡PARA NO DE LOS MOTIVOS DE CRISTO!!!

2x interlock keys, hard-sided storage case, small lanyard

124mm L x 21.50mm D

Unknown/not equipped to weigh

China

30 days

LZGN-808-500 808nm 500mW Focusable Infrared Laser * http://lazerer.com...

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