980P-100-BL 980nm LASER PEN

980P-100-BL 980nm Laser Pen, retail $13.30 ()
Manufactured by (Unknown)
Last updated 12-31-14

The 980P-100-BL 980nm Laser Pen (hereinafter, probably just called a, "laser pen" or simply a, "laser") is a rather unique product when it comes to portable lasers. It outputs a primary beam of laser radiation at a wavelength of ~980nm (near-infrared) at a measured power output of 86mW. 980nm is invisible to humans but is easily viewed with most digital cameras and night vision equipment.

However, what spurred this laser purchase is that it generates a very weak (est. ~80pW {picowatts} secondary emission at approx. 490nm in the cyan region of the spectrum!

 Size of product w/hand to show scale SIZE

To get the laser to turn on, first be certain that there are a pair of AAA cells installed. If there aren't, then install them (see directly below), and THEN you can go irradiate some glow powder or something.

Aim the laser well-away from your face first. Press & hold down the button on the barrel for as long as you want or need the rather invisible laser spot, and release pressure on the button to neutralise the laser.

To change the batteries in this NIR laser, unscrew the laser near the center, gently place the upper portion onto the floor in front of the stairs leading to the basement, and kick it down those stairs so that the piss ants with full bladders will think it's something to eat, find it unpalatable, drag it to the queen, who just sniffs at it, uranates all over it, and instructs the worker ants to do the same...
O WAIT!!! THAT'S THE GOOD PART!!! So just set it aside instead.

Tip the two used AAA cells out of the barrel and into your hand, and dispose of, recycle, or recharge them as you see fit.

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

Screw the front portion of the tube back on, and be done with it. Aren't you glad that you didn't kick that front piece into the basement with all of those hungry ants that really had to piddle now?

Unable to measure current use due to how this laser was constructed.

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 cannoņata, drop it down the top of Mt. Erupto (I guess I've been watching the TV program "Viva Piņata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piņata 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 cannoņata (also located at Piņata Central) is only used to shoot piņatas to piņata parties away from picturesque Piņata Island, and Mt. Erupto is an active volcano on Piņata 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.

This is a directly-injected laser though, who's active components are the inverter circuit, the laser diode, and the collimating lens. So it should withstand accidents better than a DPSS (diode pumped solid state) laser - the type of laser assembly found in yellow (593.5nm), green (532nm) and blue (473nm) laser pointers. These lasers have several additional components (crystals, filters, etc.) in the optical train, and you can knock them out of alignment by doing little more than looking at them the wrong way. And if any of these components are knocked out of whack, you'll no longer get your yellow, green, or blue laser beam.
Though you still do not want to intentionally drop your NIR-emitting laser because it's a precision optical instrument.

Power output tops out at 86mW on a LaserBee 2.5W USB Laser Power Meter w/Thermopile.

Beam terminus photograph on the test target at 12" (0.3048 meters).
It's that pinkish-purple spot.

Beam terminus photograph on a wall at ~8 feet (~2.4384 meters).

Beam terminus photograph on a wall at ~2 feet (~0.6096 meters); the Rechargeable Mini Keychain Video Recorder was used.

Beam terminus photograph on a wall at ~2 feet (~0.6096 meters); the camera in my UDI U13A R/C Camera Helicopter was used.

Beam terminus photograph on a wall at ~2 feet (~0.6096 meters); the camera in my Air Hogs Hawk Eye Blue Sky R/C Airplane with Onboard Camera was used.

Beam terminus photograph on a wall at ~2 feet (~0.6096 meters); my Digigr8 DV182 Digital Still/Video Camera was used.

Beam terminus photograph on a wall at ~2 feet (~0.6096 meters); my Olympus Brio D100 Digital Camera was used.

Beam terminus photograph on a wall at ~2 feet (~0.6096 meters); the camera in my UDI U818A 2.4GHz 4-Ch. 6-Axis Gyro R/C Quadcopter w/ Camera was used.

Beam terminus photograph on a wall at ~2 feet (~0.6096 meters); my Mini Car Keychain Camera / Video Recorder was used.

Beam terminus photograph on a wall at ~2 feet (~0.6096 meters); my Vivitar DVR 748HD Digital Still/Video Camera was used.

Beam terminus photograph on the active surface of a Pocket View-ItŪ IR Detector Card.
This photochemical detector uses anti-Stokes passive wavelength conversion to allow you to see NIR radiation.

Photograph "looking down the barrel" as it were to show a very low-powered (est. 80pW) laser line at ~490nm.

This weak emission is visible as a cyan (blue-green) dot on a white surface in a darkened area; it also has significantly higher divergence than the primary 980nm beam does. The beam terminus spot increases in size quite rapidly as the laser is moved away from the surface; the cyan dot apppears to double in diameter from the laser aperture being point blank to being pulled approx. 1 foot (0.3048 meters) distance.

Spectrographic analysis
Spectrographic analysis of the 490nm line.
The NIR filter from the Lasever LSR473-ML-100 120mW 473nm DPSS Blue Laser was used here.

Spectrographic analysis
Spectrographic analysis of the 490nm line; spectrometer's response narrowed to a band between 475nm and 495nm to pinpoint emission, which is 490.110nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/47/980.txt

Spectrographic analysis
Spectrographic analysis of the active area of the Pocket View-ItŪ NIR Detector Card when irradiated with this laser.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/47/viewit.txt

USB2000 Spectrometer graciously donated by P.L.

A beam cross-sectional analysis would normally appear here, but the ProMetric System
that I use for that test was destroyed by lightning in mid-July 2013.

In leiu of beam cross-sectional analyses, I present to you this photo taken with the aid of a diverging lens, that helps you to see its beam configuration.

Test unit was ordered on Ebay on 09-09-14 due to curiosity about this thread on laserpointerforums.com and was received on the afternoon of 09-17-14.

UPDATE: 00-00-00

Unusual wavelength
Two laser lines (980nm primary, ~490nm secondary harmonic)
Uses batteries that are common & relatively inexpen$ive

Beam is invisible to the eye -- though you most likely already knew that going in

None that I've yet to discover

    PRODUCT TYPE: Invisible (NIR) laser pen
    LAMP TYPE: Directly-injectged diode laser
    No. OF LAMPS: 1
    BEAM TYPE: Very narrow spot
    SWITCH TYPE: Momentary pushbutton on/off on side of barrel
    BEZEL: Metal; laser & lens recessed into a hosel for them
    BATTERY: 2x AAA cells
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER- AND URANATION-RESISTANT: Very light splatter-resistance at maximum
    SIZE: 157mm L x 13mm Dia.
    WEIGHT: 27.0g (0.950 oz.) incl. batteries
    COUNTRY OF MANUFACTURE: Unknown; though probably an Oriental country
    WARRANTY: Unknown/not stated


    Star Rating

980P-100-BL 980nm Laser Pen *

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