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980P-100-BL 980nm Laser Pen, retail $13.30
Manufactured by (Unknown)
Last updated 05-16-15
Manufactured by (Unknown)
Last updated 05-16-15
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 measured power output of 86mW at a wavelength of ~980nm in the NIR (near-infrared). 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!
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 to watch it deplete more than areas that are not irradiated 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, and set the front section aside.
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.
Unable to measure current use due to how this laser was constructed.
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 Oympus Brio D100 Digital Camera 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 a wall at ~2 feet (~0.6096 meters); the camera in my UDI U12A R/C Camera Helicopter was used.
Beam terminus photograph on the active surface of a Pocket View-It® 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 of the 490nm line.
The NIR filter from the Lasever LSR473-ML-100 120mW 473nm DPSS Blue Laser was used here.
Spectrographic analysis of the 490nm line; spectrometer's response narrowed to a band between 475nm and 495nm to pinpoint emission, which is 490nm.
The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/47/980.txt
Spectrographic analysis of the active area of the Pocket View-It® 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
Multiple beam cross-sectional analyses would normally appear here, but the ProMetric System
that I use for that test was destroyed by lightning in late-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 NOTES:
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
PROS:
Unusual wavelength
Two laser lines (980nm primary, ~490nm secondary harmonic)
Uses batteries that are common & relatively inexpen$ive
NEUTRAL:
Beam is invisible to the eye -- though you most likely already knew that going in
CONS:
None that I've yet to discover
MANUFACTURER: Unknown
PRODUCT TYPE: Invisible (NIR) laser pen
LAMP TYPE: Directly-injected diode laser
No. OF LAMPS: 1
BEAM TYPE: Very narrow spot
REFLECTOR TYPE: N/A
SWITCH TYPE: Momentary pushbutton on/off on side of barrel
CASE MATERIAL: Metal
BEZEL: Metal; laser & lens recessed into a hosel for them
BATTERY: 2x AAA cells
CURRENT CONSUMPTION: Unknown/unable to measure
WATER-RESISTANT: Very light splatter-resistance at maximum
SUBMERSIBLE: No
ACCESSORIES: None
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
PRODUCT RATING:
Update 10-24-14: Added a photograph of the laser irradiating the active area of an anti-Stokes NIR detector card.
Update 10-25-14: Performed spectroscopy of fluorescence of the active area of an anti-Stokes NIR detector card when irradiated with this laser.
Update 10-28-14: Added a photograph of the laser irradiating a wall at ~2' using the camera built into my Air Hogs Hawk Eye Blue Sky R/C Airplane with Onboard Camera; also confirmed existence of 490nm line via spectroscopy.
Update 11-14-14: Added a beam terminus photograph taken with my Digigr8 DV182 Digital Still/Video Camera.
Update 11-23-14: Added a beam terminus photograph taken with my
Oympus Brio D100 Digital Camera.
Update 12-10-14: Added beam terminus photographs taken with the camera in my UDI U818A 2.4GHz 4-Ch. 6-Axis Gyro R/C Quadcopter w/ Camera and my Mini Car Keychain Camera / Video Recorder.
Update 12-28-14: Added a beam terminus photograph on a wall at ~2 feet (~0.6096 meters); using my Vivitar DVR 748HD Digital Still/Video Camera
Update 12-30-14: Added a photo of the beam terminus spot widened to help show beam details; this pic is in leiu of a beam cross-sectional analysis as the beam cross-sectional analyser was destroyed by a direct lightning strike in late-July 2013.
Update 05-16-15: Added a beam terminus photograph using the inbuilt camera in my UDI U12A R/C Camera Helicopter.
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