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Re: Possible cheap 2-line 980nm/490nm pen I don't have a TEC, but I'm willing to pop my laser in the freezer and see if the suspected 490 nm laser line increases in intensity (brightens) or shortens in wavelength.

Re: Possible cheap 2-line 980nm/490nm pen I just purchased one; when I receive it, I'll perform spectroscopy of it and see if I can detect the suspected 490nm laser line.

Sadly, mine is located in offsite storage; I do not have a vehicle or even a driver's license so I am not able to retrieve it at the moment. :(

Adjustable 1x AAA Green Beam Portable Laser, retail $6.09 Manufactured by: (Unknown) Last updated 04-15-14 The Adjustable 1x AAA Green Beam Portable Laser is a green-emitting, DPSS laser. It uses a a single AAA cell -- not two AAA cells like most other "pen-style" laser pointers and...

405nm Violet Portable Laser w/ Adjustable Focus + Charger, retail $20.00 Manufactured by: (Unknown) Last updated 04-14-14 The 405nm Violet Portable Laser w/ Adjustable Focus + Charger (hereinafter, just called a "violet portable laser") is a violet-emitting, directly-injected laser. That...

BTTT: Added a photograph showing that the unit still emits light when you think it's off; also performed spectroscopy of this weak emission.

My unit exhibits this queer behaviour as well; as shown by the following photograph: I'll be updating my review of it here on LPF with the photograph shortly (very probably tomorrow).

5mW 445nm-450nm Blue Laser Pen (2), retail $29.95 Manufactured by: (Unknown) for Lilly Electronics (www.lillyelectronics.com) Last updated 04-07-14 The 5mW 445nm-450nm Blue Laser Pen (2) (hereinafter, probably just called a "blue portable laser" or even just a "blue laser") is a royal...

I'm sorry; I simply read the value from the face of the instrument. :cryyy:

Heya there, I saw a listing on Ebay for this...I believe Lilly Electronics out of China is where the purchase stemmed from -- though I do not believe that Lilly is the actual manufacturer.

5mW 445nm-450nm Blue Laser Pen, retail $29.95 Manufactured by: (Unknown) Last updated 03-06-14 The 5mW 445nm-450nm Blue Laser Pen (hereinafter, probably just called a "blue portable laser" or even just a "blue laser") is a royal blue-emitting, directly-injected diode laser. That is, it...

BTTT: Performed spectrographic & power output analyses of this laser while it was operating below lasing threshold.

^^^ It may well be a Skylasers pen; however the tailcap interlock key may be throwing me off. :-O

Directly-Injected 5mW 515nm Green Laser Pen, retail $75.00 Manufactured by (Unknown) Last updated 04-10-14 This is a green-emitting diode laser in a pen-style body. But it's not DPSS (Diode-Pumped Solid State) like those now-common green laser pens -- no, this one uses a new technological...

Re: "5 mW" violet laser from eBay I also voted, "Fair". I've had my share of cheap Ebay violet laser pens, and would have much the same to report as you did. +1 :yh:

BTTT: Added two pics of the 2 Watt S3 Spyder Arctic G2 445nm Blue Laser w/SmartSwitch™'s beam terminus spot both WITH and WITHOUT the beam expander in place.

BTTT: Added two pics of the 2 Watt S3 Spyder Arctic G2 445nm Blue Laser w/SmartSwitch™'s beam itself WITH the beam expander in place.

Your homebrew ruby laser is just flat-out awesome!!! :-)

BTTT: Performed intensity measurements using my 2 Watt S3 Spyder Arctic G2 445nm Blue Laser w/SmartSwitch™ (Po= 2,500+mW) and added a new beam terminus photograph.

Spectrographic analysis of the CFL bulb in the small table lamp on the other side of the kitchen table. The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/44/cfl11.txt