
Laser cut. As I searched for potassium titanyl phosphate and barium beta borate among aluminum filings
“Do you know what's inside the drum?” end of a sad joke
"Yes, even drown him in acid" shop laser pointers green-laser.ruRecently, I caught the blue
Having bursted the balls and lit the matches, I wanted more, so I decided

Attention, under a cat of a scene of abuse with gadgets



“All about Lasers” (April 7, 2011)
habrahabr.ru/post/117008
“Ghetto-style spectroscopy: Exploring the spectrum and (without) the danger of lasers” (November 4, 2013)
habrahabr.ru/post/200786
“Be careful with Chinese lasers” (July 27, 2013)
habrahabr.ru/post/187988
For familiarization
habrahabr.ru/post/144495
Not with Habr, but also worth reading:
Security FAQ: How to protect yourself when working with lasers
lasers.org.ru/2012/05/ 04 / safety-faq
Safety when working with lasers and what will happen if it is not observed
lasers.org.ru/2008/06/20/laser-safety-and-why-you-should-stick-to-it
“ Dead pixel” on the screen it is tolerable, but the “broken pixel” in the eye is not very. be careful.
Laser parsing

The laser consists of a rather massive case, a heap of radiators and a diode driver board. It feeds on 1 large or 2 small batteries (the charger is included)

Does this thing remind me of one bug from the Matrix?

Glasses

Glasses at first glance are flimsy and do not inspire confidence, but if they are put on, the laser beam is not visible at all.
My first hypothesis was that the laser perforates them instantly. There it was.
After two minutes of glowing with a laser perpendicular to the plane of the lens, its surface did not even heat up.
Saw in Russian
"Inside, no user serviceable parts" V. Vinge, "Rainbow's End"
"... the needle in the egg, egg in a duck, a duck in a hare, hare in the chest ..." tale
how foreign colleagues sawed a green laser
IR filter


view from the other side
KTP (KTiOPO 4 ) is a material with non-linear optical characteristics


Nd: YVO 4 crystal.
Yttrium Vanadate


Holder


Diode


Green Laser Scheme


IR filter


view from the other side
KTP (KTiOPO 4 ) is a material with non-linear optical characteristics


Nd: YVO 4 crystal.
Yttrium Vanadate


Holder


Diode


Green Laser Scheme

And what is blue inside?


Inspired by foreign experience, I boldly took up the saw.

Hands slightly crooked

Two halves of an aluminum radiator

copper radiator ( UPD as the written comments - brass)

Interestingly, when cutting aluminum radiator it becomes very hot (burned fingers), and copper remained cool, though I sawed intense

finished copper heatsink ( UPD as they wrote in the comments - from brass)

Oops, we arrived. I couldn’t even take a picture of this small detail that was at the end of the wires on my lens. And this
How to use such powerful pointers
(bright side):
As I found out, these lasers are often taken by hunters and fishermen in order to brush off tigers and bears, since the animals are also not very pleased to look at the blue ray. Plus, the beam is perfectly visible from a distance and helps out if you get lost. One comrade bought such a pointer and used it as a portable laser engraver to mark a working tool in production. Pointers are used by summer residents in the household, as a level, for example. There are several examples of using laser pointers for security systems and perimeter control.
dark side
Football fans help their team
Hooligans in Europe amused themselves by blinding pilots of take-off planes. Now a long time is "shining" for it.
Safety table for a 5 milliwatt pointer, what will happen if the laser power is 5 watts !?

Hooligans in Europe amused themselves by blinding pilots of take-off planes. Now a long time is "shining" for it.
Safety table for a 5 milliwatt pointer, what will happen if the laser power is 5 watts !?

Funny DIY projects using blue pointers.
Fallout Fans Harness
Acknowledgments
I express gratitude to the company green-laser.ru for providing a laser for
P.S.
Who knows what to do with what remains of the laser (for example, to saw it further), welcome to Hackspace.Only registered users can participate in the survey. Please come in.
Is it possible to disable a surveillance camera with such a pointer?
- 22.2% Yes 558
- 7.9% No 198
- 12.9% Don't know 325
- 56.8% It is necessary to conduct an experiment and write about it on Habré 1424