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PICList Thread
'Laser Diodes and Driver Circuits'
1998\10\16@123735 by Philip Starbuck

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Yoshi,

Someone sent me these sites with a LOT of good information on laser diofes, take
a look.

Useful information on laser diodes can be found at:

http://www.repairfaq.org/sam/laserdio.htm


A lot of different driver circuits with explanations:

http://www.repairfaq.org/sam/laserdps.htm


cheers,

Phil


"There are three principal ways to lose money.  Wine, women, and engineers.  Whi
le the first two are more pleasant the third is by far the more certain."
                                               -- Baron Rothschild
                                                       ca. 1860

1998\10\18@122052 by mats monier

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hello do you know what is used for laserjammers (speedcontrol)
-----Ursprungligt meddelande-----
FrŒn: Philip Starbuck <spam_OUTstarbuckTakeThisOuTspamEMPIRENET.COM>
Till: .....PICLISTKILLspamspam@spam@MITVMA.MIT.EDU <PICLISTspamKILLspamMITVMA.MIT.EDU>
Datum: den 16 oktober 1998 22:02
€mne: Laser Diodes and Driver Circuits


{Quote hidden}

1998\10\18@125459 by Peter L. Peres

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On Sun, 18 Oct 1998, mats monier wrote:

> hello do you know what is used for laserjammers (speedcontrol)

Small nukes will do fine. Maybe a chemical laser, but you have to wear
armor when using it ;) Drive carefully.

Peter

1998\10\19@105917 by Andy Kunz

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At 06:52 PM 10/18/98 +0000, you wrote:
>On Sun, 18 Oct 1998, mats monier wrote:
>
>> hello do you know what is used for laserjammers (speedcontrol)
>
>Small nukes will do fine. Maybe a chemical laser, but you have to wear
>armor when using it ;) Drive carefully.

The bright yellow foglist often sold for 4-wheel-drive vehicles do a
wonderful job of screwing up the light-based "radar" used by police.

Andy


==================================================================
Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA
==================================================================

1998\10\19@122007 by Peter L. Peres

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On Mon, 19 Oct 1998, Andy Kunz wrote:

> At 06:52 PM 10/18/98 +0000, you wrote:
> >On Sun, 18 Oct 1998, mats monier wrote:
> >
> >> hello do you know what is used for laserjammers (speedcontrol)
> >
> >Small nukes will do fine. Maybe a chemical laser, but you have to wear
> >armor when using it ;) Drive carefully.
>
> The bright yellow foglist often sold for 4-wheel-drive vehicles do a
> wonderful job of screwing up the light-based "radar" used by police.

What is a foglist ? Unless it's something that makes really bright fast
pulses in the IR domain it's useless.

Peter

1998\10\19@205013 by Mark Willis

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Peter L. Peres wrote:
>
> On Mon, 19 Oct 1998, Andy Kunz wrote:
>
> > At 06:52 PM 10/18/98 +0000, you wrote:
> > >On Sun, 18 Oct 1998, mats monier wrote:
> > >
> > >> hello do you know what is used for laserjammers (speedcontrol)
> > >
> > >Small nukes will do fine. Maybe a chemical laser, but you have to wear
> > >armor when using it ;) Drive carefully.
> >
> > The bright yellow foglist often sold for 4-wheel-drive vehicles do a
> > wonderful job of screwing up the light-based "radar" used by police.
>
> What is a foglist ? Unless it's something that makes really bright fast
> pulses in the IR domain it's useless.
>
> Peter

 Foglights, I think he meant;  If you had 'em sprung so they bounced up
& down a little (Rubber mounted, not directly bolted), maybe that'd do
it, maybe not - I don't know <G>  I am curious, though!

 One company does sell an IR diode array, that could be a nice PIC
project <G>

 How fast is fast?  How bright is bright?  <G>

 Mark

1998\10\20@031234 by
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> > The bright yellow foglist often sold for 4-wheel-drive vehicles do a
> > wonderful job of screwing up the light-based "radar" used by police.
>
> What is a foglist ? Unless it's something that makes really bright fast
> pulses in the IR domain it's useless.
>
> Peter
>
>
It's a bit like a PicList, but some of the questions are even less
clear.....

Mike Rigby-Jones
.....mrjonesKILLspamspam.....nortel.co.uk

1998\10\20@093756 by Andy Kunz

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>> The bright yellow foglist often sold for 4-wheel-drive vehicles do a
>> wonderful job of screwing up the light-based "radar" used by police.
>
>What is a foglist ? Unless it's something that makes really bright fast
>pulses in the IR domain it's useless.

My fingers didn't obey my mind.

Fog lights.  They are very common in the USA, especially in certain
"cowboy" mentality areas.

Andy

==================================================================
Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA
==================================================================

1998\10\21@114132 by Peter L. Peres

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On Mon, 19 Oct 1998, Mark Willis wrote:

>   How fast is fast?  How bright is bright?  <G>

Fast: depends on modulation system in the transmitter, should be faster
than 1 msec in any case. If they use a semiconductor IR laser, you lose.

Bright: About as bright as your average laser pointer's spot on the wall,
but in IR. So, very roughly, about 1 mW/25mm^2. I can quite see some nut
pasting his car full of IR leds just to check it out. If any1 on this list
does it, send me an email ;) I can see a big future in fiber woven mats
with SMT IR leds in the fabric ;) Could put some visible ones in too, to
show the trooper's it's just a beer ad. <g>

TIA,

Peter

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