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Laser Nuisance

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Old 9th Sep 2010, 06:19
  #61 (permalink)  
 
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Tolka writes:

I wonder to what extent the average member of the public realises the danger caused by pointing l@sers at aircraft.
Obviously, they don't realize that it poses a great danger.

When should one be able to *safely* distract a pilot?

Obviously, never - and some times are worse than others based on the workload in the cockpit.


mike wsm asks about

18nS pulse at 1053nM of 180J,

written by nigel
~1000 nanometers puts it in the infrared; J = Joules = Watts for the sake of this argument, so, 180 watts; 18 nanoseconds is a really, really short pulse.

Hmm. Powerful. Invisible to the human eye in both wavelength and duration.

Target illumination?



RR
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Old 9th Sep 2010, 08:57
  #62 (permalink)  

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~1000 nanometers puts it in the infrared; J = Joules = Watts for the sake of this argument, so, 180 watts; 18 nanoseconds is a really, really short pulse.

Hmm. Powerful. Invisible to the human eye in both wavelength and duration.

Target illumination?
Parameters now changed slightly on website Metal Improvement | Laser Peening

Uses enormous. Besides strengthening also now used for forming. Technology from LLNL originally.
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Old 9th Sep 2010, 08:59
  #63 (permalink)  
 
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~1000 nanometers puts it in the infrared; J = Joules = Watts for the sake of this argument, so, 180 watts; 18 nanoseconds is a really, really short pulse.

Hmm. Powerful. Invisible to the human eye in both wavelength and duration.

Target illumination?
I'm guessing it is a yttrium aluminium laser of some description, maybe used for ablation of some type, spectroscopy maybe?

I've used similar lasers at just over 1000nm that can wallop out 1 GW cm−2 for 10 ns. Now that would bring a tear to your eye...
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Old 12th Sep 2010, 10:24
  #64 (permalink)  
mike-wsm
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Originally Posted by rottenray
J = Joules = Watts
Please see pm. Thanks.
 
Old 12th Sep 2010, 15:24
  #65 (permalink)  
 
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I guess rottenray means 1w = 1 joule/sec.

p.s. that was not OTTOMH
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