[Laser] Re: My first experiments

[Paul M0EME]

good luck, its good fun!!!!!!!!!!!!!


----- Original Message ----- 
From: "Tim Toast" <toasty256 at yahoo.com>
To: <Laser at mailman.qth.net>
Sent: Thursday, April 06, 2006 6:45 PM
Subject: [Laser] Re: My first experiments


> Xenon strobes are what i plan to be experimenting with
> this year sometime. From what i've read, the strong
> line in the infrared varies in strength depending on
> the energy density of the pulse. Higher energy pulses
> tend to have more blue + UV output and less red + IR
> than lower energy. Also since the pulses are generally
> narrow, it might help to lengthen them with some pulse
> shaping circuits - i think this would also strengthen
> the IR output lines.
> 
> 
> Paul M0EME wrote:
> "A plane going overhead sounded like a heart beat
> because of the flashing landing lights. All in all I
> am happy with my first experiment."
> 
> 
> Yves wrote:
> "I did a test with F8DO with a  20 joules stroboscope
> flash for night club. F8DO could hear the beat at 40
> km  from my QRA from the clouds but only if the repeat
> rate was less than 5 pulse  each second. Above the
> signal seems disappear."
> 
> 
> J. Forster wrote:
> "Xenon strobes have a WHOPPING line in the near IR
> (somewhere around 900 nm as I remember). It is much
> easier to 'see' a Xenon strobe with a silicon photo
> diode than with the human eye because the spectral
> line is near the sweet spot for Silicon photo diodes."
> 
> 
> 
> 
> 
> Tim Toast
> http://www.aladal.net/toast/exp.html
> 
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam protection around 
> http://mail.yahoo.com 
> _______________________________________________
> Laser mailing list
> Laser at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/laser
> 
> 
> -- 
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.385 / Virus Database: 268.3.5/302 - Release Date: 05/04/2006
>