http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/ Engadget Comments for Sonic 'laser' developed, makes quite an impression at 80s night http://www.engadget.com/media/feedlogo.gif http://www.engadget.com en-us Copyright 2012 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:14PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:18PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:18PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 5:01PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:18PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:20PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:25PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:26PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:29PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 5:08PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:36PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:37PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/]]>Jun 24th 2009 4:48PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:34PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 4:37PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 7:22PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/]]>Jun 24th 2009 4:46PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/
As i understand it, the maximum frequency at sea level is somewhere in the GHz range. It is possible to produce Terahertz sound, called "hypersound", but anything above 10^13Hz is impossible to transmit - even within a solid.

The vibrations in the semiconductor lattice are produced when electrons are introduced (these vibrations are the phonons), there is a chain reaction (more phonons release more electrons, etc) and after a while a beam of ultrasound comes out. Ultrasound is a wishy-washy definition, there is no specific frequency/wavelength, it is simply anything above human hearing (>20kHz).

Personally i have no idea how it works - in theory it would only produce a stable beam inside a solid/liquid, but i haven't read that much into it.

Currently the most powerful ultrasound devices (in common use) operate in the MHz region.]]>Jun 24th 2009 5:23PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Funny how that stuff can pass you by unnoticed and then you find it's used everywhere.
]]>Jun 24th 2009 9:51PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/
a short correction:
in : " when alternating layers of aluminum arsenide and gallium arsenide are exposed to an intense beam of light, photons are released" it should read "phonons are released".

Light consists of Photons, Sound of Phonons.

Just my two cents :)]]>Jun 24th 2009 4:57PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 5:00PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 8:11PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/
P.S. if this ends up being a double post, I blame Engadget. When I posted this time, the original still hadn't shown up.]]>Jun 25th 2009 6:26AMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://lmgtfy.com/?q=nottingham+university&l=1
You evidently missed one from your vast mental encyclopaedia.]]>Jun 25th 2009 7:40AMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 5:02PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 5:07PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 5:28PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 5:18PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 5:42PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 5:58PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/
What was I smoking...lol

]]>Jun 24th 2009 6:11PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/





wait, wrong site]]>Jun 24th 2009 6:19PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/ ]]>Jun 24th 2009 6:47PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 6:55PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 24th 2009 6:56PMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/
Eventually /what/ sound waves? You never mentioned any until that point.]]>Jun 25th 2009 7:42AMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 26th 2009 10:48AMhttp://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/http://www.engadget.com/2009/06/24/sonic-laser-developed-makes-quite-an-impression-at-80s-night/Jun 28th 2009 10:09PM