Unless the medium that the light is passing through has a very high
non-linear susceptibility tensor, then you will not observe the effect.
I think the RP industry can rest assured it will not need to rely on
In any event, slowing the light down will not increase resolution.
Dr. Bill O'Neill
EPSRC Advanced Research Fellow - Laser Based Micro Engineering
Room 112, Ashton Building
Department of Engineering
University of Liverpool
Liverpool L69 3BX
> -----Original Message-----
> From: Monica & Glenn Whiteside <SiderWhite@worldnet.att.net>
> To: Rapid Prototype Mailing List <email@example.com>
> Date: 22 February 1999 00:48
> Subject: Slow speed light and possible RP laser control implications?
> >Just read a very interesting article where a group of physicists at
> >Institute for Science at Cambridge and Harvard University were able to
> >the speed of light to a leisurely 38 mph by shooting a laser through
> >extremely cold (-459.67 degrees below zero) sodium atoms (this high
> >group of atoms is called a Bose-Einstein condensate) which worked like
> >"optical molasses" to slow the light down. The lead researcher, a
> >physicist named Lene Vestergaard Hau, envisioned improved communications
> >technology, televison displays, even night-vision devices. The
> >believe it is possible to slow it 1,000 times further - to a crawl.
> >I'm wondering what the implications of this would be to the RP industry,
> >especialliy how it relates to the control of laser light used in
> >like stereolithography. Would this also enable a more precise and
> >control of UV and/or infrared energy? Especially for creating extremely
> >fine details? Speed up the laser for certain features and slow it down
> >others? Any further thoughts or ideas on this?
> >Best Regards,
> >Glenn Whiteside
> >For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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