On Tue, 24 Jul 2001, Eugene Leitl wrote:
On Mon, 23 Jul 2001, Jim Choate wrote:
Maybe. But even mirrors can be burned through by a laser. And then we've
Jim, why are you trying so hard to make a complete fool out of yourself, in a public forum?
A chemical laser needs active optics to track your remote target. What do you think that optics is made from, unobtainium? Do you understand basic laws of optics? I recommend purchasing a 15 W laser (and a pair of matching protection goggles), and then use it to ignite a match from a close distance, and then over a few km, preferably during summer in your native Texas. You could target the beam towards a projection wall, and watch it with a pair of binoculars. It will be quite instructive.
Sure but take some dramamine first if you get motion sickness.
The optics used for focusing are NOT mirrors, they are (hopefully) transparent at the frequency under use. A mirror on the other hand is required to be OPAQUE with respect to transmission, we want full, 100%, reflectivity. That means that every photon that hits that mirror interacts, loses some energy, and gets re-emitted. ^^^^^^^^^^^^^^^^^
Are you implying that the wavelength for incident photons changes upon interaction with the mirror? The energy loss at the mirror is lost photons not altered wavelengths. The lost photons have varying fates. Mike
On Tue, 24 Jul 2001 mmotyka@lsil.com wrote:
Are you implying that the wavelength for incident photons changes upon interaction with the mirror?
The energy loss at the mirror is lost photons not altered wavelengths. The lost photons have varying fates.
The ones absorbed by the mirror are turned into low-frequency (ie heat) photons. There will always be a 'bell curve' effect. Most won't be effected, some small few will. As the beam intensity goes up so does the total number of 'interactions' betwix the mirror atoms and the beam photons going in and exciting them little babies. At some point they fall in a variety of cascades (again statistically determinable at least) which again convert that intially mono-tonic photon into a variety of poly-tonic ones. -- ____________________________________________________________________ Nature and Nature's laws lay hid in night: God said, "Let Tesla be", and all was light. B.A. Behrend The Armadillo Group ,::////;::-. James Choate Austin, Tx /:'///// ``::>/|/ ravage@ssz.com www.ssz.com .', |||| `/( e\ 512-451-7087 -====~~mm-'`-```-mm --'- --------------------------------------------------------------------
participants (2)
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Jim Choate
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mmotyka@lsil.com