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- Xref: sparky sci.electronics:21841 sci.physics:22019
- Path: sparky!uunet!mcrware!grayhawk.rent.com!iowegia!quest
- From: quest@iowegia.uucp (Steve J. Quest)
- Newsgroups: sci.electronics,sci.physics
- Subject: Re: Lasers/collimated light in RGB?
- Message-ID: <eBRowB5w165w@iowegia.uucp>
- Date: Fri, 01 Jan 93 00:46:01 CST
- References: <1992Dec29.181125.1036@cmkrnl.com>
- Distribution: world
- Organization: Iowegia Public Access Usenet/UUCP, Clive IA USA.
- Lines: 28
-
- jeh@cmkrnl.com writes:
-
- > In article <1992Dec29.195908.15003@radian.uucp>, jlange@radian.uucp (John Lan
- > > In nightclubs I have recently seen light effects which apparently
- > > use bright red, green, and blue lasers which are modulated with
- > > mirrors (I think) to do interesting things like project color
- > > images on a wall. The red could be a simple He-Ne laser, but what
- > > about the green and the blue?
- >
- > A Krypton ion laser with flat (non-wavelength-selective) optics produces very
- > nice red, yellow, green, and blue lines -- in proportions such that the beam
- > a fair approximation to white! (a laser emitting a white beam looks DAMNED
- > strange at first!) Run this through a prism and you have the four colors to
- > with independently. Most if not all of the "Laserium" laser light shows use
- > Krypton lasers.
-
- Jamie,
-
- Krypton lasers produce yellow, red (about 720nm, very
- pretty) and infrared. Argon lasers produce many bands of blue and
- green. Coherent produces a nice laser (ours produces 8000mw of
- white light- can burn your hand) the Purelight laser. It is an
- Ion laser- as is all gas plasma lasers................sq
-
- (there are argon, krypton and argon/krypton mix gas lasers. Of
- course the mix gas lasers are most expensive, ours was about 25
- thousand dollars new...)
-
-