Natural Science Forum / Physics / Optics / August 2005

Hi group
i am looking for an old lasersystems Merlin or Magnum controller or a
Chamtech PM22 controller...
I would also be interested in defective units..

In a Ar/Kr 'white' laser:
Is the system pressure similar to that of Argon?
Is the electrical drive similar to that of Argon?
What is the Ar to Kr ratio?

I'm looking for help in putting together a single axis scanning device
that can create the appearance of up to 12 laser beams from a single
source, arranged in a "fan".
I've been researching "General Scanning" equipment, but so far have

http://cgi.ebay.com/Lumonics-High-Energy-Gas-Flow-Laser-Star-Wars-Very-Rare_W0QQ
itemZ7541478572QQcategoryZ53141QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
What is scary about this, the auction terms state "will ship worldwide"!

Just bought an old (1988) NEC GLG5730 HeNe laser and I am looking for the
specifications, particularly the rated output, supply voltage and current.
It's a 1m (39") long unit with a coaxial cathode chamber (similar to the
Siemens 7676 tube).

We have a beam expander (Keplerian type) made of two plano convex
lenses.
To find the optimum lens seperation for min rmsWFE (wavefront error),
in ZEMAX opticsCAD we place a Paraxial lens (i.e. a perfect lens)after

Can any body send me a  copy of the document :
"Designs and guidelines for constructing a mode-locked ti:sapphire
laser" ?
It's a very popular document about TS fs lasers written by KMLabs.

This looks interesting, and its not Chinese. The French tend to believe
in quality control. Pricing it for laser display means they want to get
the price down. Considering blue usually needs seriously good
temperature oven controls for the doubler,on the order of .01 C or

In the group alt.folklore.computers:
On Wed, 24 Aug 2005 22:47:01 GMT, Philip Nasadowski
<nasadowsk@nospam.usermail.com> wrote, in part:

I'm still in the process of getting my I-90MK to lase, I'm doing the
power supply for my final year Uni project so things are moving on, but
I'm desperately short on critical information about the tube.
Coherent have totally ignored me even when I got the university to send

Any information about this laser would be appreciated. All I know is
that it's a HeNe. What I'd like to know is approximate voltage required
to operate it and power output.
It's 10+3/4 inch in length and has a 6 mm aperture. The unit has a coax

I notice lots of 200mm parabolas of reasonable accuracy in my local DIY store,
piled up as "5000000 candlepower light", for about $35(us).
Does anyone know of a source of the reflectors for reasonable money?
Say $7 or so?

Hi group..
I am getting to the point where i am ready to assemble my home build thin
disk based green laser, and was looking at the type of glue i want to use
for putting parts together...

I'm looking for a laser for an experiment I want to run... I don't
require a specific  wavelength, or a high power level, but what I do
require is
1. Very low divergence.

http://www.livescience.com/technology/050819_fastlight.html
"Scientists Mess with the Speed of Light"
Ok, so I'm reading this article and they're talking about
making light go faster than the speed of light in optical