Natural Science Forum / Physics / Optics / April 2008

Just updated!
http://akrobiz.com/laserboy/code/LaserBoy_04_30_2008.zip
Enjoy.
James.   :o)

Check it out everyone!
Please let me know if you find any bugs.
http://akrobiz.com/laserboy/code/LaserBoy_04_27_2008.zip
It will never really be done, but it has never been any doner!

Does anyone have an real Sapphire glass catalouge that I could use for
Code V? I'm have issues evaluating Sapphire at -55 degree C (it
refused to do so unless I give it dN/dT values which I can't find
anywhere).

I am trying to analyze optical spectrum which is captured by optical
spectrum analyzer (typical telecom analyzer form Yogokawa, Agilent,
etc).
Optical spectral shape that I took using the analyzer has some

To detect squeezed vacuum, I need to do homodyne detection.
For that, I have two   choices.
One is using Balanced photodiode, and the other is using two PD and
splitter/combiner.

I'm trying to do quantum squeezing experiment with IR diode laser
light.
Since it's my first time to do squeezing experiment,I need to know
where the shot

i have a 600w co2 laser ,  sheet metal cutting xy table that i am setting up
, whats the best way for aligning the beam path through the 45 deg mirrors
on the y axis and on down to the z axis  , and ultimately through the lens !
i have it somewhere near at the moment , but it ...

I sometimes have a use for aspheric lenses, numerical aperture 0.5 or
higher, with focal lengths of about 10-30 mm - to collimate or focus
arc lamp beams, LED beams, etc.  Edmund precision aspheres are good
but they cost about $200 each.  Geltech (Light Path Technologies)

I'm getting components together to see whether I can make a Michelson
interferometer.
I have a HeNe laser about 15 inches long, which has stable
polarization but I think is probably not frequency stable (Is there a

We put a lens on a big CCD chip and noticed a huge (2-to-1) drop off
in intensity near the edges, like dark vertical bands near the right
and left edges - not so much on the top and bottom edges.  Now if I
remember my terminilogy correctly "vignetting" happens when the

I'm a computer science student and I am doing a project where I need
to calculate the radar cross section of an 3D object.  I have to use
the ray tracing approach. So far I'm able to read the object from the
geometrical specifications given and store it in appropriate data

I am having a hard time understanding the meaning, of the PSF and the
convolution term in optic  .
I would be very glad if anyone can help.
- what is the meaning of PSF in optical system

I will come in New York in June, have you some hints of academic or
researc institutes regarding optics to make a tour ? I am an Italian
researcher involved in optics and optical testing
thank you

I am looking for a LED than can be driven buy pulse with width of
10ns~100ns order.
Such a LED is required for measurement of velocity of small particles
( size of some 10 microns order ) as light source. Commonly used light

I have a set of eye-magic EMS-3080's, can anybody recommend what PSU I
need for them and the best place to purchase it in the UK.  Thanks.