Natural Science Forum / Physics / Optics / October 2004

For nice explanations of several
intriguing issues in quantum mechanics  
(uncertainty, decoherence, entanglement, Schrödinger's cat,
the Einstein-Podolsky-Rosen paradox,

If i ask this question i run in conflict.
Proposals and a nice discussion expected !

Who can give me a reasonable expectation?
I am almost disappointed at optical fiber industry and i want to know
whether PLC is some hope.

I recently picked up a couple of surgical YAG lasers, and one of them has a
pair of intracavity optics that I can't identify.  The laser is a Trimedyne
1000, rated 90W CW.  Between the rod and the HR mirror, there is a mount
containing two optics with independent coarse ...

I have registered a domain name and now have a REAL web site.
http://www.skywise711.com
I just got it today (04-10-19) so it may take a couple of
days for the DNS entry to propogate the whole net. For me

Seperate post because I have appended my own question
Apropos Haisheng's question about laser identification, there are a group of
folks  - astronomers - who try to identify remote lasers (either stars, or
in one case, the Martian atmosphere)

We consider a glass system with tree glass plates (all having weak
neglectable absorption). All of these three
glass plates shall have an different refraction index, that means non of
these three indexes shall be equal.

Dear Coating Experts,
  In cases of deep curvature lenses, when we do coatings (for
example, AR coatings), we could see different colors due to
non-uniformity of coatings.

This may sound silly but is it possible to use more than one 808nM
diode to end pump a piece of vanadate? Would you effectively double
the cavity flux or would there be some kind of "interference" that
would cause problems  (assuming you can successfully get the light

Does anyone have a source of this information?  I am interested in the
use of acrylic and polycarbonate lenses at the eye safe laser wavelength
of 1.55-1.58 microns.  The material seems to have adequate transmittance
out to this wavelength.  I have found this information hard to ...

Is there a book that covers the processes, equipment, and techniques for
coating mirrors (sputtering)?
Thanks,
Bob

I need to calculate the light intensity after a corherent light
passing through the grating. The groove width of the grating is s with
the pitch of the grating is d. The grating is made of the material
which refractive index is n and the height is h. Considering the light

Is there a formula that I can use to calculate the spot size of a focused
laser beam?
I use a 10cm focal length lens to focus an 355nm wavelength laser beam that
has a diameter of 4mm and the focused spot size is still much bigger than 50

I found this product on Z-BOLT's homepage:
https://secure1.nexternal.com/shared/StoreFront/product_detail.asp?CS=jmm6360&Ro
wID=89&All=
It seems to be pairable with their BTG-2 Green Laser Pointer
(http://www.nexternal.com/jmm6360/?Target=products.asp&ProductID=52)

does any one happen to know what experiment Johannes Kepler did to
confirm the inverse square of light intensity law?