Natural Science Forum / Physics / Optics / February 2006

Hi to all,
I'd be very interested to know if someone has experience
with cleaning LBO crystals?
I was told to use amonium bifluorite ??? to do so.

Greetiings laser experts;
I am interested in seeing if I can get more 532 nm laser power out of
a module from a leadlight laser pointer.  Before I start vandalizing
the pointer guts, I've got some questions.

I took pictures using a Logitech webcam through a peephole in the door
but the quality was too bad. Features of no two faces were
distinguishable.
Can anybody give me a justifcation from optical science point of view

I apologise if this an old topic with nowhere to go, but has any work been
done
on the recycling of the gases in a continuous flow CO2 laser ?
I realise that there will be changes in the mix of CO2/He/N2 due to the eht

How the design of femtosecond laser laser? Can anyone point me how to
design this kind of laser using Ti:sapphire crystal?

I understand the role of a pinhole and its size in selectively imaging
a layer of a thick 3D specimen.  My question is, why not place an array
of finitely small pinholes in a plane at the focal length of the
objective lens rather than using having random or spiral arrangements

I got a optical breadboard (base plate, metric), I'm looking for surplus
mounts and stuff.  like for mounting lenses, cubes lasers, etc.  anyone
know a good place within north america?
Thanks.

hi,all
does anybody know how to change an air gapped fabry perot
interferometer in zemax?
coz mu is a function of Temperature and Pressure, it will affect the

I have now managed to post photos of the burn patterns, and of  the ends of
the Sharplan tube at www.fanmaker.co.uk/lasers.html .
It has been suggested that the problem could be either badly aligned optics,
or crud on them.

Hi, Would any one of you know the pinout of Russian Laser Diodes. I have a
defective Russian night vision laser illuminator and I would like to check
wether the laser diode itself or the circuit is bad. The problem is that
this laser has 4 pins and I really don't know where or ...

After having acquired a nice Newport 835 power meter, and an 818
detector from separate sources, it turned out that one needs to
exchange/reprogram an internal Prom in the meter if one wants to
connect a different sensor (yes, I should have known before, but

Is there knowledge in the group on recognizing of bacteria?
I have made a picture I have seen through a simple microscope and
would like to know which organism is seen.
tx,

Can anyone suggest a far eastern supplier of Custom beryllium optics?

Does anyone have an opinion on this?  I am looking for something inexpensive
to do home laser shows with computer controlled graphics and I saw it.  If
the link doesn't work, it is item # 7391939699 in Ebay.
Thank you,

I need to simulate an unusual design with Zemax software.
Let's suppose a lens. I need the light to enter into the lens from the edge
and to get out by the rear surface.
I don't know how to proceed yet, should I use NSC (non sequential component)