Unfortunately not far enough in the past.......
From the Coherent 599 manual:
=====================================================
1. Pour 750ml ethylene glycol into a clean container.
2. Dissolve 1 gram of R6G in 50ml of reagent grade
methanol, add to the ethylene glycol, pour into the
dye reservoir.
3. Dissolve 2 grams of R6G in 100ml of methanol.
After laser is lasing, add small amounts at a time
to optimise the power output. Normally, a total of
2-3 grams of dye is required in the solution for
optimum performance.
Note that one to two minutes are required for the
dye concentration to become uniform.
4. Add COT if desired.....
======================================================
I just do steps 1 and 2, I've found that step 3 does
not make a lot of difference.
I've never dared to muck about with COT....
Averaging about 6 hours a day the dye mixture lives
for about 6 months; gradual loss of power, then a
rapid drop-off when the stuff looks really brown.
Cheers, Joseph.
At 08:38 21/2/2001, Steve G. Hilliard wrote:
>A blast from the past--can anyone tell me the consituents of the rhodamine
>6G solution used in dye lasers? I just got off the phone w/ Coulter--they
>seem to have purged these documents. I know it was ethylene glycol,
>rhod6G and a pinch of methanol, but can anyone tell me exact
>concentrations?
>
>Thanks!
>
>Steve
This archive was generated by hypermail 2b29 : Wed Apr 03 2002 - 11:57:24 EST