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FrozenGate by Avery

Update






Re: Update on my Herc

It appears your Herc behaves much like my PGL (only with longer run times, obviously).
My PGL also deviates from TEM00, but I think it is normal.
High power units like these are difficult to keep in perfect TEM00 as the cavity design is much simpler and less efficient than in lab units.

I'll be looking forward to seeing more results.
 
Re: Update on my Herc

RA_pierce said:
It appears your Herc behaves much like my PGL (only with longer run times, obviously).
My PGL also deviates from TEM00, but I think it is normal.
High power units like these are difficult to keep in perfect TEM00 as the cavity design is much simpler and less efficient than in lab units.

I'll be looking forward to seeing more results.
Click to expand...


Could either of you explain this "TEM00" you speak of? What do you mean it does in and out of it, or has trouble staying there?

Confused!
 
Re: Update on my Herc

laze_doctor said:
So I got my LPM the other day and I was absolutely blown away to discover that my Herc consistently peaks in the low to mid 700s and averages in the low to mid 600s!

Here's a pic (webcam quality, camera is out of action again) of the highest peak I've seen so far, 764mW!!!

Grhkc.jpg


That was with the laser 6" away from the power meter, using fresh Duracell batteries (about 15min of use on them). Apparently Duracell Ultra have higher amperage and thus will give more output, but I am having trouble finding some. Soon I'll be moving to NiMH rechargables.

The only problem with the Herc is that it sometimes has issues getting into TEM00 (it will sometimes sit in hybrid tranverse modes for a while). Seeing as I have way more power than I'll ever need I am planning to tune it down slightly to get better beam quality. I have wired up a multimeter inline in the Herc's power supply so I can see how much current it draws -- that way I can put it back to the original setting if necessary. Should get around to this in a week or so, and I'll post the results in this thread!

:D
Click to expand...

How can you tell if it is in "TEM00" mode or not?

What is a good/bad mode to be in and how can you tell?

Could you explain this more for me? Thanks!
 
Re: Update on my Herc

b3nault said:
How can you tell if it is in "TEM00" mode or not?

What is a good/bad mode to be in and how can you tell?

Could you explain this more for me? Thanks!
Click to expand...
TEM00 is a perfectly (as close as is possible in a laser) round dot. It is a good thing.
A lot of DPSS lasers "mode hop", that is lose TEM00 and go into other modes. (see above link)
Temperature seems to have the most to do with it, other then the manufacturing process.
It is most prevalent in hi-power 532nm and "rare" color lasers.
EDIT: just seen aryntha beat me to the punch, oh well, I already typed it.LOL
 
Re: Update on my Herc

^people up there that don't know about TEM00 need to be acquainted with their inner search bar... :crackup:
 
Re: Update on my Herc

This level of overspec performance is actually not all that unusual for a high-powered Hercules. When we test and grade these units, we measure the output power over a full 20 minute testing period, then take the average of this period and subtract the standard deviation (to account for instability and any momentary fluctuations in power). This results in very generous ratings which are reflective of the instability which is inherent in a 20 minute test period of a handheld laser. The rating is sort of a "minimum average" which has been adjusted for instability.

We're very confident that this mathematical model of rating lasers is accurate, fair, and generous! If any mathematicians want to suggest a better model I'm open to new ideas. Payment will be made in the form of green photons.
 
Re: Update on my Herc

Info removed from here, pending my revised review.
 
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