Lasers and Motorcycles

[kingdave2357]

What was the point of editing the title to lasers and motorcycles???:thinking:
Anyway, it seems my 473nm PGL is doing even better than when I first got it, which supports the break in theory, its rated 20mW, puts out a continous around 50-65mW and peaked at 74mW so far, the peak on the day I got it was 66mW at best, and cont output was lower, but not by much.
What is strange is that my 473nm seems to like the freshly charged 18650's and performs well with them, however my 589nm doesnt like a full charge at all, gets warm pretty quick, and begins to dim, but with batts that have been discharged some, it performs wonderfully, stays very bright, through the whole duty cycle w/o any dimming.
I need to test the charge level now at optimum performance, to get an idea of how long to charge them.

 

[lasersbee]

Hey H_M.... where do the Motorcycles come in....:thinking:
Reminds me of another thread about a 1 Watt Labby...:crackup:
Is there a connection....:evil:


Jerry

 

[RA_pierce]

Re: CNI GLP-473 Blue Review

It looks like it likes to be not-so-cold, but wants to be able to dissipate the heat it does generate.

Your observations of the 473nm DPSS lasers sounds like my 532nm PGL.
Lately, I've been trying to exceed the highest peak of 816mW...
I have come close... 814mW and 799mW several times.
My method is this:
I will run the laser up to a "normal" peak (710-750mW), which it will typically reach in 45-60 seconds, and shut it off.
I then let the laser cool off for ~30 seconds.
On the next power up, the crystals are already "pre-heated." The peak is usually much higher than the last, and the laser reaches peak within the first 10-20 seconds after power up.
It will hold ~700mW for 20-30 seconds and then start to settle at ~650mW for a minute or so then drop off as heat builds up.

It seems like the optimal temperature range is very narrow, and as soon as it gets too warm, the power will drop off and settle.

799mW:


814mW:


Sorry for the crappy picture quality. All I had within reach was my cellphone.

This laser is behaving so much differently (read: better) than the day I got it...

Same with my green PGL- the harder and longer I pushed it, the better the performance... which is why I made a second review.


I can't say anything about blues, since my PGL-III-C 50mW was delayed in GB7... But I upgraded to the 80mW version and it will be on it's way with the rest of GB9.

 

[DJNY]

Re: CNI GLP-473 Blue Review

Keep using it for a week and let me know; this "break in" thing does seem to have some merit. Give it 30 second duty cycles with 2-3 minutes of rest inbetween.

It works stable know, I don´t know if the GLP also don´t like full batteries :thinking:
It is in stable TEM00 and has a visible beam in a lit room. Hope it maintain it´s quality till I die!!





-- Happy end --

 

[phoenix77]

Aryntha, I am so glad that you backed me up with my findings on the 473 laser. I was having a hard time believing what was happening myself. Now, with all the other 473 owners chiming in too, I know I'm not going crazy. rob