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laser in the freezer






DiogoMotaPinto96 said:
I heard that the laser put in the freezer made him stronger. is that true?
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BullSh1t,
It's a good way to fry the diode and not only that, getting it cold and bringing it out into a warm area will cause condensation which will destroy beam quality.
 
I put in the freezer an hour and got stronger during a short period of time but I would advise years because I did not know whether the may also have damaged
 
DiogoMotaPinto96 said:
I heard that the laser put in the freezer made him stronger. is that true?
Click to expand...

Now some diodes are more sensitive than others to heat/cold. A little while ago a user sprayed canned air (upside down) into a laser and he got substantially higher power readings. Keep in mind this was one of the new 445nm diodes who's power can fluctuate with the heat.
 
I tested this with a 5mW greenie, after being exposed from cold to heat, the condensation(in theory) shorted out the diode.

Fun experiment though.
 
Kulhu said:
I tested this with a 5mW greenie, after being exposed from cold to heat, the condensation(in theory) shorted out the diode.

Fun experiment though.
Click to expand...


Wow....like we didn't see that coming. Water even in it's vapor form doesn't mix well with lasers....but this is a cool emoticon :lasergun:
 
I doubt it would help. I had the power of a 15mW CNI greenie drop quite a bit while it was outside in 10C weather or so. Holding it in my hand for a bit to warm it up fixed the problem right away.
 
Most cheap greens are fairly temperature sensitive, and usually run best at the temperature they were aligned and epoxied in from what i've seen.
 
Are CNI pens considered "cheap" greens then? It's the 15mW X-Series in my sig.
 
Yeah, I know. We initially swapped out the batteries, as I thought they might be getting low (two Ni-MH 800mAh AAA batteries), but that didn't help. It was a little while later that I had the thought, maybe it was the heat. Took just a minute to warm up, and we're back up to full power.
 
DiogoMotaPinto96 said:
YouTube - Hack your 200mw laser to burn like a 500mw or higher equivalent laser! Laser Hack laser hack! HD
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There is so much wrong with that video; the effect can be easily debunked (add an accelerant to paper and it burns faster, who would have thought?), and there are a number of factual errors (I'd bet money that's a new-style dilda, which is a direct diode laser, meaning no DPSS).

Others have pointed out that doing this will cause condensation which could damage the electrical components. Though for many DPSS lasers, this would actually decrease the power significantly. For example, my most powerful DPSS is a 350mW 532nm that peaks at 500mW when warm; when too cool though it takes 30+ seconds just to hit 300mW (too cool being the somewhat frigid temperature of my office).

To really sum it up: If you want a laser that burns like it's 500mW, then you'll need to invest in a 500mW laser. It would be nice if there was some trick to get more power (without destroying your investment), but there just isn't.

It's worth pointing out, you can now build a ~1W laser for around $200 thanks to the 445nm diodes, dropping the financial barrier to Class IV substantially.
 
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