Most Powerful Handheld 405nm Laser?

Alpertuner · Feb 21, 2011

david1235102 said:
Hopefully 24x 405 diodes come out sometime soon. That would be pretty sweet. If those came out we might be able to get 1W out of them. I'm hoping to acquire a 550-600mW 405nm sometime this summer.

I remember there was a topic which is about 24x532nm diodes or something like that.It was about upcoming casio projector or something.Is it true?
Hmm when those 24x405nm diodes will come?
I can wait them to buy one.
I hope divergence wouldn't be high as 445nm s and line beam profile.I'm still waiting for expander to my Spartan and wondering how it will look like after installation of expander.

david1235102 · Feb 21, 2011

Alpertuner said:
I remember there was a topic which is about 24x532nm diodes or something like that.It was about upcoming casio projector or something.Is it true?
Hmm when those 24x405nm diodes will come?
I can wait them to buy one.
I hope divergence wouldn't be high as 445nm s and line beam profile.I'm still waiting for expander to my Spartan and wondering how it will look like after installation of expander.

I don't know if it's true. I hope it is. Even if the divergence was the same as the casio diodes, they would burn better :evil:

qumefox · Feb 21, 2011

That is just wishful thinking at this point in time. As the diode technology improves, more than likely DLP based tv's and projectors will move to high power white LED's. After all, with DLP, there really is no benefit to using lasers. Casio only did it because at the time it was cheaper to use 445's and a green phosphor wheel than it was for green and blue high power LED's. My opinion on the matter that while lasers won't vanish from display devices, them being used in mass quantities will. DLP will move to high power white LED's and lasers will be used for scanning beam type display devices.

But that's just my opinion.

jakeGT · Feb 21, 2011

qumefox said:
Hey, YOU kill two of them that you bought with your own money, then get back to me on how funny you think it is. heh.

Hey, IT was a joke. I thought you were joking,

:beer:

Alpertuner · Feb 21, 2011

david1235102 said:
I don't know if it's true. I hope it is. Even if the divergence was the same as the casio diodes, they would burn better :evil:

I hope so because it would be very visible as 1W 532nm wow.As burning Spartan meets my all needs.I did burn a hole on a thick DVD cover(those have a pole on the middle of it) from 4 meters at about 40 seconds with it.I did search about 405nm and saw they are better burners even the best.That's why I want a 405nm.

qumefox · Feb 21, 2011

405's will never be in display devices. near UV has no place in that market. I think the last thing TV and projector manufactures want to do is put out products that give most of their customers bad headaches after extended viewing heh.

The only current market for 405nm is blu-ray. And the strongest diodes available now are the 12x's, which are good for about 700mW reliably.

And it would take a LOT of 405, probably several hundred watts, to match the visibility of one watt of 532nm.

Alpertuner · Feb 21, 2011

qumefox said:
405's will never be in display devices. near UV has no place in that market. I think the last thing TV and projector manufactures want to do is put out products that give most of their customers bad headaches after extended viewing heh.

The only current market for 405nm is blu-ray. And the strongest diodes available now are the 12x's, which are good for about 700mW reliably.

And it would take a LOT of 405, probably several hundred watts, to match the visibility of one watt of 532nm.

Yes you are right.I was talking about 1W 532nm would be very visible.Sorry for causing misunderstood.Talking about brightness technical information says 1W of 445nm equal to 100mw of 532nm.However my Spartan outmatches my friend's 200mw 532nm.Maybe my eyes sensitive to 445nm or my friend's laser is underpowered.I saw some pictures on forum about 1W 445nm vs 1W 532nm.Ofcourse 532nm was brighter but there wasn't huge difference like it should be according to technical information.Then I saw a thread abour 445nm which says human eye is more sensitive to 445nm than 532nm at dark.I just confused.Can someone enlighten me?

qumefox · Feb 21, 2011

You can't go by pictures when judging beam brightness. There are too many variables. How the camera reacts to the light, was there fog? etc. All of this will change how the beams appear. Fog will greatly 'even the playing field' of different powers to most cameras. And your friend's 532 is most likely underspec. the last time I had a 445 running at 1W, the beam brightness was about the same as my measured and ir filtered 60mW 532.

DJNY · Feb 21, 2011

Why not just buying this one?

http://laserpointerforums.com/f39/fs-405nm-12x-600mw-60924.html

jedirock · Feb 22, 2011

jakeGT said:
jetlasers sells an 800mW 405nm laser.

They were selling an 800mW model. At least in their latest GB, they've now said that they don't think they'll be able to hit at least 800mW reliably, so it's looking to be a 700mW rated model now.

jakeGT said:
NEVER EVER EVER EVER POT MOD A LASER. That's just plain ridiculous. IF you want to kill your laser, and have a expensive @$$ paperweight, go for it.

You can pot mod a laser, but only certain types. I haven't done much research on this myself, but my understanding is that the main problems with pot modding come with DPSS lasers where the power output has already been maxed for the crystals used and their alignment when made. I don't believe it's a problem with diode only lasers, such as the 445s or 405s. Someone feel free to correct me on this if I misunderstand.

RA_pierce · Feb 22, 2011

jedirock said:
\
You can pot mod a laser, but only certain types. I haven't done much research on this myself, but my understanding is that the main problems with pot modding come with DPSS lasers where the power output has already been maxed for the crystals used and their alignment when made. I don't believe it's a problem with diode only lasers, such as the 445s or 405s. Someone feel free to correct me on this if I misunderstand.

"Pot modding" is really just a simple current adjustment.
It is ok as long as you are driving the diode within its limits.

In many cases, pot modding results in a broken laser because without testing the driver's output, you really have no idea how much current you are pushing through the diode.

qumefox · Feb 22, 2011

RA_pierce said:
"Pot modding" is really just a simple current adjustment.
It is ok as long as you are driving the diode within its limits.

In many cases, pot modding results in a broken laser because without testing the driver's output, you really have no idea how much current you are pushing through the diode.

Plus there's the very high risk of breaking said lasers just by taking it apart. Most chinese lasers are 90% glue.

Most Powerful Handheld 405nm Laser?

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