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jgrimm

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Hi everyone...

Ran across your forum whist researching DPSS lasers and how they operate. (way out of my budget. I tend to stick to inexpensive handhelds)

I am assembling a 405nm (803T) handheld as my first project. When my driver arrives (non-pulsed), I will tune it to a tick under 110mA which will hopefully give me around 100mW of output and a reasonable diode life. (if I'm wrong please correct me)

Also pondering the notion of building a 405nm, 300mw'ish handheld. What might you all think of this diode? 405nm 300mW blu-ray laser diode /6x blu-ray diode sled - eBay (item 170472935861 end time May-14-10 03:53:30 PDT) Ill pair it to a non-pulsed driver set at around 320mA. Afraid it may die quickly? Eh, I'm not sure, any suggestions highly appreciated.

I don't know much about lasers, but I love the search button and Google; that's how Ive managed to plan my first build, lol.

Anyhow, cool forum and its nice to be a part of it. :D
 

toogoofy

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welcome enjoy your time at lpf:beer:
Anybody can correct me but I don't think a 6x will be able to get to 300mw w/o dying quickly.
Most run it at around 200ma and will be around 200mw.
Hope this helps,
Toogoofy

EDIT: 100th post!:wave:
 
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toogoofy

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try to stick to places like hightechdealz or modwerx I thin khightech dealz has 6xs
I say this because kendall(hightech) and drew(modwerx) are really cool and will help you, most of all don't over spec there stuff:angel:
 
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HIMNL9

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Welcome to the forum.

No, as far as i know, 6X diodes can give you like 170/180mW (SF-AW laser diode) or like 200/210mW (if is a GGW diode), and the one in the auction is an SF-AW diode ..... you can use it with a good heatsinking mount around 200mA max, better 170/180 for a more long and safe use, but pushing it to 320mA, you risk to pop it in few hours.
 

daguin

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Their graph was stolen from me. They do not understand it and are misusing it.

Do you see that "wiggle" in the line ~180mA? That is called a "kink."



In order for a diode to live, you must keep the current below that kink.

In the case of the SF-AW210, you must keep the current below ~180mA (+- a little for individual diodes)

Peace,
dave
 
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jgrimm

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Hey thanks you guys! I really appreciate the info :D

I thought Id better ask someone knowledgeable when it comes to lasers about the ebay stuff before I buy (after hearing some negative reviews)

Glad I did ask, as I just picked up a nice bit of knowledge. (keeping the mA under the kink)

I still may build one to run at 200mA (Ill machine a housing with some major cooling fins) with that diode (my bro wants a laser anyhow)

Anyways, thanks for the help guys :thanks: My laser is really nothing special, and yall probably have some crazyyy lasers of your own that are a crap ton better than the one Im building, but Ill get a thread put up about my build with pics whenever my driver gets here.

-Jt
 

daguin

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Hey thanks you guys! I really appreciate the info :D
I thought Id better ask someone knowledgeable when it comes to lasers about the ebay stuff before I buy (after hearing some negative reviews)
Glad I did ask, as I just picked up a nice bit of knowledge. (keeping the mA under the kink)
I still may build one to run at 200mA (Ill machine a housing with some major cooling fins) with that diode (my bro wants a laser anyhow)
Anyways, thanks for the help guys :thanks: My laser is really nothing special, and yall probably have some crazyyy lasers of your own that are a crap ton better than the one Im building, but Ill get a thread put up about my build with pics whenever my driver gets here.
-Jt
Cooling/heat sinking has nothing to do with it. It has to do with how much "pressure" the die/crystal can handle. If you think that 200mA is some sort of "magic" number use a GGW-H20L instead of an SF-AW210.

It is better to give up a dozen milliwatts than to have your diode fail and have to rebuild it ;) When that happens, you not only have NOT saved any money, you have to rebuild it AND you have to suffer the frustration of the FAIL

Peace,
dave
 

toogoofy

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Hey thanks you guys! I really appreciate the info :D

I thought Id better ask someone knowledgeable when it comes to lasers about the ebay stuff before I buy (after hearing some negative reviews)

Glad I did ask, as I just picked up a nice bit of knowledge. (keeping the mA under the kink)

I still may build one to run at 200mA (Ill machine a housing with some major cooling fins) with that diode (my bro wants a laser anyhow)

Anyways, thanks for the help guys :thanks: My laser is really nothing special, and yall probably have some crazyyy lasers of your own that are a crap ton better than the one Im building, but Ill get a thread put up about my build with pics whenever my driver gets here.

-Jt
Hey man remember: every biuld is special:beer:

LPF members are addicted to laser videos especially ones that have creative experiments (hint hint:whistle:).

Good Luck!,
Toogoofy
 

kingdave2357

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I have an SF running at 177mA with a V5 flex. Using a jayrob 405nm G-1 lens I am getting around 233mW out of it:D Not too bad for a $30 diode!!! But if you want power than 8X is your best bet, but they are kinda pricey and if you ruin it....
 

Greenmechanic

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Welcome to the forum.
Sounds like you are off to a good start. (asking before buying)
 




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