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Old 06-20-2010, 04:22 PM #49
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Default Re: List of 445nm diodes

Updated again.

It would be nice if everyone would say whether they use the A130 or A140 diode, to see if there is a noticable difference in the data.


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Old 06-20-2010, 04:36 PM #50
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Default Re: List of 445nm diodes

My second diode is in a jayrob 18650 host with a flexDrivev5 set at 600mA, Its currently putting out 375mW with a aixiz acrylic( still waiting on my 405 glass to arrive) it came from a 130( I assume all of EF's GB's came from a 130). Still alive, as I have only used it for a couple of short bursts, as I don't want to risk melting the lense. Finished building it on jun 17th.

I actually had to limit the power on my first diode, as the blue was dominating my red and green in my projector.
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Old 06-20-2010, 05:14 PM #51
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Default Re: List of 445nm diodes

Today I put together my first 445 build, nothing fancy:

Dorcy Jr with heatsink from stonetek, Aixiz 405 glass lens, A130 diode. The driver is my own boost design.

520mA to the diode result in 415mW. Run time is well under one hour.
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Old 06-20-2010, 06:51 PM #52
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Default Re: List of 445nm diodes

Thanks, good hint!!! I forgot about that project... I already have the IR thermometer, it is just a matter of building the sensor.

If it not precise, it will give an idea in what range I am working on.
Jose

Quote:
Originally Posted by rev0 View Post
I recommend checking this out for a simple LPM. I don't know how well this would work with such a high power diode, but it's worth a shot, should only cost about $17 to build.

Simple Laser Power Meter Using IR Thermometer
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Building Laser Pointers Using the 445nm Laser Diodes
Diode Lasers:
405nm: 15 and 35mW built, PHR 405nm, 100mW, Dagin's Dorcy built ~200mW
445nm: Built ~3W and Jayrob Built - 445nm <1W
532nm: 70mW and ~200mW
635/650nm: 200mW, and several builds
Gas Lasers:
337nm: Nitrogen (N2) laser, 3mW, 175uJ/pulse, peak @ 30kW and a 6mW, 260uJ/pulse, peak @ 75kW
632nm: Melles Griot HeNe, 0.5, 1. 0 5 0 and 15. 0mW
Dye Laser(s):

380-~1000nm: Different laser dyes, different wavelenghts, different laser powers.

Crystal Laser:
Holmium YAG (Ho:YAG) laser, 2.1 μm, 53W

Assorted laser accessories, including LPM, optics, and a holography table.

Last edited by jmgallego; 06-20-2010 at 07:10 PM.
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Old 06-20-2010, 09:04 PM #53
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Default Re: List of 445nm diodes

XJ-A140 diode at 1A.


I don't know the output power. I use the 405-G-1 lens and a LM317-based driver. The aluminum heatsink is ⌀30mm x L65mm (finned). Total runtime is maybe 1 hour. Still working good.
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Old 06-20-2010, 10:29 PM #54
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Default Re: List of 445nm diodes

Current= 900ma
Power = 980mw
Lens = Aixiz 445 Glass
Driver = LM317
Host = DIY TEC Labby
Power Source = 15v 10A DC power supply
Operating Time = 3~4 hours
Source= I think AJ-X130 it came from EF's GB 2 or 3.


Hears a pic of my contraption if any one is interested to see it.
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Old 06-21-2010, 05:44 PM #55
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Default Re: List of 445nm diodes

Updated once more, starting to look complete. Hopefully someone will find the information here useful.
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Old 06-22-2010, 02:58 AM #56
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Default Re: List of 445nm diodes

Grix,

Please take me out of the list, my measurement are way off. I will delete my posting so it does not confuses people.

I am going to build a dummy load and already ordered a LPM from Ken (Kenom). Once I receive it, I will repeat the measurement and let you know.

Thanks for gathering the data, it will be interesting to see the information collected.

Thanks!
Jose
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Building Laser Pointers Using the 445nm Laser Diodes
Diode Lasers:
405nm: 15 and 35mW built, PHR 405nm, 100mW, Dagin's Dorcy built ~200mW
445nm: Built ~3W and Jayrob Built - 445nm <1W
532nm: 70mW and ~200mW
635/650nm: 200mW, and several builds
Gas Lasers:
337nm: Nitrogen (N2) laser, 3mW, 175uJ/pulse, peak @ 30kW and a 6mW, 260uJ/pulse, peak @ 75kW
632nm: Melles Griot HeNe, 0.5, 1. 0 5 0 and 15. 0mW
Dye Laser(s):

380-~1000nm: Different laser dyes, different wavelenghts, different laser powers.

Crystal Laser:
Holmium YAG (Ho:YAG) laser, 2.1 μm, 53W

Assorted laser accessories, including LPM, optics, and a holography table.

Last edited by jmgallego; 06-22-2010 at 03:05 AM.
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Old 06-22-2010, 05:04 AM #57
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Default Re: List of 445nm diodes

~500mw @ ~700ma with an aixiz 405 lens in a host similar to a pocket mini using a flex drive v4. aixiz module press fits into the heatsink very tightly.
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Old 06-22-2010, 03:58 PM #58
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Default Re: List of 445nm diodes

Hi.

I made two of my 445nm today.

#1
XJ-A140 (from Daniel @ PL)
microflex v5 set to 850mA
405-G-2 lens
heatsink - custom P60
powered by 18650
10min - 1min x 10
LPM - Kenometer lite

Output power after lens is "1130mA"!!!

#2
XJ-A140 (from Daniel @ PL)
microflex v5 set to 406mA
Aixiz 405nm lens
Trustfire F23 (host for protected 10440)
powered by 10440
10min - 1min x 10
LPM - Kenometer lite

Output power after lens is 260mW.

I checked the power repeatedly.

SHIN
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Old 06-22-2010, 04:03 PM #59
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Default Re: List of 445nm diodes

Hmmm... both of those A140 diodes seem to be much higher efficiency than my two A130 builds... (power vs current)

I have two A140 diodes from Daniel's PL group buy as well...

My next build will be using one of the A140's to see what it's like at over 900mA's...
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Old 06-22-2010, 10:36 PM #60
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Default Re: List of 445nm diodes

i dont think the flex v4 im using is quite doing the job for mine. i expected a little more @ 700ma... ive got 2 of the micro boost on the way so ill try those out when they get here and let you know what happens..
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Old 06-24-2010, 02:14 AM #61
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Default Re: List of 445nm diodes

The twins.
KevinMassey:
650mA - 477mW
v5 flex
aixiz 405 glass
Cree A10B/Copper HS
June 23 2010
KevinMassey (2):
875mA - 730mW
v5 flex
aixiz 405 glass
CreeA10B/Copper HS
June 23 2010

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Old 06-24-2010, 10:37 AM #62
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Default Re: List of 445nm diodes

Updated with an efficiency graph showing the apparent difference between 130 and 140 diodes.
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Old 06-24-2010, 11:23 AM #63
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Default Re: List of 445nm diodes

Wow, that ones really efficient!!! HMMM may need to buy an 140.

Keep up the good work.
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Old 06-24-2010, 03:29 PM #64
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Default Re: List of 445nm diodes

Quote:
Originally Posted by Grix View Post

Efficiency graph:

First, a bit of nomenclature: that is an L-I curve, light output vs. current in, not an efficiency graph. The differential efficiency can be calculated from from the slope of this curve, but I wouldn't try it with this particular curve, as it seems a bit noisy.

Second, speaking of noisy, I believe with this particular chart that that doesn't look like a statistically-significant difference to me. Both signals lie within the noise of each other, so to speak. To put it another way, both of those curves lie within the error bars I would assign to each data point, meaning, there would statistically be no difference. There may yet be a difference, I'm just saying I don't believe that graph shows much of one, especially when your sample size is 2 and diodes can vary as much as they do even within the same diode type.
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