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ArcticMyst Security by Avery

Solarforce L2P hosting a Mits 500

Joined
Mar 25, 2013
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I have had this laser for a while, but decided to re-build it after doing some research on the diode. Here is what I used for the build:

Mitsubishi 500mW 638nm diode (from DTR)
SolarForce L2P Host with G-2 Lens (from Jayrob)
FlexDrive V5
1x18650 battery

I initially did this about a month or so ago with the FlexDrive preset at 800mA I believe, but after doing some research on this diode, I decided to up the current. I will first say that I absolutely love this host from Jayrob, and the work he did presetting and mounting the driver is always very clean and done well.

In the process of increasing the current, I first had to remove the driver from the host, which was challenging. I’m not sure what Jayrob used to mount his drivers but it works very well! I ended up using some Thermal adhesive remover made by arctic silver and it did loosen the driver enough so that I was able to remove it without damaging it. I then connected it back up to my test load and set the current at 1.026A, a current that I felt safe with after some research.

2s9owvn.jpg


I then re-mounted the driver back in the heatsink with some thermal adhesive and let it set for a while.

ouryti.jpg


How the host is set up it is very nice how the battery contact, driver, and module all fit into the heatsink so nicely, props to Jayrob again on the heatsink. All that was left to do is nicely all fit it back in the heatsink.

2v3oilj.jpg


nvxx93.jpg


ml1mo7.jpg


Then put the host back together

f9hax2.jpg


Once together the host looks really nice, and it is a decent size as well (comparison to battery shot below). The crown on the front of the host really shows it off.

4vnxba.jpg


vmq6n7.jpg


Once all complete I did the usual LPM and got a reading of 778mW with the G-2 lens.

30a85jr.jpg


The beam of this laser is super bright and very thick. The spot it produces is actually a small line rather than a dot, which might bother some, but I like it. Beam shots below. Overall I am very happy with this build.

e7ylua.jpg


2r7n9qu.jpg


Thanks for reading!
 





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Jun 2, 2013
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I like the build! Great job! too bad about the dot but on the bright side... you have a bright truly red laser:D
 

Laik

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Jan 22, 2013
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Nice build... well, rebuild :D I think your diode may be inefficient though because looking at lazeerer's review of these diodes, yours doesn't seem to be holding up to the data too well.
Iam Using an AR Coated Acrylic Lens in these Results. THe Diode is in a Large heatsink then held in place with a vice. Iam unsure of the temperature of the heatsink as i dont have anything to test the temperature with.

Iam using my ophir Laser power meter.


Voltge-----------mA--------------mW

2.0v-----------163mA-----------Threshold
2.0v-----------200mA-----------32mW
2.0v-----------250mA-----------71mW
2.0v-----------300mA-----------110mW
2.0v-----------350mA-----------151mW
2.0v-----------400mA-----------188mW
2.0v-----------450mA-----------230mW Voltage changed to 2.1v at 478mA
2.1v-----------500mA-----------264mW
2.1v-----------550mA-----------301mW
2.1v-----------600mA-----------336mW
2.1v-----------650mA-----------375mW
2.2v-----------700mA-----------410mW (voltage Switched to 2.2V at 685mA)
2.2v-----------750mA-----------441mW
2.2v-----------800mA-----------467mW
2.2v-----------850mA-----------502mW
2.2v-----------900mA-----------534mW (voltage Switched to 2.3V at 903mA)
2.3v-----------950mA-----------562mW
2.3v-----------1000mA----------587mW
2.3v-----------1050mA----------615mW
2.3v-----------1100mA----------642mW
2.3v-----------1150mA----------663mW
2.3v-----------1200mA----------680mW
2.3v-----------1250mA----------710mW
2.4v-----------1300mA----------732mW (voltage Switched to 2.4V at 1.3A)
2.4v-----------1350mA----------746mW
2.5v-----------1400mA----------758mW (voltage Switched to 2.5V at 1.4A)
2.5v-----------1450mA----------771mW
2.5v-----------1500mA----------798mW
2.5v-----------1550mA----------813mW
2.6v-----------1600mA----------816mW
2.6v-----------1650mA----------821mW
2.6v-----------1700mA----------833mW
2.6v-----------1750mA----------835mW
1.8A it Dimmes
 

jayrob

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Nice job...

By the way, I use Arctic Silver Thermal adhesive for the driver mount.

P.S. The pot is accessible, so you did not need to remove the driver to set the current. The lead wires were out the front a little...

But good job with it!
 
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Mar 11, 2012
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Nice build... well, rebuild :D I think your diode may be inefficient though because looking at lazeerer's review of these diodes, yours doesn't seem to be holding up to the data too well.

Laik, I love you, but you're killing me. That data shows 1050mA at about 615mW. He's pushing 1026 and hitting 778mW. Check your seeing balls man, I think the lasers are getting to them! :san:

EDIT: Even if you calculate the power boost from using the G2 lens versus the acryllic lens ( 20% in most cases ), thats only 738mW. Those tests were done with a glass lens, so the power boost from the lens will be even smaller. That's a pretty efficient diode.... :D
 
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Laik

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Just recalculated, my mistake man! I feel like an idiot :eek: Aw well, we all make mistakes, as long as we learn from them :)
 
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Just recalculated, my mistake man! I feel like an idiot :eek: Aw well, we all make mistakes, as long as we learn from them :)

You know what they say, live and let die... jk, there's no need to feel bad, I just like to tease everyone on the forum when they slip up. Because if I do it, then someone else is less likely to come along and start something over it. I remember when TechJunkie was around, and those flamewars came out of nowhere.:cryyy:
 

Laik

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Your not teasing me man it's fine. I just feel sstupid haha :D
 
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I remember when TechJunkie was around, and those flamewars came out of nowhere.:cryyy:

What? I dont remember "flame wars out of nowhere"? Yes he trolled a few people, but he also did a lot of good. Guess you've been around so long, you've seen it all...:tsk::whistle:
 
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Laik

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Can no one mention TJ anymore, please? I don't want this to escalate. :tsk:
 
Joined
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Dont worry I want planning to escalate anything...;) Just meerely making a point. Had he been a member here for many many years, I wouldnt have said anything. Maybe I got it wrong, but it just seemed like he'd read a few recent threads and formulated a rather biased opinion...:) :beer:
 
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Joined
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Dont worry I want planning to escalate anything...;) Just meerely making a point. Had he been a member here for many many years, I wouldnt have said anything. Maybe I got it wrong, but it just seemed like he'd read a few recent threads and formulated a rather biased opinion...:) :beer:

Oh, I'm sorry that it sounded like I didn't like him. He was actually the FIRST (not kidding, the absolute first) person to help me out on the forum. I think he spent more time viewing threads started by beginners than a large portion of the veterans on the server. No offence meant to anyone in my previous statement, I really liked TJ. Sorry if it came off that way :(.
 




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