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Old 03-12-2011, 11:27 AM #161
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Default Re: GB 20mW 635nm diode

Thank you RA! Nice first impression.

I´ve heard that the 638nm diodes have a much rounder beam profile than the 635nm ones.


And thank you for the +rep


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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 03-12-2011, 06:20 PM #162
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Default Re: GB 20mW 635nm diode

Just FYI, in my last order of 405/445 lenses, I also ordered 50 red AR coated acrylic lenses. The samples I already have test much better than the standard uncoated aixiz acrylic that comes with the modules, and better than the aixiz glass 3 element 650 lenses as well. I unfortunately don't have any 650-g-1's to compare them against though.

I will be going to the office for a while this afternoon and i'll try to remember to carry one of my 650's with me and get some hard numbers.
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Old 03-12-2011, 10:56 PM #163
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Default Re: GB 20mW 635nm diode

Just checked the lenses on a 650nm LOC.

Aixiz acrylic : 275mW
Aixiz glass for red : 285mW
Red AR coated acrylic : 292mW

So the AR coated acrylics I have offer about a 6% power increase over non-AR coated aixiz acrylics.
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Old 03-12-2011, 11:13 PM #164
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Default Re: GB 20mW 635nm diode

I can't stand it, I just have to fire it up.
I only have an o-like module with a 3-piece coated for 405/445 lens.
Can I risk the reflection to the diode, or would that be a stupid thing to try?
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Old 03-13-2011, 12:08 AM #165
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Default Re: GB 20mW 635nm diode

Quote:
Originally Posted by anselm View Post
I can't stand it, I just have to fire it up.
I only have an o-like module with a 3-piece coated for 405/445 lens.
Can I risk the reflection to the diode, or would that be a stupid thing to try?
It's certainly not going to give you the most power but it's not going to damage your diode.
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Old 03-13-2011, 01:45 AM #166
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Default Re: GB 20mW 635nm diode



Compared to a 5mW cheapy pointer. Sorry for the picture quality, very bright and beautiful orange-red in person
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Old 03-13-2011, 04:45 AM #167
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Default Re: GB 20mW 635nm diode

So when comparing the 635nm with a 650nm it looks more orange-red.

But what if you were not comparing the two? What if someone just shined a single 635nm laser at a wall, could you tell that it was orangish-red. Or would it look like a regular red laser until you see them compared next to each other?

If that question makes any sense. I am a little tired.
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Old 03-13-2011, 06:35 AM #168
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Default Re: GB 20mW 635nm diode

^ I can easily say if you´re shining a 635nm or 650nm, even in daylight.
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445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 03-13-2011, 06:03 PM #169
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Default Re: GB 20mW 635nm diode

If you've seen both wavelenghts, you can probably tell them apart. To a non-laserist, it's just a bright red laser. My girlfriend didn't believe it was orange-red until I showed her the comparison. I'm very happy with this diode, I'm up to 5 colors!
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Old 03-14-2011, 10:30 PM #170
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Default Re: GB 20mW 635nm diode

Finally had a chance to put one of these in a host. The host is a blue hotlights from moh with a rkstr drive set at 75 mA, 2 10440 for batts and aixiz acrylic lens getting about 12mW

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Old 03-15-2011, 12:24 AM #171
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Default Re: GB 20mW 635nm diode

Quote:
Originally Posted by DJNY View Post
^ I can easily say if you´re shining a 635nm or 650nm, even in daylight.
Sweet,
I want a 635nm now. lol.

I really want one in a pen host. But I hear they are hard to build in pen hosts.
The smallest build I have done is an Ultrafire c3. And I had the driver current pre-set since I didn't have a DMM.
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Old 03-15-2011, 07:27 AM #172
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Default Re: GB 20mW 635nm diode

Quote:
Originally Posted by hxdrummerxc View Post
Sweet,
I want a 635nm now. lol.

I really want one in a pen host. But I hear they are hard to build in pen hosts.
The smallest build I have done is an Ultrafire c3. And I had the driver current pre-set since I didn't have a DMM.

RA currently has one FS:
http://laserpointerforums.com/f39/fs...sts-61446.html
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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 03-16-2011, 04:37 AM #173
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Default Re: GB 20mW 635nm diode

Quote:
Originally Posted by DJNY View Post
Oops! The 6mW is sold. I should update the title.
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Old 03-16-2011, 01:29 PM #174
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Default Re: GB 20mW 635nm diode

Got my diodes last week, thanks.

Yesterday I put one in an Atlasnova "<5mW" 650nm red pointer. No modification necessary to the original driver (case-positive), which uses the LD's internal photo diode for regulation.

I experimented a bit and found that the PD in my 20mW 635nm diode puts out ~200uA when lasing at 13mW. That seems somewhat consistent with the data sheet provided. I did not want to push for the full 20mW after an uncoated plastic lens.

Very easy build because every part from the host can be kept, only the driver needs to be adjusted for the new PD current.
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Old 03-18-2011, 09:03 PM #175
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Default Re: GB 20mW 635nm diode

What currents are you people pushing these at?
I just did a first test at ~80ma and, while I'm quite happy with the color and the
brightness, I'd like to push it a little, maybe 95~100ma.
I have no laser power meter or spectral analyzer to quantify the results though.

So, who has pushed his the furthest, and at what current does the color get deeper?

I really like it the way it looks now, very bright for such a low power!
I believe once the wavelength starts to shift into the deeper red, it's kind of defeating
the purpose of this diode.
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Old 03-20-2011, 10:33 PM #176
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Default Re: GB 20mW 635nm diode

So many people in this groupbuy, did everyone stash theirs away, afraid to touch it?

20mW "DJNY" diode @~85mA VS 40mW "sayno(sic)" diode @125mA.
Interesting. The camera screws up the color in the middle of because of the higher
intensity, in reality it is just the same color all around (obviously, this is a LD after all).
I didn't think these would have such a different raw output, elliptical vs perfectly round.
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