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 Laser Pointers New Mitsubishi diode 2.1 W, 639 nm

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04-26-2017, 06:17 PM #33
 Super Moderator Join Date: Jan 2014 Location: Qatar, land of the melted. Posts: 9,502 Rep Power: 1658920
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Re: New Mitsubishi diode 2.1 W, 639 nm

I think it would be a cool laser to knife edge two of them together, maybe even PBS cube combine them, would be an awesome multi-beam pointer

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04-26-2017, 06:22 PM #34
 Class 3B Laser Join Date: Jun 2015 Location: Brentwood, England (Near London) Posts: 4,578 Rep Power: 1641482
CurtisOliver
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Re: New Mitsubishi diode 2.1 W, 639 nm

I would say are you up to it, but you by far have enough projects on the go.
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04-26-2017, 06:26 PM #35
 Super Moderator Join Date: Jan 2014 Location: Qatar, land of the melted. Posts: 9,502 Rep Power: 1658920
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Re: New Mitsubishi diode 2.1 W, 639 nm

Ha, not me, not any time soon... I'm already buried in parts for future projects, idiot I am buying so much instead of saving every buck out here.
__________________

Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37

Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

High Current Pulse Drivers: https://tinyurl.com/ya7whuk3

04-26-2017, 06:56 PM #36
 Class 3B Laser Join Date: Jun 2015 Location: Brentwood, England (Near London) Posts: 4,578 Rep Power: 1641482
CurtisOliver
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Re: New Mitsubishi diode 2.1 W, 639 nm

Yes I know. You are like me. What can I buy now.
No, try not to buy anymore laser parts unless it truly is a unmissable bargain.
__________________
Notable products/sites:

Jet Lasers offers various high quality Diode/DPSS Portables in their PL-E Pro hosts. Jet Lasers are known for their quality and are respected on LPF.
Jetlasers PLE Pro's

Dragon Lasers offers the best option for 589nm (Yellow) Laser pointers.
Dragon Lasers Yellow Laser Pointers

Sanwu are known to be very high quality and every newcomer should check them out.
Sanwu Home

Bang good is a good source for many electrical items and are often cheap and reliable.
Bang Good Home

For reliable safety goggles visit Survival Laser. Use LPF445 for a 10% member discount.
Eagle Pair Safety Goggles

Which company should I buy from? By Sta

Use this link if you want the chance of winning free bitcoin.
Every hour you can roll for some free satoshi which you can then spend on lottery tickets.
Lotteries are weekly and often see >1 BTC prize totals worth around \$10,000.
It doesn't cost you anything and you could end up winning big, meaning you could have more money for lasers.

Free Bitcoin Lottery

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04-26-2017, 08:58 PM #37
 Class 4 Laser Join Date: Sep 2013 Location: Washington State Posts: 8,827 Rep Power: 1678339
paul1598419
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Re: New Mitsubishi diode 2.1 W, 639 nm

Quote:
 Originally Posted by diachi You could re-combine the two output beams, and correct them. But would it be worth it? Probably not. You'd be better off just combining two separate diodes
Well, of course it could be done, but it would be an incredible hassle. I suppose I should watch the way I put things as they seem to be taken too literally. I can't think of anyone here that would even attempt this. It would be cheaper and far easier to combine two ML501P73 diodes than to do all that would be necessary to combine two beams from this single diode.
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04-26-2017, 09:22 PM #38
 Class 4 Laser Join Date: Feb 2008 Location: Yellowknife, NT, Canada Posts: 9,129 Rep Power: 1184833
diachi
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Re: New Mitsubishi diode 2.1 W, 639 nm

Quote:
 Originally Posted by paul1598419 Well, of course it could be done, but it would be an incredible hassle. I suppose I should watch the way I put things as they seem to be taken too literally. I can't think of anyone here that would even attempt this. It would be cheaper and far easier to combine two ML501P73 diodes than to do all that would be necessary to combine two beams from this single diode.
Yeah, figured you might have meant that.

Not practical, large space requirement, high cost, too many components. Agreed, as per my last post, combining two lower powered single emitter diodes would be far more practical.

Could couple each beam (from each emitter) into PM fiber and combine with a PBS, that's probably one of the less complicated ways to do it but you'd see significant power losses and potentially rather fat output beams (Although they'd be round/homogenized).
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Last edited by diachi; 04-26-2017 at 09:24 PM.

04-27-2017, 09:25 AM #39
 Class 1 Laser Join Date: May 2014 Location: Spain Posts: 73 Rep Power: 47003
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Re: New Mitsubishi diode 2.1 W, 639 nm

Quote:
 Originally Posted by diachi According to this data (see below, bottom table and second paragraph at the top), the G85 is dual emitter? I had originally thought it'd be single emitter going off of other specs and available info, but this information contradicts that.
I asked Mitsu and You're right, 2 emitters

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