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Where can I get a 635nm laser pointer?

Kenom

Kenom

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The problem is that the technology for high powered 635nm diodes just wasn't as necessary as that for 660nm diodes so you won't see any "diodes" of real high power for cheap. Anything that goes over say 100mw is going to be a DPSS laser and utilizes a completely different setup. I can make a few 30mw lasers for a pretty reasonable price if your truly interested. $100 give or take
 





Xplorer877

Xplorer877

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Kenom said:
The problem is that the technology for high powered 635nm diodes just wasn't as necessary as that for 660nm diodes so you won't see any "diodes" of real high power for cheap.  Anything that goes over say 100mw is going to be a DPSS laser and utilizes a completely different setup.
Click to expand...

Yeah I've never seen a DPSS red pointer or portable. I've just seen some full DPSS RGB lab lasers. Would a DPSS red laser be expensive like blue and yellow lasers (because of the crystals maybe)?

-Tony
 
Kenom

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Yeah they are just as, if not more expensive than the greens, as there is not a lot of call for them like there is greens.
 
Cyparagon

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A DPSS red is between a green and a blue in price. It could be done, but I don't see myself spending $200 on a red pointer.
 
Traveller

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Kenom said:
The problem is that the technology for high powered 635nm diodes just wasn't as necessary as that for 660nm diodes...
Click to expand...
From what I understand they are all based on AlGaInP and that 635nm is the lower limit... .

What I have yet to figure out is why they even bother with 635nm - meaning, what advantages does this wavelength really have over 650, for example? In terms of visibility, there's no comparison with, say, a 532nm laser of the same power level, so why do some vendors still offer such wavelengths?
 
Xplorer877

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Traveller said:
[quote author=Kenom link=1229168414/0#16 date=1231773369]The problem is that the technology for high powered 635nm diodes just wasn't as necessary as that for 660nm diodes...
Click to expand...
From what I understand they are all based on AlGaInP and that 635nm is the lower limit... .

What I have yet to figure out is why they even bother with 635nm - meaning, what advantages does this wavelength really have over 650, for example? In terms of visibility, there's no comparison with, say, a 532nm laser of the same power level, so why do some vendors still offer such wavelengths?
[/quote]

Very true! I, like most other laser hobbyists, want a complete spectrum of laser pointers. 635nm can be differentiated from 650nm when comparing them side by side.

Since higher powers are more elusive at 635nm, does anyone know of a for sure source of 635nm 5mW laser pointers? Other companies I have seen advertise them at 630-660nm, or I just don't trust that they take care in advertising the true wavelength and just call it red.

Thanx
-Tony
 
Traveller

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Xplorer877 said:
...want a complete spectrum of laser pointers...
Click to expand...
Oh, no worries, I do understand why we want them, but I was just wondering if 635 offers any specific, scientific purpose... .

I already wrote to the source you quoted above and I'm considering their 30mW 635. At first I was ok with the €99 price tag but that's before I realized the prices were quoted w/o tax (because in most EU countries, taxes are already included in the listed price). So this means my final price would be €120 ($155). Considering I got a very nice 50mW 532nm for €140 and awaiting my €40 DX 200mW 650, €120 sounds pretty steep for a 30mW "red"... :-/

Their 5mW 635 would run me €36 but I'm not sure if 5mW makes sense. Why did you drop down to 5mW... because of budget?
 
Razako

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Xplorer877 said:
[quote author=Traveller link=1229168414/20#21 date=1231953726][quote author=Kenom link=1229168414/0#16 date=1231773369]The problem is that the technology for high powered 635nm diodes just wasn't as necessary as that for 660nm diodes...
Click to expand...
From what I understand they are all based on AlGaInP and that 635nm is the lower limit... .

What I have yet to figure out is why they even bother with 635nm - meaning, what advantages does this wavelength really have over 650, for example? In terms of visibility, there's no comparison with, say, a 532nm laser of the same power level, so why do some vendors still offer such wavelengths?
[/quote]

Very true! I, like most other laser hobbyists, want a complete spectrum of laser pointers. 635nm can be differentiated from 650nm when comparing them side by side.

Since higher powers are more elusive at 635nm, does anyone know of a for sure source of 635nm 5mW laser pointers? Other companies I have seen advertise them at 630-660nm, or I just don't trust that they take care in advertising the true wavelength and just call it red.

Thanx
-Tony[/quote]
Get the 635nm pointer from either atlasnova or Z-bolt
 
Cyparagon

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They are 2-3mW, by the way.

Traveller said:
What I have yet to figure out is why they even bother with 635nm - meaning, what advantages does this wavelength really have over 650, for example? In terms of visibility, there's no comparison with, say, a 532nm laser of the same power level, so why do some vendors still offer such wavelengths?
Click to expand...

It's not just about visibility. It's the brightest red available. You can't have a white light projector without a red line.
 
Xplorer877

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Cyparagon said:
It's the brightest red available.
Click to expand...

Exactly the reason I want one. 5mW seem to be cheaper and buying one from Z-bolt or Atlasnova is easier then than going through that whole order process through Roithner. :p And their 30mW prices are kinda steep. :-/

-Tony
 
RA_pierce

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Traveller said:
[quote author=Kenom link=1229168414/0#16 date=1231773369]The problem is that the technology for high powered 635nm diodes just wasn't as necessary as that for 660nm diodes...
Click to expand...
From what I understand they are all based on AlGaInP and that 635nm is the lower limit... .

What I have yet to figure out is why they even bother with 635nm - meaning, what advantages does this wavelength really have over 650, for example? In terms of visibility, there's no comparison with, say, a 532nm laser of the same power level, so why do some vendors still offer such wavelengths?
[/quote]


Possibly as a solid state, more compact alternative to HeNes? They are similar in wavelength +- a few nm.

Dunno. I'm sure there is/was a purpose other than as a novelty item for hobbyists.

Maybe you can push the 10mW diodes a little harder and get a few more mW out of them. ;D
 
Cyparagon

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It's still a toss-up for me between 660 and 635. You need three times the power of a 660 to equal the brightness, but it's also 1/3 the price. Beam specs are similar (except at medium power) as well.
 
Raybo

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Kenom said:
The problem is that the technology for high powered 635nm diodes just wasn't as necessary as that for 660nm diodes so you won't see any "diodes" of real high power for cheap.  Anything that goes over say 100mw is going to be a DPSS laser and utilizes a completely different setup.  I can make a few 30mw lasers for a pretty reasonable price if your truly interested.  $100 give or take
Click to expand...


OH! :-?
 
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