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Old 03-30-2011, 02:23 PM #17
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Default Re: Max output for a 635 nm laser, while affordable?

How can a laser not look like a laser?


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Old 03-30-2011, 03:13 PM #18
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Default Re: Max output for a 635 nm laser, while affordable?

Quote:
Originally Posted by rhd View Post
How can a laser not look like a laser?
Very easy. Look at a multi mode 635 at 15 meters. You have these stripes with gaps between them. And everything is square. Besides the laser speckle we all know, the beam could pass for a high power "collimated" LED.

I'm not knocking high power 635. I'm sure good quality ones are available. But the $700 types are useless. I just hate for a LPF user to buy one thinking they buying an awesome red laser. I made the mistake. They are HORRIBLE!! Only if you intend to use it within 3 meters are they acceptable.

Just my views....
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Old 03-30-2011, 04:05 PM #19
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Default Re: Max output for a 635 nm laser, while affordable?

I'm breaking the bank for an HL63133DG (mostly to heal the hole in my heart caused by the recent sale of my C-Mount 635 )

At any rate, you said to show you an affordable high power single mode 635. At the price of 3x 445s, it's perhaps not ultra "affordable", but it's probably on par with the price many here were paying for early 12x 405nm diodes a year or so ago?
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Old 03-30-2011, 04:36 PM #20
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Default Re: Max output for a 635 nm laser, while affordable?

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Originally Posted by rhd View Post
I'm breaking the bank for an HL63133DG (mostly to heal the hole in my heart caused by the recent sale of my C-Mount 635 )

At any rate, you said to show you an affordable high power single mode 635. At the price of 3x 445s, it's perhaps not ultra "affordable", but it's probably on par with the price many here were paying for early 12x 405nm diodes a year or so ago?
Thorlabs.com - HL63133DG 637 nm, 170 mW, 5.6, G Pin Code, Opnext Laser Diode
$380 for 170mW. Ok. If you think thats a good price I won't argue.
I may be power hungry and enjoy lasers with higher power output ie: mw to $ ratio, but I know some guys enjoy centain wavelengths like to 473 blue with is also highly priced (the tech in the laser is much more sophisicated than a red diode so it's kinda understandable)

If they were priced at around $50 I'd be the first to buy two and merge them
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Old 03-30-2011, 04:48 PM #21
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Default Re: Max output for a 635 nm laser, while affordable?

Right - I didn't buy from that site you pulled up though. I paid much less than that price.

I paid less than most people pay for a built 445nm laser pointer, and I'll have a final product built for about the same total. (Won't be nearly as amazing as a 300mW would have been though)

However, 170mW of 635 is equivalent in perceived brightness to more than 2 LOC reds. Single mode, affordable (at least for anyone who would consider a $200 445 affordable) - seems like a good thing to me. Time will tell.
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Old 03-30-2011, 05:00 PM #22
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Default Re: Max output for a 635 nm laser, while affordable?

it seems like people are always trying to compare apples to oranges with the 635 and the 660s.

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Old 03-30-2011, 05:04 PM #23
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Default Re: Max output for a 635 nm laser, while affordable?

Why is that apples to oranges?

They're similar but not identical wavelengths, both are available from diode lasers, and both come at powers reasonable visible, and yet within the reach of hobbyists.

I think it's a bit more like comparing Mandarins and Tangerines
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Old 03-30-2011, 07:11 PM #24
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Default Re: Max output for a 635 nm laser, while affordable?

i think people want the best of both worlds. this is a laser community. get both lol....

i guess that is a better way to put it hee-hee
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Old 03-30-2011, 07:25 PM #25
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Default Re: Max output for a 635 nm laser, while affordable?

That HL63133DG is interesting, didn't know that it exists, thx!
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Old 03-30-2011, 07:53 PM #26
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Default Re: Max output for a 635 nm laser, while affordable?

Johnyz - I think it's about the only affordable single mode 635 diode right now that can achieve that level of power. It should look like 2 or 2.5 times the beam intensity of a 660nm running at ~300. So it's still probably not going to be a completely visible beam like a green or a blue (depending on environment of course), but it's getting closer.

Two things I don't know:

1) Whether 170mw is the true max, or the "max" the same way 1000mA is the Nichia 445nm diode's "max". If this diode can be pushed to 240 mW, we've go the equivalent brightness of a 1W 660nm.

2) What is the mW rating of the 635nm diode inside a DVR-S201. I'm presuming that is single-mode.
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Old 03-30-2011, 09:05 PM #27
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Default Re: Max output for a 635 nm laser, while affordable?

>700mW of 635nm in handheld costs $1200
Someone should jump on this
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Old 03-30-2011, 10:05 PM #28
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Default Re: Max output for a 635 nm laser, while affordable?

Jump on the 170mw HL63133DG I am ordering?

Or is there another lead I missed in here?
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Old 03-31-2011, 06:53 AM #29
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Default Re: Max output for a 635 nm laser, while affordable?

Quote:
Originally Posted by rhd View Post
Jump on the 170mw HL63133DG I am ordering?

Or is there another lead I missed in here?
Sorry, I talked about the CNI 750mW diode in Herc host.
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445nm >> Kryton Smooth by lazeerer peak@2075mW
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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 04-01-2011, 08:37 PM #30
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Default Re: Max output for a 635 nm laser, while affordable?

Hey rhd, over on pl I was looking around, and here's what I've come up with
I ordered one btw, but the HL63133DG is 170mW at 250mA at 637nm
And they have safely pushed it to ~300mA 200mW and 639nm very safely/easily!
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Old 04-01-2011, 08:47 PM #31
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Default Re: Max output for a 635 nm laser, while affordable?

Hey Jake,
Awesome, you got one too! Mine will be here Thursday.
At 200mW and 639nm, it should look like a bit more than 2x LOCs:
Beam: (660nm 684.52mw) vs. (639nm 200mw)

I wonder if it can be pushed further, but nobody has tried on account of cost?
Is there a "safe-ish" way to test the limits?

Once life settles down this summer, I'd consider doing a GB for these.
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Old 04-01-2011, 09:15 PM #32
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Default Re: Max output for a 635 nm laser, while affordable?

Is the GB at PL on the 638 170mW still going on? Either way, how much ate we looking at if I want to get in on that?

As far as the DVR-S201 goes, I may have an extra one soon that can be sacrificed; but what I'm betting due to its slow speed is the same 40mW sanyo diodes we saw recently; but I'll find out.
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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW
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