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Old 01-14-2012, 03:30 AM #1
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Default Elk Ind. - Direct 401nm LD @ 400500 mW

FYI - I found this Elk Industries anouncement dated 01/09/2012 posted in LaserFocusWorld
Quote:
The Deep Violet Laser provides output radiant flux for CW diode lasers at 398–401 nm. Operating at 401 nm, it provides an output power of 400–500 mW with a power input of 2 W at 100–240 VAC and 50–60 Hz. The collimated output appears as TEM00 with a focal point of 500 μm. Applications include dye laser pumping, fluorescence lifetime studies, and spectroscopy.
Diode laser module from Elk Industries Provides 400 - 500 mW Output Power


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Last edited by madmacmo; 01-14-2012 at 05:16 AM. Reason: Elk Ind. - Title Change


Newport 6 Power Meter Head Test Bench - Coherent LPM Sensor?
http://web.archive.org/web/201310101...sor-70740.html
Anyone familiar with Coherent laser power detector heads?
Newport 6 Power meter heads and test bench for 6 High Power CCP laser diodes | eBay
Quote:
The detectors on the heads have Coherent Cir. boards inside. So I'm assuming these are Coherent detectors
If these are anything similar to Ophir sensors in performance and value, then the eBay BIN price of US $199.95 for six of these guys may be a bargain.



Close up of individual sensor


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Old 01-14-2012, 04:17 AM #2
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

Heh you can always spot editorializations.

Quote:
and LASER Diode Input of 393 milliamps at 5 volts, D.C., for full Output Power
That is some sweet efficiency - 500mW @ 393mA.

The only thing in wondering is are the std 405nm diodes really 405, if so 3nm lower isn't much of a breakthrough.

The article did mention pumping Rhodamine 590... Now THERE is an idea!
Quote:
Mr. Robin Elkins, has already achieved High Power CW Direct Diode LASER pumping of Rhodamine 590 Chloride with the "BLUE MAXTM OEM/Laboratory LASER", which Produces a diode LASER Output of 1 Watt at 440 nm (Maximum).
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Old 01-14-2012, 04:26 AM #3
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

This is fascinating D: Really powerful, further UV laser diodes.
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Old 01-14-2012, 04:32 AM #4
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

Its says they are for sale but I cant find them anywhere on the ELK site.
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Old 01-14-2012, 05:14 AM #5
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

Here's the direct link: Red LASER, Blue Laser, Pulsed Infrared Laser
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Old 01-14-2012, 05:26 AM #6
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

We need a link to buy these diodes. It said immediate release, but there are no buy options.
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Old 01-14-2012, 05:31 AM #7
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

There's no purchase links for anything from ELK it appears. All products redirect to the contact page with instructions to inquire there. At the very bottom of a page it says that "ELK Industries, Inc. is not an Active Corporation". I'm not exactly sure what that means.
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Old 01-14-2012, 05:38 AM #8
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

Makes sense why I cant find it.

To the Bat Phone!!


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Old 01-14-2012, 05:42 AM #9
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

Haha, excellent! That seriously made me laugh irl. Please let me know how it turns out if you get any answer. PM me the price if you have to, hehe. If these diodes are actually 398-401nm this will be awesome. I have a sinking feeling they're just 405nm diodes though...
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Old 01-14-2012, 06:42 AM #10
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

What power can you get out of a 12x bluray diode?

These are what 25% efficient, how efficient is a bluray diode?
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Old 01-14-2012, 06:51 AM #11
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

Can I ask a stupid question?

- How are these functionally any more interesting than common 12x diodes?

The efficiency sounds normal to me. 393mA for 500mW out is a ratio that is pretty much dead-on the ratio we might see in a 12x (500mA in, for say 650mW out). The wavelength (401nm) is what you might see from a 12x. Just like 445s, they all vary a bit, and 401 would be normal for a 12x.

In fact, is ELK even making this diode themselves? I've read their press releases before, and I was often left with the impression that they were just reselling Nichia parts. They sure love their press releases.
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Old 01-14-2012, 03:33 PM #12
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

Quote:
Originally Posted by Sigurthr View Post
The only thing in wondering is are the std 405nm diodes really 405
It depends on the diode and how hard you run it. low current could be 403nm while high current can be up to 418nm. 408nm is my guess for an average. I doubt you will see any color difference between 410 and 400nm, although the brightness is sure to suffer. I wouldn't trust this site. In my experience, weird specs have generally meant something is wrong.

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Old 01-15-2012, 03:37 AM #13
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

Yeah, that's what I was afraid of. 398nm would be a nice wavelength for the collection, but more and more these appear to just be another 405 with false advertising. The price would be everything though, perhaps ELK sells them cheaper than it is for us to harvest these diodes from drives?

I didn't realise our 405's could get up to 418nm, that is interesting! I wonder if we would see a difference in color between 398nm and 418nm.
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Old 01-15-2012, 03:53 AM #14
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

I doubt ELK would be cheaper. I'd put my money on them being MUCH more expensive than harvesting.
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Old 01-15-2012, 04:03 AM #15
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

well... we do have a member living in Melbourne that is vet and could perhaps shed some light on ELK and thier diodes. nice that lpf is everwhere. I will contact Mitch and see what he says.
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Old 01-15-2012, 01:13 PM #16
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Default Re: Elk Ind. - Direct 401nm LD @ 400500 mW

Yes, I know him personally. He is a very odd gentleman. He is just speaking of the A140 diodes. His dreams are greater than his achievments. Mitch
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