Old 07-16-2010, 06:06 AM #1
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Default Nichia to Ship Green Diode Laser

Quote:
Nichia to Start Sample Shipment of Green Diode Laser

Jul 8, 2010 - Tadashi Nezu, Nikkei Electronics

Nichia Corp will finally commercialize its green diode laser for use mainly in pico projectors.

The oscillation wavelength of the laser is 510nm, which is a little short for green color. But the company claims that the laser looks green.

Nichia has been engaged in the development of a diode laser that directly emits green light. But this is the first time that the company will commercialize it. Nichia will start sample shipment in August 2010, aiming to start volume production in the summer of 2011.

Currently, most of the green diode lasers commercialized for display devices convert the wavelength of infrared laser light by using SHG (second harmonic generation). In other cases, some green diode lasers convert the wavelength of blue laser light by using fluorescent materials.

Because the new diode laser directly emits green light, it may reduce the sizes of pico projectors and costs.

The optical output of the green diode laser is 50mW when driven at 200mA and 5V (case temperature: 25°C). The life of the laser (the time until its current increases to 1.3 times the initial current value) is estimated to be 10,000 hours if it is used at the optical output of 50mW and at a constant output (APC) under continuous operation (case temperature: 60°C,).
The color has a little more blue than I would like ...
but direct green diodes are here.

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Old 07-16-2010, 06:22 AM #2
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Default Re: Nichia to Ship Green Diode Laser

wow now we got the blues now we got green very good indeed.
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Old 07-16-2010, 06:28 AM #3
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Default Re: Nichia to Ship Green Diode Laser

Blue/Green laser diodes sounds pretty good to me I can think of all kinds of cool things to make
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Old 07-16-2010, 08:26 AM #4
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Default Re: Nichia to Ship Green Diode Laser

It may not be as green as it could be but its a start.
Now I'm hoping demand quickly pushes production high & prices down! Pico projectors in every cell phone now!
Also this was posted in Nichia begins sample shipments of green semiconductor lasers
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Old 07-16-2010, 11:27 AM #5
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Default Re: Nichia to Ship Green Diode Laser

Seriously, when I'm running my 515 ArIon green -- you really have to kind of "look hard" to find a hint of cyan. It's really green. Sure, 510 is just a little bit less so but it's not going to be like 488 or anything. Next to a 445 it'll look green as grass.
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Old 07-17-2010, 12:32 PM #6
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Default Re: Nichia to Ship Green Diode Laser

Thanks for posting that! I'm thinking of all the multiline colors available from an argon laser. Are we finally going to get that argon laser look for peanuts, compared to the heavy duty cooling and current needs of an argon? Just kidding really, the argon laser is one beautiful beast.
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Old 07-17-2010, 03:28 PM #7
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Default Re: Nichia to Ship Green Diode Laser

Anyone know how many of these will be in a projector? Or just one? Thanks for all the above posts. So.... how soon Yellow at affordable price? prolly never as is asaik is not needed in a projector.
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Old 07-17-2010, 03:47 PM #8
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Default Re: Nichia to Ship Green Diode Laser

One thing to remember is, even though 510 might look green, it's not gonna be as bright as 532nm. In photopic vision 510nm should be about as bright as yellow lasers (about 590nm).
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Old 07-17-2010, 04:49 PM #9
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Default Re: Nichia to Ship Green Diode Laser

Even though its not as green as a 532nm laser, i still think this color is gonna look awesome coming out of diode.
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Old 07-19-2010, 06:29 AM #10
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Default Re: Nichia to Ship Green Diode Laser

Sure hope we find a goldmine source of these like the Casio projectors, I can just imagine how extravagantly expensive these will be, even at group buy quantities...
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Old 08-03-2010, 04:40 PM #11
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Default Re: Nichia to Ship Green Diode Laser

This sounds extremely promising. Any new visible wavelength of laser diode is a significant plus in my book!

With any luck they will at some point enter into the realm of affordability for hobbyists like ourselves!

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Old 08-03-2010, 06:15 PM #12
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Default Re: Nichia to Ship Green Diode Laser

Wow... I wanna know what kind of beam specs they've got?
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Old 08-05-2010, 02:03 AM #13
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Default Re: Nichia to Ship Green Diode Laser

It's August now! Where's our 510nm diodes?
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Old 08-05-2010, 02:31 AM #14
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Default Re: Nichia to Ship Green Diode Laser

They probably won't be anywhere near as strong as the 445s, which sucks...

I got to compare 445 to 473 today, and 445 looks purpleish next to 473. The 515 line in an argon defiantly stands out as green though, I actually prefer it to 532. Some say 635 looks orange when next to 660, but it always looks red to me.
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Old 08-05-2010, 04:23 AM #15
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Default Re: Nichia to Ship Green Diode Laser

Honestly, I'm ok with them not being anywhere near as strong. Less chance of another "Craze". After the gadget crowd got a taste of 1W, they won't see the value in 510nm green. We will though... 100mW would be fine for me.
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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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Default Re: Nichia to Ship Green Diode Laser

Sadly though, since 50mw is the expected operating output, it's not really possible to get higher than that with this wavelength at the time of its release (I mean, drive it harder but...). Not that it's needed, 50mw is great for viewing

A very nice addition for those of us that can't get enough of the spectrum! We keep getting these summer gifts, it seems
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