All In One RGB Laser - In Near Future - Maybe

madmacmo · 05-03-2012, 06:23 AM

Posted 05/01/2012 11:47 PDT in Ubergizmo.com
By Pradeep Chandrasekaran
Quantum Dots Used to Build RGB Laser

Quote:

. . a physicist from Brown University called Cuong Dang along with his team of researchers have managed to produce a single material that is capable of producing several different wavelengths and therefore different colors of laser light . . .

The innovation in essence is a full RGB laser and is constructed with nanoparticles called colloidal quantum dots (CQDs). CQDs are thin films that produce light via quantum excitations . . .

Dang coated the base of the CQDs which are usually made from a material called cadmium-selenium (CdSe) alloy with a second alloy that is not properly described in the papers. With the introduction of the second alloy, the electronic properties were altered and this resulted in light being created as the primary output . . .

To stimulate light emission, the researchers directed short pulses of laser onto the film which resulted in three different CQDs re-emitting the red, green and blue light wavelengths successfully. After applying a filter to remove most of the light from the original laser source, only the CQDs produced was left . . .

While this new development is not practical by itself for commercial use since it is just a laboratory prototype, it still has some refining to go through before it can make its way into devices like your Blue-ray player. Nevertheless, it is still a significant advance toward broad-spectrum lasers fabricated from a single material as opposed to using 3 separate lasers to achieve any color in the visible-light spectrum of colors.

flare09 · 05-03-2012, 05:30 PM

Hahaha blue ray players? More like high quality extremely compact projectors. Put a single diode with this tech in a phone and you have a whole projector running off a single diode and optics. And everything is subtle. Man that's awesome.

Wolfman29 · 05-03-2012, 07:05 PM

The only issue with optics is that the optics will bend each wavelength differently... so you would need three different optics. I am not sure how well this would work.

ZRaffleticket · 05-03-2012, 11:32 PM

Basically it wouldn't work well at all using current optical setups. They'd need to somehow improve efficiency with the current optics or make new optics entirely. That's why I liked the idea of having three seperate diodes in one can.

ARG · 05-05-2012, 07:35 PM

Are those sunglasses he's wearing?

They sure don't look like laser goggles!

hakzaw1 · 05-08-2012, 10:49 PM

who knows?? but he does have a swell blue glove...either that or he has been making grape kool-ade by 'hand'

Jetlasers used to offer a RGB pointer but lack of sales cause it to be dropped.

Apocalypse · 05-10-2012, 04:06 AM

http://www.youtube.com/watch?v=bNuoYm7Su4o
So the laser use quantum dots as a gain medium? Here's an interesting video.

Teslanium · 01-15-2013, 12:48 AM

Fiber lasers have demonstrated full-spectrum CW coherent output with a blue LD end-pump setup. But they are currently way more expensive than Dang's solid-state version would be. Can't wait until either one comes out in a handheld!

T.

05-03-2012, 05:30 PM	#2
flare09 Class 1M Laser Join Date: Oct 2011 Posts: 144 Rep Power: 4	Re: All In One RGB Laser - In Near Future - Maybe Hahaha blue ray players? More like high quality extremely compact projectors. Put a single diode with this tech in a phone and you have a whole projector running off a single diode and optics. And everything is subtle. Man that's awesome.

05-03-2012, 07:05 PM	#3
Wolfman29 Class 3B Laser Join Date: Jan 2011 Location: Scottsdale, AZ Posts: 3,216 Rep Power: 107	Re: All In One RGB Laser - In Near Future - Maybe The only issue with optics is that the optics will bend each wavelength differently... so you would need three different optics. I am not sure how well this would work. __________________ Personal Collection: 405nm: Kryton Groove - 400mW 445nm: Silver Blue - 2.4W - Click Here! 520nm: Silver Green - ??? - In progress! 532nm: O-like - 400mW - Rayfoss; 200mW 543nm: 1.52mW HeNe 589nm: PGL-III-C-589 - avg. 74.5mW, pk. 100mW 632.8nm: 5" HeNe Steampunk Raygun - in progress 660nm: Chrome Leadlight DIY Build - 225mW 808nm: 40W Ray Package - in progress DIY LPM! Looking for a cheap, powerful buck driver? Check out the BlitzBuck at CajunLasers! With efficiency higher than that of a linear at approximately 90%, it's the best two-cell solution on the market! /shameless plug Another shameless plug! Take a look at the BlitzLinear, also at CajunLasers! One of the lowest dropout linear drivers out there, and incredible stable!

05-03-2012, 11:32 PM	#4
ZRaffleticket Class 3R Laser Join Date: Feb 2010 Location: The Skook, Pennsylvania Posts: 1,272 Rep Power: 74	Re: All In One RGB Laser - In Near Future - Maybe Basically it wouldn't work well at all using current optical setups. They'd need to somehow improve efficiency with the current optics or make new optics entirely. That's why I liked the idea of having three seperate diodes in one can. __________________ DPSS Theoretical Wavelength Chart Thread 650nm: Skylasers PL 1W 635nm: 300mW Lazerer Rifle 589nm: CNI PGL-III-C >100mW 561nm: CNI PGL-III-C 20mW 532nm: DIY Copper 700mW 520nm: Skylasers HL 50mW 488nm: Uniphase Argon 20mW 473nm: 473nm DIY handheld "Vintage Light" \| Sold: 80mW+ Lasever Handheld 445nm: Skylasers Single Mode Pen 80mW \| 3.5W Ricktrent --Ordering-- 660nm ???mW Pen --Don't have (at all or to my standards)-- 685nm 40mW C6 671nm 100mW PGL-III-A 650nm 4W+ Ricktrent 635nm 1W Kryton 607nm 200mW 593.5nm 6mW GLP/Rigel White RGB Single Mode 450nm+520nm+635nm 488nm 10mW 405nm 800mW Silver Bullet

05-05-2012, 07:35 PM	#5
ARG Class 3B Laser Join Date: Feb 2011 Location: British Columbia, Canada Posts: 4,094 Rep Power: 251	Re: All In One RGB Laser - In Near Future - Maybe Are those sunglasses he's wearing? They sure don't look like laser goggles!

05-08-2012, 10:49 PM	#6
hakzaw1 Class 4 Laser Join Date: Apr 2009 Location: 'Deep in the Heart Of Texas..." Posts: 5,779 Rep Power: 304	Re: All In One RGB Laser - In Near Future - Maybe who knows?? but he does have a swell blue glove...either that or he has been making grape kool-ade by 'hand' Jetlasers used to offer a RGB pointer but lack of sales cause it to be dropped. __________________ REKEs (3) 500RGB, 100Mw GREEN& many bliss RG sparklers-QS/FB +Beyond-Ishow-mamba black- work in progress 2.5W RGBw 30K chi-scanners & 4W RGBw/CT 6800s HeNes-(12)R(3)G-COH-594/5 mWs-thnx DrSam AR-SL(4) JDSU-ITL-.2211-65MLQYV-MULTILINE-147mWs Ehge Black Stallion 650mWs-THNX Yobresal-dead 445nm 180mW-Mini spiro-Yob. LPMs-RadiantAlpha& Pro 5W-AixiZ SPER/Kenometer-Lite/LB1 Jetlasers 250/300/400/500mW&650nm/635m/200(345mW/235nm 25mW/635/200mW405/750 Ti-B 445/300 & 532/100 1W(4) 445sGuidesman-dtr/moh 12X Flampyro Cu SSAurora 660mWs by DTR H2o proof 40mWAixiZ Spacelas 1178mW 655nm/AixiZ 300mW 532& 2 B&W 473nm 5/6mW lab JETLASER 1.3W lab 638 180mW ttl mimi lab (av. 230mW) 405 100mW ttl mini lab 445 300 mW ttl mni lab ^AixiZ^ all for a lumia PJ Guide to DIY Pjs by Dan- http://nqlasers.com/scannerreference...itle=Main_Page

05-10-2012, 04:06 AM	#7
Apocalypse Class 1M Laser Join Date: Sep 2011 Location: Vancouver, Canada Posts: 158 Rep Power: 10	Re: All In One RGB Laser - In Near Future - Maybe http://www.youtube.com/watch?v=bNuoYm7Su4o So the laser use quantum dots as a gain medium? Here's an interesting video. Last edited by Apocalypse; 05-10-2012 at 09:03 AM.

01-15-2013, 12:48 AM	#8
Teslanium Class 1M Laser Join Date: Feb 2012 Location: California USA Posts: 104 Rep Power: 3	Re: All In One RGB Laser - In Near Future - Maybe Fiber lasers have demonstrated full-spectrum CW coherent output with a blue LD end-pump setup. But they are currently way more expensive than Dang's solid-state version would be. Can't wait until either one comes out in a handheld! T. __________________ Current lasers: 594.1nm 1mW HeNe from Particle Measuring Systems Various 532nm pointers 532nm 200mW Optotronics pointer 532nm 500mW "Optotronics Viasho GB" 650nm 150mW "Senkat" 460nm 100mW (84mW peak) Skylaser GB DPL 405nm 400mW (499mW peak) Skylaser GB DPL Non-operating: 632nm 20mW multimode Melles Griot HeNe Multiline 20-80mW aircooled Ar-Ion "That's WAY* too bright!" "Yep... and your point is...?'"* Teslanium is the poster formerly known here as Ragnarok. Last edited by Teslanium; 01-15-2013 at 12:50 AM.

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