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Old 07-29-2015, 07:14 PM #1
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Default Yellow Laser So Expensive??

HI I was wondering why are yellow lasers so expensive?? I would love to own one but looking at the prices I see that they are out of my price range.


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Old 07-29-2015, 07:17 PM #2
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Default Re: Yellow Laser So Expensive??

Crystals & Lack of real-world applications

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Old 07-29-2015, 07:39 PM #3
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Default Re: Yellow Laser So Expensive??

I have wondered the same. That makes sense, not a lot of application in the real world for them. Would be nice at some point to see yellow diodes available, at a reasonable price, so we can build custom yellow handhelds as we see fit.
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Old 07-29-2015, 09:20 PM #4
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Default Re: Yellow Laser So Expensive??

there isn't much use for them in all honesty and as Lehap said crystals!
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Old 07-29-2015, 11:08 PM #5
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Default Re: Yellow Laser So Expensive??

The above post are the short answers---is not only that but they are very tricky to make involving a complex process and not very efficient --like 1% or thereabouts--- low output for high input energy thus expensive to make.Currently only CNI in China make battery powered yellow handheld lasers

" Yellow laser pointers emitting at 593.5 nm became available in recent modern times.. Although they are based on the DPSS process, in this case two lasing lines of the ND:YVO4, 1064 nm and 1342 nm, are summed together with a nonlinear crystal. The complexity of this process makes these laser pointers inherently unstable and inefficient, with their outputs ranging from 1 mW to about 10 mW, greatly varying with temperature and usually mode-hopping if they get too hot or too cold. That is because such a complex process may require temperature stabilizers and active cooling, which can't be mounted into a small sized host. Also, most smaller 593.5 nm pointers work in pulsed mode so they can use smaller and less powerful pumping diodes. New 589 nm yellow laser pointers have been introduced using a more robust and secretive method of harmonic generation from a DPSS laser system. This 'sodium' wavelength, although only 4.5 nm away from the older 593.5 nm, appears more gold in colour compared to the more amber appearance of the 593.5 nm wavelength. Astronomical observatories use a specially tuned dye laser at 589.2 nm (yellow) to create a Laser Guide Star for use with astronomical adaptive optics" from: https://en.wikipedia.org/wiki/Laser_pointer

There are some great pictures of yellow lasers used for Astronomical research purposes -- Yellow lasers are used to create an artificial star by shining a laser into the atmosphere!! see: Encyclopedia of Laser Physics and Technology - laser guide stars, sodium beacon, adaptive optics, atmospheric correction, astronomy, artificial guide star
See some pictures of yellow laser guide star creation at bottom of page here : https://en.wikipedia.org/wiki/Laser_guide_star

Pretty amazing, yes??

Last edited by Encap; 07-30-2015 at 06:54 AM.
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Old 07-30-2015, 03:58 AM #6
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Default Re: Yellow Laser So Expensive??

All we have to do is convince a company like IBM, Apple or Samsung that a yellow diode must be used in their next model to create a real world demand and Ta-Da Yellow laser diodes for all
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Old 07-30-2015, 06:31 AM #7
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Default Re: Yellow Laser So Expensive??

Quote:
Originally Posted by Encap View Post
The above post are the short answers---is not only that but they are not tricky to make involving a complex process and not very efficient --- low output for high input energy thus expensive to make.Currently only CNI in China make yellow hand helds
not entirely true. a few places make yellow at request. they're just not the norm. but indeed they are far more complex.

Quote:
Originally Posted by Encap View Post
Yellow laser pointers emitting at 593.5 nm became available in recent modern times.. Although they are based on the DPSS process, in this case two lasing lines of the ND:YVO4, 1064 nm and 1342 nm, are summed together with a nonlinear crystal. The complexity of this process makes these laser pointers inherently unstable and inefficient, with their outputs ranging from 1 mW to about 10 mW, greatly varying with temperature and usually mode-hopping if they get too hot or too cold. That is because such a complex process may require temperature stabilizers and active cooling, which can't be mounted into a small sized host. Also, most smaller 593.5 nm pointers work in pulsed mode so they can use smaller and less powerful pumping diodes. New 589 nm yellow laser pointers have been introduced using a more robust and secretive method of harmonic generation from a DPSS laser system. This 'sodium' wavelength, although only 4.5 nm away from the older 593.5 nm, appears more gold in colour compared to the more amber appearance of the 593.5 nm wavelength. Astronomical observatories use a specially tuned dye laser at 589.2 nm (yellow) to create a Laser Guide Star for use with astronomical adaptive optics" from: https://en.wikipedia.org/wiki/Laser_pointer

Some great pictures of yellow lasers used for Astronomical research purposes -- Yellow laser used to create an artificial star by shining a laser into the atmosphere!! see: Encyclopedia of Laser Physics and Technology - laser guide stars, sodium beacon, adaptive optics, atmospheric correction, astronomy, artificial guide star
Some great pictures of yellow laser guide star creation at bottom of page here : https://en.wikipedia.org/wiki/Laser_guide_star

Pretty amazing, yes??
good job!
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Last edited by ultimatekaiser; 07-30-2015 at 06:31 AM.
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Old 07-30-2015, 06:33 AM #8
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Default Re: Yellow Laser So Expensive??

Quote:
Originally Posted by ultimatekaiser View Post
not entirely true. a few places make yellow at request. they're just not the norm. :
He was talking about yellow handhelds friend

-Alex
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Old 07-30-2015, 06:36 AM #9
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Default Re: Yellow Laser So Expensive??

Quote:
Originally Posted by LeHap View Post
He was talking about yellow handhelds friend

-Alex
Ah. but still, I think they were the first widely known, large business to sell them, I don't think they're the only one though. I believe I've seen a couple companies sell them. as well as parts for them.
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375nm: Melles Griot RCS-007

405nm: Melles Griot RCS
430nm: Coherent D3 430-10
441.6nm: Omnichrome 2056-M-A01/4074-P-A03 HeCd laser
457.9nm: Argon Ion Line

472nm Omni-643RYB Whitelight Line
473nm: CNI MGL-473-100, CNI GLP-473
476.5nm: Argon Ion Line

483nm Omni-643RYB Whitelight Line
488nm: Argon Ion Line, Spectra Physics >20mW Cyan DECSL Laser, Coherent Sapphire 488-20 OPSL

496.5nm: Argon Ion Line
501.7: Argon Ion Line
514.5nm: Argon Ion Line
520nm: Trustfire A8 Custom

532nm: CNI MGL-F-3W, Coherent Genesis MX Taipan OPSL, LG Hercules-325
543.5nm: 05-LGR-193 Melles Griot HeNe 3.8mW
Melles Griot LGB-563 HeNe

561nm: Melles Griot 85-YCA-015, Coherent Sapphire 561-20
568nm: Omni-643RYB Whitelight Line

577nm: Coherent Genesis MX Taipan OPSL
583.8nm: DPSS line
586.2nm: DPSS line
588.6nm: CNI PGL-M-80

591nm: DPSS line
593.5nm CNI MGL-H-50 Lab Laser
594.1nm: Coherent 31-2230-000 (4.5mW)

604.6nm: LOR-150 HeNe line
609nm: Raman HeNe line?
611.8nm: Melles Griot LOR-150 HeNe (5mW), LOR-006 HeNe (0.5mW)

632.8nm: Spectra Physics Model-127 (>35mW), Model-124B, Model-120, Model-117, others
Melles Griot LHB-580, LHB-190, WHR-570

641nm: Melles Griot RCS
647nm: Omni-643RYB Whitelight Line
659.6nm: Laser Quantum IGNIS DPSS laser 0.5W

671nm: CNI PGL-III-C-100
676nm: Omni-643RYB Whitelight Line
690nm: custom diode laser
694nm: Portable Q-switched Ruby Laser

1152.6nm: SP-120 HeNe alt. mirrors
1523.5nm: Melles Griot LIR-151 HeNe
3391nm: SP-124 alt. mirrors
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Old 07-30-2015, 06:51 AM #10
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Default Re: Yellow Laser So Expensive??

Quote:
Originally Posted by ultimatekaiser View Post
Ah. but still, I think they were the first widely known, large business to sell them, I don't think they're the only one though. I believe I've seen a couple companies sell them. as well as parts for them.
Interesting, thanks for letting me know!

-Alex
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635nm: Generic "Laser Pointer" Pen 5mW
593.5nm: LaserGlow Rigel-2 3mW
532nm: Z-Bolt BTG-6-C 5mW
515nm: Generic "Laser Pointer-515P-10" Pen 12mW
473nm: CNI GLP-473 6mW
450nm: Z-Bolt BLP-5-S Pointer 6mW
405nm: Generic "Laser Pointer" Pen 35mW



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"The stars should fall and the earth be riddled, imagine all your problems be seem so little, funny how the world so brittle." -Tribal Seeds
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Old 07-30-2015, 11:50 PM #11
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Default Re: Yellow Laser So Expensive??

Quote:
Originally Posted by Encap View Post
The above post are the short answers---is not only that but they are very tricky to make involving a complex process and not very efficient --like 1% or thereabouts--- low output for high input energy thus expensive to make.Currently only CNI in China make battery powered yellow handheld lasers

" Yellow laser pointers emitting at 593.5 nm became available in recent modern times.. Although they are based on the DPSS process, in this case two lasing lines of the ND:YVO4, 1064 nm and 1342 nm, are summed together with a nonlinear crystal. The complexity of this process makes these laser pointers inherently unstable and inefficient, with their outputs ranging from 1 mW to about 10 mW, greatly varying with temperature and usually mode-hopping if they get too hot or too cold. That is because such a complex process may require temperature stabilizers and active cooling, which can't be mounted into a small sized host. Also, most smaller 593.5 nm pointers work in pulsed mode so they can use smaller and less powerful pumping diodes. New 589 nm yellow laser pointers have been introduced using a more robust and secretive method of harmonic generation from a DPSS laser system. This 'sodium' wavelength, although only 4.5 nm away from the older 593.5 nm, appears more gold in colour compared to the more amber appearance of the 593.5 nm wavelength. Astronomical observatories use a specially tuned dye laser at 589.2 nm (yellow) to create a Laser Guide Star for use with astronomical adaptive optics" from: https://en.wikipedia.org/wiki/Laser_pointer

There are some great pictures of yellow lasers used for Astronomical research purposes -- Yellow lasers are used to create an artificial star by shining a laser into the atmosphere!! see: Encyclopedia of Laser Physics and Technology - laser guide stars, sodium beacon, adaptive optics, atmospheric correction, astronomy, artificial guide star
See some pictures of yellow laser guide star creation at bottom of page here : https://en.wikipedia.org/wiki/Laser_guide_star

Pretty amazing, yes??
Wow Thanks for the Great explanation. Maybe a few more years and hopefully they will become more affordable.
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Old 08-21-2015, 12:48 AM #12
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Default Re: Yellow Laser So Expensive??

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Originally Posted by alexisv323 View Post
Wow Thanks for the Great explanation. Maybe a few more years and hopefully they will become more affordable.
589nm is amazing my 50mw spartan just looks so beautiful. The color is exactly the same as a Low pressure sodium lamp. I heard some stuff in the news about a white laser being invented. It uses a red green and blue dioide. Engineers create world's first white laser beam | The Verge


But even then you won't have a single WL it will just be red plus green and IMO they are years away from this. Honestly i'd save up for a 589nm. It's just amazing. the first time I turned it on I was literally floored. It's not 100% yellow but not orange either. Probably the most unique WL you can see.
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Old 08-21-2015, 01:22 AM #13
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Default Re: Yellow Laser So Expensive??

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Originally Posted by VanillahGorilla View Post
I have wondered the same. That makes sense, not a lot of application in the real world for them. Would be nice at some point to see yellow diodes available, at a reasonable price, so we can build custom yellow handhelds as we see fit.




^^ that will never happen-sry

aside from all the correct reasons from others I know from AixiZ that these have a high fail rate- and since it is the policy of AixiZ to replace in some cases it became a huge PITA that made NO profits- & these were labby yellows

and once all were gone they never wanted to stock them- IIRC they were several hundred$$ usd and not a ton of mW..

To fullfill your yellow laser cravings look toward a 6 or 7mW HeNe- 300$ for tube only (=/- 100$)

Sam may have some at Sam's Laser Classifieds- his come with lifetime free repairs (but NOT replacement)

OR combine two cheap R and G and make yellow
not that hard

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Old 08-21-2015, 01:26 AM #14
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Default Re: Yellow Laser So Expensive??

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Originally Posted by hakzaw1 View Post
^^ that will never happen-sry
I wouldn't say yellow diodes will never be something we get to experience some day. While there isn't much applications which require them currently, technology today moves so quickly and made to become more energy efficient that yellow diodes may be something companies may feel valuable in the future

-Alex
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Old 08-21-2015, 02:34 AM #15
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Default Re: Yellow Laser So Expensive??

MAYBE

but dont hold your breath--

593.3 DPSSL IS expensive and unlikley to become affordable until as LC wants a 'yellow diode'

- like the ML Argon-ion inside DNA sequencers got replaced by the smaller cheaper DPSSL 473 which then got replaced by blue diode lasers-

optogenetics research is one area where yellow is needed-other research-some industrial uses but all that many uses ATM.

its not a primary color like R or B

AixiZ was getting theirs from CNI and it has been a few years sicne they stopped stocking them and it apperas that the quality has improved.



btw our 'consumption' of lasers is so small it is not even considered to be a legit 'market' and even if you add all the Show Laser uses etc is a drop in the bucket- LIA does a monthy newsletter and laser articles and all the advertizing is aimed at other laser uses- no ention of lasershow projectors annywhere.

diodes and their beam profiles duty/rest etc are NOT developed with us in mind.

The latest edition came today and there is a piece on lasershow safety- will read later and put something about it in the safety threads (Welcome section)
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Last edited by hakzaw1; 08-21-2015 at 03:17 AM.
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Old 08-21-2015, 03:09 AM #16
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Default Re: Yellow Laser So Expensive??

There is no semiconductor that bridges the yellow gap for lasers, it's not a matter of commercial need.
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