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Old 08-13-2017, 08:38 PM #1
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Default CNI GLP-577: The World's First Yellow Laser Pointer

A true yellow laser has always been on my want list alongside with cyan laser, luckily I managed to score the later but the former is almost impossible for a hobbyist. When 561nm became available, I was pretty excited thinking it will be yellow until I got one. It's too green and it only looks yellow in limited situations.

The next available wavelength in the spectrum is 589nm. It's too golden to be yellow yet many people call it yellow which surprises me.



According to wavelength tools, the range of 576nm-583nm will yield banana yellow with 580nm being the yellowest.








I've never heard of commercially available lasers at 580nm but the very next available yellow wavelength is 577nm. It is produced by Coherent in OPSL form with very high powers in bulky units with prices of at least $20k. Not the average laser of LPF member.


CNI added 577nm to their line almost a year ago but I never bothered to ask for a portable version because I know the answer will be simply no. I asked before for 458nm, 480nm , 491nm, 501nm, 607nm and the answer has always been the same so it is unlikely they are going to put their so new wavelength into a pointer.



Recently CNI built the sharp 502nm for me and I decided that it wont hurt to ask about 577nm. Three days later and still no word, I told myself it is such a ridiculous idea that they ignored me.

The next morning an email from CNI telling me that they have been testing the module and they can put it into GLP. I'm in bed and barely awake so I had to read that email few times to fully digest it. My best hope was a PGL and they are offering me a GLP ? This must be a dream !

I had to negotioate the price since it was ludicrous. The new price is still high but this is one time opprtunity and I had to take it.




CNI claims DPSS process which makes it the first 577nm DPSS in the market but what is the process they are using ?

I did some research into this and spent few hours looking for an answer, I found three options of producing 577nm in DPSS process.

1) Sum Frequency Generation of 1030nm and 1319nm, complicated setup and require 2 different pump diodes. Also reported to produce limited power of tens of milliwats.



2) Frequency doubling of 1154nm from Yb doped fiber, unlikely given that whole thing can fit a GLP.

3) Dy3+ doped crystal pumped by UV/Blue diode, different sources report that Dy doped crystals emit yellow lines at 575-580nm depneding on the crystal compostion when excited by UV/Blue light. The center of excitation bands are 325, 352, 366, 389, 427, 453 and 474 nm.
Also CNI states a tolerance of ฑ2nm on the specsheet which agrees with reported lasing lines from literature.






So lets get into the review

CNI received my payment on 2nd of August , shipped by DHL on the 10th and arrived on the 13th, 2 days earlier than the ETA However CNI declared the real value on the airway bill so I paid $120 on customs duties.


The usual cardboard box.




All GLPs come with this sticker showing the wavelength and serial number



Also CNI ships the laser with ND filter installed on the aperture as a precaution to make their lasers <1mW just in case any legal issue raises with customs, they include extra aperture cap without ND filter.



This one takes only 1xCR2 battery



Yellow photons !



The color is exactly what I was expecting, just pure yellow with no tint of green or orange.




This one rated at 5mW, it starts at 5-7mW and decreases to 1-2mW. It falls below 1mW if recommended duty cycle is exceeded. The output is pulsed just like their 473nm and 589nm GLPs.

This LPM graph is for a cold start



And this one after few minutes cool down



This laser definitely like to operate in cold environment. The body gets fairly warm after 1 minute.


The beam quality on this is outstanding, I can safely say it has the tightest beam I have ever seen on a laser with <1mm at aperture and around 23mm at 25m. Absolutely clean circular dot. Keep in mind this GLP has the same assembly as the lab units.

This video shows the dot at 25m




Can't take decent beam shots because the output drops quickly before I can find the perfect settings.

All pictures are directly from my Canon 600D, no color corrections are done unless mentioned .





Next to 589nm, the 577nm is a little bit shaky here.



561nm , 577nm, 589nm

Note these 2 pictures are partailly color corrected to show the 561nm correctly because the camera picks it too green.






Reflections on glass sphere

561nm (color corrected)



577nm





589nm



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Old 08-13-2017, 08:49 PM #2
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Wow!! georgeous electric yellow color! the difference between 577 and 589 is insane. awesome laser, i think youre the only one here who has one of these in a portable! +rep when i can because rep dont work on mobile how many thousands did this thing cost you??
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Old 08-13-2017, 08:50 PM #3
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Wow, nice looking pointer. How much did it set you back? Those tax/duty charges are a pain... I've had my fair share of them.

Nice looking pen host too, are those pieces gold plated by any chance?
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Old 08-13-2017, 09:01 PM #4
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

WHAT!!!!!!!!!!!!!!!!!!!!
That's epic.

EDIT: At CLEO this past May I saw CNI's booth and they had a 577nm Lab unit running I got to talk to their rep who told me there 577nm lasers were DPSS. But would not devolve how it was produced.
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Old 08-13-2017, 09:02 PM #5
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Whoa. I didn't expect this happening so soon...

Guess I need one now. Too bad my budget is shot now that I've been catching up on wavelengths.

In low densities of light, is this greenish or still yellow? Kind of like how 488 looks greener as you stray from the spot?
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Old 08-13-2017, 09:08 PM #6
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

This is going to break your heart, Dr.Laser. But, I was talking with UltimateKaiser several days ago and he has on of these 1 watt 577nm lasers. He was able to take the head apart and show me how the optical path works. It was fascinating. The 808nm diode package is in the bottom and is directed up at 45 degrees to the various crystals and on to the LBO. The HR and OC mirrors are not at plane parallel to each other. I think the whole system was ~$30,000.
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Old 08-13-2017, 09:10 PM #7
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Oh. My. God. That is utterly amazing sir! Congratulations! Must have been like Christmas morning when that thing arrived, and like *** when you turned it on! Such a true yellow now in a portable. I am also curious as to the price, or at least what they quoted you if you're uncomfortable telling us the price you've obtained it for.
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Old 08-13-2017, 09:16 PM #8
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Unique GLP pointer for sure---Lucky to get it---CNI has told other people 577nm is not available in a hand held
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Old 08-13-2017, 09:32 PM #9
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Quote:
Originally Posted by Merpie101 View Post
Wow!! georgeous electric yellow color! the difference between 577 and 589 is insane. awesome laser, i think youre the only one here who has one of these in a portable! +rep when i can because rep dont work on mobile how many thousands did this thing cost you??
The difference is crazy, actually 589nm looks orange next to 577nm.

Quote:
Originally Posted by ElectricPlasma View Post
Wow, nice looking pointer. How much did it set you back? Those tax/duty charges are a pain... I've had my fair share of them.

Nice looking pen host too, are those pieces gold plated by any chance?
This one cost me so much, almost as much as the cost of the lab unit.
Those GLPs are my favorite, high quality and classy looking. For the gold plating, I'm not sure about it.

Quote:
Originally Posted by lazerman121 View Post
WHAT!!!!!!!!!!!!!!!!!!!!
That's epic.

EDIT: At CLEO this past May I saw CNI's booth and they had a 577nm Lab unit running I got to talk to there rep who told me there 577nm lasers were DPSS. But would not devolve how it was produced.
We won't know unless we take one apart

Quote:
Originally Posted by ZRaffleticket View Post
Whoa. I didn't expect this happening so soon...

Guess I need one now. Too bad my budget is shot now that I've been catching up on wavelengths.

In low densities of light, is this greenish or still yellow? Kind of like how 488 looks greener as you stray from the spot?
It would fit nicely in your collection.
It's pretty solid yellow in every lighting condition. Strangly it looks 561nm on my iphone camera.

Quote:
Originally Posted by paul1598419 View Post
This is going to break your heart, Dr.Laser. But, I was talking with UltimateKaiser several days ago and he has on of these 1 watt 577nm lasers. He was able to take the head apart and show me how the optical path works. It was fascinating. The 808nm diode package is in the bottom and is directed up at 45 degrees to the various crystals and on to the LBO. The HR and OC mirrors are not at plane parallel to each other. I think the whole system was ~$30,000.
I've noticed that on his sig but he never showed it in action. That price is enough to break my heart. Too bad it's not portable lol.


Quote:
Originally Posted by Ricker View Post
Oh. My. God. That is utterly amazing sir! Congratulations! Must have been like Christmas morning when that thing arrived, and like *** when you turned it on! Such a true yellow now in a portable. I am also curious as to the price, or at least what they quoted you if you're uncomfortable telling us the price you've obtained it for.
I was so afraid that customs would mess with me, it was such a relief when the tracking updated with customs clearance. Couldn't believe my eyes when I got my hands on it


Quote:
Originally Posted by Encap View Post
Unique GLP pointer for sure---Lucky to get it---CNI has told other people 577nm is not available in a hand held
That's the usual CNI, will tell you yes today and no tomorrow.
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Old 08-13-2017, 09:41 PM #10
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Congrats Dr.Laser, you're now the proud owner of the first 577nm pointer. To bad you had to pay that $120 in customs duties.
On my Samsung tablet, your first pic of the dot on the white box looks to have a bit of green in it, but the next two beam shots and the video look pure yellow. Simply beautiful no matter how we perceive it!

Nice review, thanks for sharing this unique pointer with us.
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Old 08-13-2017, 09:55 PM #11
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

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Old 08-13-2017, 10:00 PM #12
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Nice video! That's something you don't see very often a yellow dot.
Just wondering I'm sure is it an optical illusion that the center of the dot is white, was wondering the reason behind that? Just wondering?

Enjoy your new 577 one of a kind laser. I know I would!
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Old 08-13-2017, 10:09 PM #13
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Absolutely stunning unit you've got there Dr. Laser! The way it makes 561 look very green, at least on my iPhone screen, really shows how much "yellower" it is. 577 is also pretty much right dead on yellow. An amazing sight it must be! Hope you gets much enjoyment from it

-Alex
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Old 08-13-2017, 10:26 PM #14
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Yes, I'm pretty sure you have the only pointer in this WL. I wonder which path they are taking to get to 577nm too. Unfortunately, these pointers have limited duty cycles. The nature of the beast.
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Old 08-13-2017, 10:28 PM #15
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Quote:
Originally Posted by BowtieGuy View Post
Congrats Dr.Laser, you're now the proud owner of the first 577nm pointer. To bad you had to pay that $120 in customs duties.
On my Samsung tablet, your first pic of the dot on the white box looks to have a bit of green in it, but the next two beam shots and the video look pure yellow. Simply beautiful no matter how we perceive it!

Nice review, thanks for sharing this unique pointer with us.
I agree the first one is slightly off because I shot it in JPEG and the others are RAW.

Quote:
Originally Posted by BobMc View Post
Nice video! That's something you don't see very often a yellow dot.
Just wondering I'm sure is it an optical illusion that the center of the dot is white, was wondering the reason behind that? Just wondering?

Enjoy your new 577 one of a kind laser. I know I would!
The white center is a result of over saturation, the center is much brighter than the edge.

Quote:
Originally Posted by Hap View Post
Absolutely stunning unit you've got there Dr. Laser! The way it makes 561 look very green, at least on my iPhone screen, really shows how much "yellower" it is. 577 is also pretty much right dead on yellow. An amazing sight it must be! Hope you gets much enjoyment from it

-Alex
Thanks Alex. I hope it gets affordable and more people get to see it.
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Old 08-13-2017, 10:54 PM #16
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Default Re: CNI GLP-577: The World's First Yellow Laser Pointer

Quote:
Originally Posted by Dr.Laser View Post


The white center is a result of over saturation, the center is much brighter than the edges.
Thanks Dr. Laser, just couldn't come up with a "why".

Beautiful, just beautiful!
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