Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

Buy Site Supporter Role (remove some ads) | LPF Donations

Links below open in new window

FrozenGate by Avery

574nm 36 mW Yellow Laser

That’s a good point, duh... but for 50-100 mw, should start showing up in pointers.
 





I bought a 10,000 mw 532 nm pointer from Aliexpress before I found the forum, was closer tp 250-300 mw.
 
Yes, the thing is with the inexperienced. They see huge numbers and think that one is the best. Although 200-300mW of 532nm is a lot of power still. I purposely bought a 5000mW pointer in order to get a cheap 100mW+ 532.
 
Chicxulub said:
I think that after allowing this info to sufficiently process, I'm gonna order one of these. Does anyone have any idea what it would take or how long it may be before this wl is available in a handheld?

Also- after almost 11 years as a member, I finally have 1000 posts! :eek::san:
Click to expand...

I have 2 of the 565 units in hand and 2 of the 575's on the way. In testing, except for the module fan, these units hit lasing threshold at about 4.5v into the stock driver, and what "looks" like, no power meter to check, full output by 6v. I don't see much visual diff even cranking input vdc to 12v. The driver IC's and the large cap still get very hot, at the 6v, 180F in a few minutes though, have heat sinks comming for that. The module, even with no fan running, doesn't even get warm!

As a side note, at 4.5v when 1st light comes out, it is nearly perfectly round! Just dim, looks to be 2-3 mW. By just over 5v, it's getting too bright to see the spot itself without proper safety glasses.

Since I have the 575's on the way, I may try to work one of the 565's into a hand held of some sort. I have plenty of LiPo's and chargers laying around. I may even try a different type of driver for it to save space.

How would the classic LM317 driver work on this unit?
 
Last edited:
I don't think you would want to use an LM317 as a driver for these units. They need over an amp of current, so I'd use a buck driver. I happen to have some old new stock from Laseerer that I might try as a driver for mine at some point.
 
I’ve been poring over materials while I sit at work today. And while I haven’t kept a super close eye on the thread I just want to put some of this information out there if it hasn’t been put out already.

The most likely pump diode candidate seems to be a 976nm 1.5w pump rated at 1.5v at Iop. That would easily coincide with the 1.5V across the diode perfectly for around a bit over an amp of current.

These are commonly used to pump Yb 3+ ions, which can be doubled to 575 ish depending on the temperature and cavity set up. And yb crystals are not exactly uncommon. They would make a pretty cheap and effective, but very different efficiency source depending on the crystal structure used.
 
Last edited:
Well being the new units are going to be sightly higher (probably just more current) I've shipped mine off to Rich to be put in handhelds. Looks like electrically isolating the module and using the blitzbuck driver is the way to go.
 
Last edited:
That's great information, Matt. Hope it pans out.

Zach, the only reason to use the Blitz Linear driver is so you won't need to isolate anything on the pointer. That is a very tiny driver, though. It will likely need a good heat sink if used. I have used that driver in many low current builds. Never used one that was delivering ~1.5 amps before, so be mindful of its waste heat.
 
ultimatekaiser said:
I’ve been poring over materials while I sit at work today. And while I haven’t kept a super close eye on the thread I just want to put some of this information out there if it hasn’t been put out already.

The most likely pump diode candidate seems to be a 976nm 1.5w pump rated at 1.5v at Iop. That would easily coincide with the 1.5V across the diode perfectly for around a bit over an amp of current.

These are commonly used to pump Yb 3+ ions, which can be doubled to 575 ish depending on the temperature and cavity set up. And yb crystals are not exactly uncommon. They would make a pretty cheap and effective, but very different efficiency source depending on the crystal structure used.
Click to expand...

Interesting. Care to ponder how the 565 nm yellow works?
 
I cant do much beyond speculate, as i dont have one in my hands. (I know, I was late to the party) I could do testing on the crystals and diode, but only if i had one to dig through and play with. The 565s are probably similar. 561 can be made several ways as well. Its hard to be conclusive without a physical sample. I have lab grade drivers and stuff so itd be interesting to play with a few if i can get my hands on one. It strikes me as they appear built in a similar manner to my old Aries module.

I could also compare them to my opsl units and other lasers in that area of the spectrum. Though catching that on cam would be hard.
 
Last edited:
Considering how inexpensive these are, would you consider ordering one, Matt? I only have the one for now, so I'm not tearing it apart to try to figure out how it works. It has to do with not opening up a perfectly good laser. ;)
 
Once we get the handheld issue figured out, I'm willing to pay one of you to build me a pair of Spartans; a pair at 10 and 100ish mW. I don't have the means to do it myself, but I want in at the ground floor of this.
 
Chicxulub said:
Once we get the handheld issue figured out, I'm willing to pay one of you to build me a pair of Spartans; a pair at 10 and 100ish mW. I don't have the means to do it myself, but I want in at the ground floor of this.
Click to expand...

Ground floor? 10mW and 100mW --they do not make/offerer either of those outputs. Maybe have a look at what is--see 575nm here: https://wholesaler.alibaba.com/product-detail/Most-cost-efficient-garden-laser-animation_60746590781.html and 565nm here: https://wholesaler.alibaba.com/product-detail/factory-price-yellow-laser-outdoor-holiday_60746019584.html?spm=a2700.wholesale.maylikever.2.38b31fb18XZLOj

Nobody is offering any of them as handhelds and probably will not for the foreseeable future. Is just a matter of finding someone that will do the job if you supply the parts.

Have you got a couple of spare dead Spartan lasers to scavenge or unused/empty Spartan hosts?
Not sure if Dragon lasers has any they would sell or if CNI will be bothered to sell just the hosts.
Is not a small detail.

Maybe order the 575nm module from China first and see what you think? Email Freeman at OPT and ask for price and delivery: email him at fb@optlaser.com
 
Last edited:
You must log in or register to reply here.


Back
Top