NDS-7175 Skyblue LD ?

[laserHB]

Not something I can link as they are R&D only currently, not advertised online nor for sale online and there are only a few of them in existence. But I have seen them and had discussions with the manufacturer, they are mostly for medical market at this point but even that has not eventuated to my knowledge. They are not diode nor technically DPSS.. another type of SSL (it's a clue.. there are not that many types left in this form factor especially at such power ). ~5x4cm in a butterfly housing so would be a large pointer but could definitely be shrunk down to a more narrow packaging. For now DPSS is the way to go for pointers. Lets just say you could almost buy 6W of OPSL for the price of one of these, they are over 1W and less than 2W.. but they are single mode and far superior BQ and beam parameters to OPSL. A bad one would be 15 picometers of linewidth. If anyone with crazy money wants one please get in touch but it would take some time to engineer the drivers for it.

This is a slightly similar design here below but it's really for IR, sorry for the crappy photo, yellow has another step or two involved. At such low volume it's hand placed, hence the cost.
Maybe could get them down to 2.5x5cm or so.. much more reasonable for pointers (i'd love a true gold pointer) but again $$$$.
View attachment 67093
There also are exotic green WL also. The transition from green to yellow is very abrupt in terms of WL change, more so than any other major colour transition I have seen.

And yes the NDS7175 is real, now the datasheet is public I can tell you they are not going to be in a pointer or high volume laser projector any time soon (i'd say 5 years from now maybe unless Sharp pulls a rabbit out of the hat), the cost is in the range at lower manufacturing volumes that one poster mentioned is prohibitive. It's barely do-able for custom applications for us. Have had some delays in two projects (and ran out of time to test the ES we had - sorry, have barely had time to be on here since last post) that will use them, but I will be ordering some in the next three months if all goes well, one customer wants somewhere north of 30W for a project and another for scientific use at lower power. I can only imagine how bright it will be with night adjusted eyes. More lumens than even green!
I'll try to keep a few spare for a crazy lower power lumia/personal PJ project.. but need to get the dichros sorted first, maybe even temporarily in pointer guise just to tick that dream off for ya'll if I can wrangle it past the boss (who hates pointers due to the legal issues they have caused the show industry)

So the NDS7175 LD is already avaiable for R&D purpose? That sounds pretty promising.
*Edit
Or is it restricted to US market or something?

 

[Arctos]

So the NDS7175 LD is already avaiable for R&D purpose? That sounds pretty promising.
*Edit
Or is it restricted to US market or something?

Very restricted to each industry e.g. we can't go use it to make medical stuff, similar to how you get ball lenses to deal with.. But not R&D only, it's available just cost prohibitive for laser shows for normal projectors at lower volumes and OPSL is more viable and easier to integrate in lower volumes. Cyan/Yellow in projectors is very rare as it is, so the demand is low, most customers want colour pallete contiguity across their fleet so adding yellow/cyan makes no sense for most so far. Only customer I have wanting it is a custom application for permanent install, where it makes sense in a volume they want it at. Otherwise it would be a no-go.

 

[kecked]

Oh I’m drooling now! I dream of yellow. But cyan yellow. Oh man the white!

 

[RedCowboy]

I would love to have a few myself, especially if they're single mode.


---EDIT---
typo, meant to say if they were not if they're

 

[paul1598419]

Looking at the "typical spectrum" on these NDS7175's, there aren't single mode. Also, the over 2 watts output would make these the most powerful single mode ever if they were.

 

[Arcygenical]

Also looked at some solid state yellows last month but price is... high.

Yeah I'm ready to drop a few hundred into a SS yellow diode, just don't want to import a full pointer. Can't wait until we get these in the triple digits. The reason I got into this hobby was watching telescope AO's as a kid.

As for the 7175, at this wattage, the tradeoff against single mode probably isn't a deterrent for most purchasers - myself included... Though I never really run anything beyond a few hundred mw for purely safety reasons... (knowing full well at this output there's barely any difference).