Industral ncentive to build TEM00 high-power green diodes.

I don't think we'll see single mode green diodes anytime soon, HOWEVER THERE IS INCENTIVE TO DEVELOP THEM!!!

Holographic Versatile Disks require a single mode green laser as a WRITE laser. One of the hurdles that HVD is trying to overcome is the staggering price of several hundred mW single mode green lasers...

I see them in the future maybe 5-7 years. I definitely know nichia will be the first to build them.



Discuss

HVD, or just "holographic storage", has been "three-to-five-years-away" for about 15 years now.

Every time a new format comes out, there are the hold-outs that are waiting, because they insist that holographic disks holding untold terabytes are "just around the corner".

There are some working limited-run drives using DPSS green, and they're around $15,000 - and don't store as much as you'd think.

When CD writers were new, I heard that holographic was right around the corner. When CD-RW happened; when DVD-R happened, when DVD-R-DL happened and when HD-DVD/BluRay happened.

HVD at least started to "gel" as "recently" (not quite) as 2004; There were promises for probably 5-6 years before that, too, of it being 'about to hit the market'; In 2007 it was "really going to happen, no, really this time" - and here we are in 2010, and, well...

I'm not saying that what you're proposing isn't valid. It is. (Though flash/solid state capacities are advancing pretty quickly.)

Maybe once green direct lasers happen, we'll finally see it. But I just don't know if optical media is long for this world (I have mixed feelings on this..) - and HVD has been the poster child for "TTFYA" for a long time now.

Maybe I'm wrong. Hopefully I am, but honestly, as far as optical storage goes, I think BDXL has more of a realistic chance than HVD at this point.