A future for green diodes?

[Skywise]

Was browsing wikipedia and discovered this:

http://en.wikipedia.org/wiki/Holographic_Versatile_Disc

HVD - Holographic Versatile Disc

"It can hold many times the amount of information as a Blu-ray disc,
and the current maximum is 10TB. It employs a technique known as
collinear holography, whereby two green laser beams are collimated
in a single beam."

...

"The system uses a green laser, with an output power of 1 watt which
is quite high power for a consumer device laser. So a major challenge
of the project for widespread consumer markets is to either improve
the sensitivity of the polymer used, or develop and commoditize a
laser capable of higher power output and suitable for a consumer unit."

Brian
--
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[Fleetie]

Skywise wrote:

> "The system uses a green laser, with an output power of 1 watt

Wow, the fun you could have with that!

Martin

[DougD]

And I would guess that it's not going to be some big ugly
multi-mode beam, it's going to have to have a very good
profile if they're hoping to keep their hoped for 3um bit
spacing without a lot of crosstalk, noise, etc. Could be
lots of fun if they pull it off, but then again, weren't we all
supposed to be out buying HD laser rear projection tv's
for this Xmas, or was it the year before?.
We will be seeing something though as there is too much
demand for this type drive in the digital cinema biz, and
now that Anthra, er, Avatar has brought in >$1 Billion
box office, there's going to be a mad rush by the studios
to gear up for even more 3D and other digital only
productions. They made a deal about 2 years ago that
for the theater owners to make the change from film to
electronic projection, the studios has to guarantee at
least 19 3D feature films per year for at least 5 years,
and I bet that number goes up, so they will be needing
these very high density drives on both the production,
and distribution side. Whether those numbers are enough
to drive the cost down to consumer level, who knows?...
Personally, I think someone needs to rethink using just
green and blue only diodes, they need to stick about a
2 watt red in there, just in case, never know when you
might need that extra wavelength down the road a bit..
Yeah, that's the ticket!

d.