If history is a mirror, then we can probably forecast when "green laser diode" will be widely available.
Since I am from optical drive industry, I tend to use the first availability of optical player (around $1000 initially) till its price falls below $100 as a reference to forecast when the "green laser" will be cheaply available.
The "red laser" is used in DVD player (drive). It took 3~4 years (1997 ~2000) for red laser to be a commodity.
Here is the excerpt from this link :
"Prices for the first players in 1997 were $1000 and up. By the end of 2000, players were available for under $100 at discount retailers."
(Reference link : http://www.pavtube.com/dvd/dvd_player_history.html)
Regarding the "blue laser", it is used in blu-ray player. It also took 3~4 years (2006 ~2009) for it to be a commodity. First blu-ray player from SONY in Dec. 1 2006.
(Reference : http://www.blu-ray.com/news/?newsyear=2006)
Samsung shipped the First Blu-Ray Player in 06.15.2006
(Reference: http://www.pcmag.com/article2/0,2817,1977327,00.asp)
In 2009, Walmart served up $98 blu-ray player
(Reference: http://news.cnet.com/8301-17938_105-10284342-1.html)
As far as "green laser", the first commercially available date I can find is around Mar. 11, 2008.
(Reference http://optics.org/article/33263)
Therefore, it's very likely we will see the "green laser" to be commodity in 2011~2012.
Note :
According to an article (dated on Mar 04, 2010) posted on "compoundsemiconductor.net". It pretty much matches the timeline of what I am predicting now.
"Kaai has set itself several short-term goals, including the sampling of products in the first half of this year, followed by production in the latter half. In 2011 it will aim to ramp production, grow volume, and work hard to fulfill customer expectations.
The plan is to offer both blue and green lasers, and the company is particularly excited about applications requiring both types of source."
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