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- From: parks@gibbs.physics.purdue.edu (Chris Parks)
- Newsgroups: sci.electronics
- Subject: Re: blue laser
- Keywords: blue laser
- Message-ID: <7940@dirac.physics.purdue.edu>
- Date: 28 Jul 92 22:24:06 GMT
- References: <rvk.712340195@wink>
- Sender: news@dirac.physics.purdue.edu
- Distribution: usa
- Organization: Purdue University Physics Department
- Lines: 17
-
- In article <rvk.712340195@wink> rvk@blink.att.com (Bob Kline) writes:
- >
- > Sony announced a blue laser device, with a wavelength of about
- > 440 nm. this might enable a three-fold increase in storage
- > density.
- > rvk@blink.att.com
-
- Actually, 3M was the first to invent the blue semiconductor laser.
- See Applied Physics Letters, Vol. 59, pg. 1272, (1991)
-
- So perhaps it looks like yet another great invention is being
- brought to market by the Japanese after American companies and
- universities did most of the research work. Unless 3M isn't telling
- anyone about their plans.
-
- Chris Parks
- parks@physics.purdue.edu
-