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- Newsgroups: sci.electronics
- Path: sparky!uunet!wupost!usc!rpi!usenet.coe.montana.edu!news.u.washington.edu!milton.u.washington.edu!whit
- From: whit@milton.u.washington.edu (John Whitmore)
- Subject: Re: blue laser
- Message-ID: <1992Jul30.000150.10557@u.washington.edu>
- Keywords: blue laser
- Sender: news@u.washington.edu (USENET News System)
- Organization: University of Washington, Seattle
- References: <rvk.712340195@wink>
- Distribution: usa
- Date: Thu, 30 Jul 1992 00:01:50 GMT
- Lines: 16
-
- 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.
-
- > what some sources (e.g., The NY Times ) failed to mention is that
- > the devices work at something like -300 F.
-
- Presumably this is a solid state laser; there have been blue
- gas lasers around for a decade or more (He-Cd), and blue-output lasers
- that employ an IR solid-state laser and a tripler (or is it doubler?).
- At a guess, the IR/tripler lasers will be the most convenient ones
- for future development.
-
- John Whitmore
-