Re: Does the laser wear out?

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#135

From: Phred
Date: Tue, 22 Oct 2002 13:51

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In article <ap1c3j$sps$1@agate.berkeley.edu>, 
tedcrum@socrates.Berkeley.EDU () wrote:
>In article <Xns92AE9A5A5429674C1H4@62.253.162.105>,
>Sandy  <sorry@no.email.please> wrote:
>>A friend of mine doesn't like to use his CD burner because he feels 
>>the laser has a finite life and he will eat into that life.
>>
>>Is the life of a CD-RW laser sufficiently short for us to need to
>>worry about conserving it?

>Unlike most other semiconductor devices, including LED's, laser diodes do
>have a finite life. The other common device with finite lifetime is
>flash-erase eprom.
>
>The failure mode is drop-off of optical power, and lifetime goes down with
>power demand. Life should be longer than the mechanics in read mode, but
>could be about 5000 (an informed WAG) hours average in write mode.

Well, what happens when it "wears out"?  Do you get a decent 
unambiguous failure, or just an insidious increase in unreliable 
writes that you don't notice until you need your backup CD?


Cheers, Phred.

-- 
ppnerkDELETE@THISyahoo.com.INVALID

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From: ppnerk@yahoo.com (Phred)
Newsgroups: alt.comp.periphs.cdr,comp.publish.cdrom.hardware,aus.computers.cdrom
Subject: Re: Does the laser wear out?
Date: Tue, 22 Oct 2002 13:51:18 GMT
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