Article View: sci.electronics
Article #18949Re: LASER diodes
From: John Pantone
Date: Tue, 29 Mar 1988 18:39
Date: Tue, 29 Mar 1988 18:39
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> Well it was visible, although I suspect that most of the energy
> was in the infrared spectrum. (I though lasers were supposed
> to be monochromatic)?
Not necessarily monochromatic (although many are very nearly so), but
coherent (light waves "in step", making the construction of very
nearly zero-spreading beams possible (collumnated (sp?))).
Most laser diodes are, indeed, principally active in the infra-red,
quite a few, however, emit a detectable red light.--
These opinions are solely mine and in no way reflect those of my employer.
John M. Pantone @ GE/Calma R&D, 9805 Scranton Rd., San Diego, CA 92121
...{ucbvax|decvax}!sdcsvax!calmasd!jnp jnp@calmasd.GE.COM GEnie: J.PANTONE
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!think!ames!ucsd!sdcc6!calmasd!jnp From: jnp@calmasd.GE.COM (John Pantone) Newsgroups: sci.electronics Subject: Re: LASER diodes Message-ID: <2702@calmasd.GE.COM> Date: 29 Mar 88 18:39:15 GMT References: <5451@spool.cs.wisc.edu| <2547@ihuxv.ATT.COM> <5479@spool.cs.wisc.edu> Distribution: na Organization: G.E.- Calma R&D, San Diego, CA Lines: 13 Summary: coherent, not monochromatic