Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Optoelectronic devices what rms linewidth means?

  1. Apr 30, 2010 #1
    Can someone explain to me in the context of optoelectronic devices what rms linewidth means?? For example the rms linewidth of a particular laser is 0.1nm. What does that mean? and what implications does this have on a communications system using that laser?

  2. jcsd
  3. Apr 30, 2010 #2


    User Avatar
    Science Advisor
    Gold Member

    Re: Linewidth

    Real lasers aren't perfect, meaning if you take a closer look at a laser which emits light with a nominal wavelength of say 670nm (laser pointer) you will find that it really emits light in a small range, say from 669.95 to670.05 nm; this means that its linewidth is 0.1 nm.
  4. Jun 8, 2011 #3
    Re: Linewidth

    lovely explanation, dude :-D just the thing!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Optoelectronic devices linewidth Date
I Device creates negative mass? Jan 11, 2018
I Concentration of R-G centers in a PN junction May 21, 2017
A Shot Noise in Double-Quantum dots Nov 5, 2016
Optoelectronics: Why Semiconductors? Mar 11, 2013