Linewidth and Bandwidth - It's very difficult for me to distinguish between these two parameters in laser, at first I think they must be identical, but, after checking the definition, I find that I am confused.
Let's take an example.
Now that I need the laser to produce a beam which has a full width at half maximum (FWHM) within 0.112237 [nm], and the corresponding frequency might be 2.67106620811e [EHz], there is no doubt that this is the bandwidth of of my requirement.
however, according to the specification of many laser systerms, their linewidth might be only within MHz (some might be in GHz, but rare), may I understand that these laser cannot meet me requirement?
I would like to hear your suggestion.
Thanks!
Let's take an example.
Now that I need the laser to produce a beam which has a full width at half maximum (FWHM) within 0.112237 [nm], and the corresponding frequency might be 2.67106620811e [EHz], there is no doubt that this is the bandwidth of of my requirement.
however, according to the specification of many laser systerms, their linewidth might be only within MHz (some might be in GHz, but rare), may I understand that these laser cannot meet me requirement?
I would like to hear your suggestion.
Thanks!