Title :
Output characteristics of diode pumped fiber ASE sources
Author :
Duling, I.N., III ; Moeller, R.P. ; Burns, William K. ; Villarruel, C.A. ; Goldberg, L. ; Snitzer, Elias ; Po, H.
Author_Institution :
US Naval Res. Lab., Washington, DC, USA
fDate :
4/1/1991 12:00:00 AM
Abstract :
High power amplified spontaneous emission (ASE) from multicore Nd:fibers pumped by laser diode arrays is investigated experimentally and theoretically. Particular examination is made of threshold conditions at which lasing occurs. A model is presented which describes output power for arbitrary end reflectors. Experimental measurements of lasing threshold reflectivity versus pump power are made and are shown to deviate from the usual laser threshold condition at high pump powers. It is demonstrated that feedback from Rayleigh backscattering can be sufficient to drive the ASE source above lasing threshold in certain configurations
Keywords :
Rayleigh scattering; backscatter; fibre lasers; neodymium; optical pumping; superradiance; Rayleigh backscattering; arbitrary end reflectors; configurations; diode pumped fiber amplified spontaneous emission sources; feedback; laser diode arrays; lasing threshold reflectivity; multicore Nd:fibers; output characteristics; output power; pump power; threshold conditions; Diode lasers; Laser excitation; Laser feedback; Multicore processing; Optical arrays; Power generation; Power measurement; Reflectivity; Semiconductor laser arrays; Spontaneous emission;
Journal_Title :
Quantum Electronics, IEEE Journal of
