Abstract

In this work we analyze the conditions for the propagation of plane waves due to spontaneous oscillation within an active slab of width d and complex relative permittivity ε˜b. The slab is immersed in transparent, semi-infinite media of relative permittivities εa and εc respectively, without external field sources -except, of course, the power source used for pumping the active medium in the slab. It is well known that, if there is enough gain in the active medium, it may sustain spontaneous oscillations of the electromagnetic field, which result in an impaired operation. This model gives a limiting value of the small signal gain to avoid this condition. It is applicable to disk lasers, amplifiers and other optoelectronic devices in which pumping is confined to a region with transverse dimensions much larger than its length.

Details

Title
Electromagnetic field in an active slab: conditions for spontaneous oscillation
Author
Garea, M T 1 ; Duplaá, M C 1 ; Veiras, F E 2 ; Perez, L I 3 ; Matteo, C L 2 ; Sorichetti, P A 1 

 GLOmAe, Departamento de Física, Facultad de Ingeniería, Universidad de Buenos Aires,Av. Paseo Colón 850, C1063ACV, Cdad. Autónoma de Buenos Aires, Argentina 
 GLOmAe, Departamento de Física, Facultad de Ingeniería, Universidad de Buenos Aires,Av. Paseo Colón 850, C1063ACV, Cdad. Autónoma de Buenos Aires, Argentina; CONICET, Argentina 
 GLOmAe, Departamento de Física, Facultad de Ingeniería, Universidad de Buenos Aires,Av. Paseo Colón 850, C1063ACV, Cdad. Autónoma de Buenos Aires, Argentina; INTECIN-CONICET, Argentina 
Publication year
2015
Publication date
Apr 2015
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2576339690
Copyright
© 2015. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.