Influence of the excitation area on the thresholds of organic second-order distributed feedback lasers

It is shown that the optical pump power (or energy) density thresholds required to obtain lasing from organic second-order distributed feedback lasers, increase when the excitation area (A) is smaller than a certain value (Acrit). So, in order to obtain the minimum possible thresholds and to ensure...

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Bibliographic Details
Published in:Applied physics letters 2012-11, Vol.101 (22)
Main Authors: Calzado, Eva M., Villalvilla, José M., Boj, Pedro G., Quintana, José A., Navarro-Fuster, Victor, Retolaza, Aritz, Merino, Santos, Díaz-García, María A.
Format: Article
Language:English
Subjects:
Density
Devices
Distributed feedback lasers
Energy distribution
Excitation
Lasing
Pumps
Thresholds
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Summary:It is shown that the optical pump power (or energy) density thresholds required to obtain lasing from organic second-order distributed feedback lasers, increase when the excitation area (A) is smaller than a certain value (Acrit). So, in order to obtain the minimum possible thresholds and to ensure that they constitute adequate quantities for comparison purposes, the condition A > Acrit should be fulfilled. Results also indicate that when A 
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4768242