Longitudinal coherence of organic-based microcavity lasers.
Opt Express
; 16(14): 10384-9, 2008 Jul 07.
Article
em En
| MEDLINE
| ID: mdl-18607449
ABSTRACT
We report on the measurement of the longitudinal coherence of organic microcavity lasers based on a conjugated polymer. By using a modified Michelson interferometer configuration enabling single-shot measurements of the coherence length, the transition from spontaneous emission to lasing is investigated. The measured coherence length grows upon increasing the pumping fluence, saturating around 45 microm above threshold. At large fluences, possible thermal and photo-oxidation processes occurring in the gain medium limit the further increase of the coherence length. Our results are important for understanding lasing emission in organic microcavities and optimizing the device design and performances.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fotoquímica
/
Polímeros
/
Óptica e Fotônica
/
Interferometria
/
Lasers
/
Luz
Idioma:
En
Revista:
Opt Express
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Itália