In:
Applied Physics Letters, AIP Publishing, Vol. 89, No. 20 ( 2006-11-13)
Abstract:
We report on the fabrication of low threshold distributed feedback (DFB) polymer lasers based on a polyfluorene derivative containing statistical binaphthyl units (BN-PFO). First- and second-order feedback lasers have been realized. The emission was tuned in the wavelength range from 438to459nm by varying the grating period and the film thickness. A threshold energy of 280pJ/pulse was observed in second-order DFB structures, which could be further reduced to 160pJ/pulse by employing first-order feedback in electron beam lithographically patterned structures with a period of 140nm. In these first-order structures, laser oscillation at both edges of the photonic stop band was observed. These very low threshold values render BN-PFO a very promising material for future electrically pumped organic semiconductor laser diodes.
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
2006
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
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