Title

Lasing Action In Two-Dimensional Organic Photonic Crystal Lasers With Hexagonal Symmetry

Abstract

We investigate fluorescence and lasing action from strongly modulated two-dimensional surface relief structures with hexagonal symmetry onto which thin films of optically active organic material have been deposited. As compared with second-order laser structures with square symmetry, these organic photonic crystal lasers exhibit unusual feedback mechanisms. As a result, we observe surface-emitting lasing action with a central beam normal to the surface and a hexagonal emission pattern of side-beams whose direction slightly deviates from the normal. A corresponding theoretical analysis allows us to determine the photonic bandstructure and the low-threshold laser modes in this system. These results agree very well with fluorescence data and confirm the hexagonal lasing pattern and the corresponding emission angles.

Publication Date

3-1-2006

Publication Title

Applied Physics B: Lasers and Optics

Volume

82

Issue

4

Number of Pages

539-541

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1007/s00340-005-2120-y

Socpus ID

32844462540 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/32844462540

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