Emission characteristics of near-ultraviolet two-dimensional organic photonic crystal lasers

✍ Scribed by Ying Dong; Junfeng Song; Chuanhui Cheng; Wenhai Jiang; Shukun Yu; Guotong Du; Xu Wang

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 274 KB
• Volume: 50
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.23102

✦ Synopsis

Abstract

We demonstrate near‐ultraviolet frequency two‐dimensional organic‐photonic‐crystal laser using resonator structures that offer two‐dimensional distributed feedback at room temperature. The gain medium is N,N′‐di‐1‐naphthyl‐N, N′‐diphenylbenzidine (NPB) which is deposited on lithographically patterned silica structure. We observe surface emitting lasing action with the central beam normal to the surface and the far‐field emission characteristics of this laser. The devices operate in the blue spectral region, and exhibit very low threshold energies for oscillation (0.3 kW/cm^2^). The far field is also shown to contain information about the quality of the photonic crystal. This emission pattern offers a convenient and powerful way to evaluate the nature of laser action in such resonators. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 382–385, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23102