有机半导体微腔中的变换极限窄线宽激光作用。

Transform-limited, narrow-linewidth lasing action in organic semiconductor microcavities.

作者信息

Bulovic V, Kozlov VG, Khalfin VB, Forrest SR

机构信息

Center for Photonics and Optoelectronic Materials (POEM), Department of Electrical Engineering and the Princeton Materials Institute, Princeton University, Princeton, NJ 08544, USA.

出版信息

Science. 1998 Jan 23;279(5350):553-5. doi: 10.1126/science.279.5350.553.

DOI:10.1126/science.279.5350.553

PMID:9438846

Abstract

Lasing action in organic vertical-cavity surface-emitting laser (OVCSEL) structures is demonstrated. Optically pumped OVCSELs with an active layer composed of a thin-film organic semiconductor tris-(8-hydroxyquinoline) aluminum (Alq3) doped with DCM laser dye produced very narrow linewidth (0.2 +/- 0.1 angstrom), high-power (3 watts) emission that could be varied in different devices from orange to red. The efficient energy transfer from Alq3 to DCM results in a threshold input energy of 300 microjoules per square centimeter. An operational lifetime >10(6) laser pulses was achieved for a device operated well above threshold in atmosphere. The linewidths above threshold are Fourier transform-limited and could potentially be narrowed further.

摘要

已证明有机垂直腔面发射激光器（OVCSEL）结构中的激光作用。用掺杂了DCM激光染料的薄膜有机半导体三（8 - 羟基喹啉）铝（Alq3）作为有源层的光泵浦OVCSEL产生了非常窄的线宽（0.2±0.1埃）、高功率（3瓦）的发射，其发射颜色在不同器件中可从橙色变化到红色。从Alq3到DCM的有效能量转移导致每平方厘米300微焦耳的阈值输入能量。对于在大气中运行且远高于阈值的器件，实现了大于10⁶个激光脉冲的工作寿命。阈值以上的线宽受傅里叶变换限制，并且有可能进一步变窄。