Electrically switchable lasing from pyrromethene 597 embedded holographic-polymer dispersed liquid crystals

被引：48

作者：

Jakubiak, R

Natarajan, LV

Tondiglia, V

He, GS

Prasad, PN

Bunning, TJ

Vaia, RA ^{[1
]}

机构：

[1] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA

[2] Sci Applicat Int Corp, Dayton, OH 45431 USA

[3] SUNY Buffalo, Inst Lasers Photon & Biophoton, Buffalo, NY 14260 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 25期

关键词：

D O I：

10.1063/1.1839282

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

One-dimensional photonic band gap (PBG) materials created from holographic polymer dispersed liquid crystals (H-PDLCs) provide enhanced light localization in an organic electro-optic device. Distributed feedback within the reflection notch of a H-PDLC grating narrowed the bandwidth of pyrromethene 597 fluorescence from 56 to 8.4 nm at a lasing threshold of 0.12 mJ cm(-2), compared to 2.6 mJ cm(-2) required to observe amplified spontaneous emission in a nonstructured, but comparable floodlit (PDLC) sample. Application of an electric field (10-40 V/mum) continuously decreased the diffraction efficiency of the grating and the commensurate dynamic lasing intensity thus demonstrating electrically modulated gain from an optically pumped, all-organic PBG. (C) 2004 American Institute of Physics.

引用

页码：6095 / 6097

页数：3

共 19 条

[1] Photophysical characterization of pyrromethene dyes in solid matrices of acrylic copolymers [J].