Reversible Laser Threshold Modulation in Dithienylethene Conjugated Polymer Blends: A Concept for q-Switching in Organic DFB Lasers

被引：5

作者：

Steppert, Ann-Kathrin ^{[1
]}

Mikosch, Annabel ^{[1
]}

Haraszti, Tamas ^{[1
]}

Goestl, Robert ^{[1
]}

Kuehne, Alexander J. C. ^{[1
,2
]}

机构：

[1] DWI Leibniz Inst Interact Mat, Forckenbeckstr 50, D-52074 Aachen, Germany

[2] Ulm Univ, Inst Organ & Macromol Chem, Albert Einstein Allee 11, D-89081 Ulm, Germany

来源：

ACS PHOTONICS | 2019年 / 6卷 / 02期

关键词：

1D diffractive feedback gratings; 2D diffractive feedback gratings; organic lasers; nanolithography; photochromism; DIARYLETHENE; NANOPARTICLES; PHOTOCHROMISM; MEMORIES; BAND;

D O I：

10.1021/acsphotonics.8b01641

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Tuning the resonator quality is a long established technique for inorganic lasers giving access to extremely short or temporally precise laser pulses. However, this so-called q-switching, where the resonator can be "on" and sustain lasing or be switched "off" and inhibit lasing is widely unknown for conjugated polymer lasers. Here, we admix thermally stable photochromic dithienylethenes with conjugated polymer laser gain materials on 1D and 2D diffractive feedback gratings, which are generated by two-photon laser writing. By irradiation with differently colored light, the thermally bistable dithienylethenes reversibly modulate the refractive index of and exhibit competing absorption with the gain medium, effectively suppressing laser emission in the one state and allowing low threshold (2.15 mJ/cm(2)) laser emission in the other state.

引用

页码：558 / 564

页数：13