Low-threshold distributed feedback laser based on holographic polymer dispersed liquid crystals through the oriented organic semiconductor films

被引：0
作者：
Liu, Lijuan [1 ,4 ]
Liu, Minzhe [2 ]
Wang, Qidong [3 ]
Hu, Hanmin [1 ]
Zhang, Feng [1 ]
Kong, Xiaobo [1 ]
机构：
[1] Quzhou Univ, Coll Elect & Informat Engn, Quzhou 324000, Peoples R China
[2] Qilu Univ Technol, Laser Inst, Shandong Acad Sci, Qingdao 266000, Peoples R China
[3] Chinese Acad Sci, Changchun Inst Opt, State Key Lab Appl Opt Fine Mech & Phys, Changchun 130033, Peoples R China
[4] Qufu Normal Univ, Sch Phys & Phys Engn, Shandong Prov Key Lab Laser Polarizat & Informat T, Qufu 273165, Peoples R China
来源：
SCIENTIFIC REPORTS | 2024年 / 14卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Low threshold; Distributed feedback laser; Oriented organic semiconductor; HPDLC; LIGHT-EMITTING-DIODES; PUMP EFFICIENCY; ENHANCEMENT; EMISSION;
D O I：
10.1038/s41598-024-68896-5
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A specific optimized configuration for low threshold organic semiconductor laser based on a holographic polymer dispersed liquid crystal (HPDLC) transmission grating was demonstrated. Here the organic semiconductor films and phase separated liquid crystal (LC) molecules were oriented along the direction of the HPDLC grating grooves. The influence of the organic semiconductor chain orientation and the excitation polarization on the optical properties of the materials has been investigated. Especially, when polymer chain orientation, LC molecules and pump light polarization are consistent with the direction of the grating grooves, the performance of the outgoing laser is greatly improved. Up to 9.78% conversion efficiency with a threshold lower to 0.12 mu J/pulse can be obtained, indicating their potential for high-performance organic optoelectronics.
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页数：8
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