Tunable dual-wavelength organic laser based on holographic polymer dispersed liquid crystal gratings

Xiao-bo KONG; Li-juan LIU; Yong-gang LIU; Li XUAN

doi:10.3788/YJYXS20183301.0049

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Tunable dual-wavelength organic laser based on holographic polymer dispersed liquid crystal gratings

Material and Device | 更新时间：2020-07-06

- Tunable dual-wavelength organic laser based on holographic polymer dispersed liquid crystal gratings
- Chinese Journal of Liquid Crystals and Displays Vol. 33, Issue 1, Pages: 49-54(2018)
- 作者机构：
  
  1.曲阜师范大学物理工程学院, 山东曲阜 273165
  2.中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室, 吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20183301.0049
  CLC： O753.2;O435.1
- Received：21 December 2017，
  
  Accepted：29 December 2017，
  
  Published：05 January 2018
- 稿件说明：
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Xiao-bo KONG, Li-juan LIU, Yong-gang LIU, et al. Tunable dual-wavelength organic laser based on holographic polymer dispersed liquid crystal gratings[J]. Chinese journal of liquid crystals and displays, 2018, 33(1): 49-54.
DOI：

Xiao-bo KONG, Li-juan LIU, Yong-gang LIU, et al. Tunable dual-wavelength organic laser based on holographic polymer dispersed liquid crystal gratings[J]. Chinese journal of liquid crystals and displays, 2018, 33(1): 49-54. DOI： 10.3788/YJYXS20183301.0049.

摘要

本文报道了基于液晶/聚合物光栅的可调谐双波长有机激光器的制备，并研究了激光器出射激光的电调谐以及周期调谐性能。利用激光染料4-二氰亚甲基-2-甲基-6-对-二甲基氨基苯乙烯-4H-吡喃（DCM）和有机半导体材料聚[2-甲氧基-5-（2-乙基己氧基）-1，4-苯乙炔]（MEH-PPV）同时作为增益介质，液晶/聚合物光栅作为谐振腔得到可调谐双波长有机激光器，对激光器施加电压或者改变液晶/聚合物光栅的周期可调谐激光器的出射波长。双波长有机激光器从DCM和MEH-PPV中出射的激光波长分别为608.3 nm和632.1 nm，在外加电场的作用下，出射激光波长分别蓝移了9.6 nm和1.7 nm。随着光栅周期从394 nm增加到406 nm，出射激光波长分别红移了18.4 nm和19.2 nm。本工作为可调谐有机双波长激光器的研究提供了有益的指导和借鉴意义。

Abstract

A tunable dual-wavelength organic laser based on a holographic polymer dispersed liquid crystal (HPDLC) grating was reported

and the dual-wavelength laser performance under an electric field was also investigated. The gain medium of the dual-wavelength organic laser was dye 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran (DCM) and organic semiconducting poly(2-methoxy-5-(20-ethyl-hexyloxy)-pphenylenevinylene (MEH-PPV)

the cavity was HPDLC grating. The laser wavelength could be modulated by using an electric field or changing HPDLC grating period. A dual-wavelength emission at 608.3 nm and 632.1 nm was generated by DCM and MEH-PPV respectively but in one laser beam. The lasers from DCM and MEH-PPV blue shift 9.6 nm and 1.7 nm

under an electric field

respectively. When the period of the grating was changed from 394 nm to 406 nm

the lasing wavelength positions were accordingly modulated

and the lasers from DCM and MEH-PPV red shift 18.4 nm and 19.2 nm respectively. This work provides guidance for the study of tunable dual-wavelength organic laser.

关键词

Keywords

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