Thermally tunable liquid crystal distributed feedback laser based on a polymer grating with nanogrooves fabricated by nanoimprint lithography

被引：15

作者：

Yu, Kai-Yu ^{[1
,2
]}

Chang, Shih-Hui ^{[1
,2
]}

Lee, Chia-Rong ^{[1
,2
]}

Hsu, Teng-Yuan ^{[3
,4
]}

Kuo, Chie-Tong ^{[3
,4
]}

机构：

[1] Natl Cheng Kung Univ, Dept Photon, Tainan 701, Taiwan

[2] Natl Cheng Kung Univ, Adv Optoelect Technol Ctr, Tainan 701, Taiwan

[3] Natl Sun Yat Sen Univ, Dept Phys, Kaohsiung 804, Taiwan

[4] Natl Sun Yat Sen Univ, Ctr Nanosci & Nanotechnol, Kaohsiung 804, Taiwan

来源：

OPTICAL MATERIALS EXPRESS | 2014年 / 4卷 / 02期

关键词：

WAVE-GUIDE; DFB LASER; EMISSION;

D O I：

10.1364/OME.4.000234

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work demonstrates a thermally tunable dye-doped liquid crystal (DDLC) distributed feedback (DFB) laser based on a polymer grating. The surface emitting DDLC DFB laser is supported by the second-order Bragg grating with nanogrooves of periodicity of 360 nm which is pre-fabricated using the UV nanoimprint lithography (UV-NIL) method. The lasing wavelength of the DFB laser can be tuned from 625.1 nm to 606.35 nm if the temperature increases from 10 degrees C to 50 degrees C. The tunability of the laser is attributable to the temperature-sensitive feature in the effective refractive index of the LCs. Such a tunable laser can be used in the fabrication of tunable optical sources and biosensors, and in integrated photonic circuits, optical communication, and laser displays. (C) 2014 Optical Society of America

引用

页码：234 / 240

页数：7

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