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

Kai Yu Yu, Shih Hui Chang, Chia Rong Lee, Teng Yuan Hsu, Chie Tong Kuo

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

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 secondorder 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 °C to 50 °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.

Original languageEnglish
Pages (from-to)234-240
Number of pages7
JournalOptical Materials Express
Volume4
Issue number2
DOIs
Publication statusPublished - 2014 Feb 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Fingerprint Dive into the research topics of 'Thermally tunable liquid crystal distributed feedback laser based on a polymer grating with nanogrooves fabricated by nanoimprint lithography'. Together they form a unique fingerprint.

Cite this