Slope Efficiency Characteristics of Mode-hop Driven Tunable Single-mode Cholesteric Liquid Crystal Laser

被引：1

作者：

Inoue, Yo ^{[1
]}

Yoshida, Hiroyuki ^{[1
]}

Inoue, Kenta ^{[1
]}

Shiozaki, Yusuke ^{[1
]}

Kubo, Hitoshi ^{[1
]}

Fujii, Akihiko ^{[1
]}

Ozaki, Masanori ^{[1
]}

机构：

[1] Osaka Univ, Dept Elect Elect & Informat Engn, Suita, Osaka 5650871, Japan

来源：

LIQUID CRYSTALS XV | 2011年 / 8114卷

关键词：

cholesteric liquid crystal laser; slope efficiency; single-mode; tunable laser; DBR laser; WAVELENGTH; ABSORPTION; EMISSION; LAYER; DYES;

D O I：

10.1117/12.893208

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We report tunable single-mode lasing with an improved slope efficiency from a cholesteric liquid crystal (ChLC) cavity with a three-layered structure. The device consists of one photopolymerized ChLC layer with a wide reflection band, another ChLC layer with a notch reflection band and a Rhodamine-6G-doped ionic liquid layer acting as the gain medium. Single-mode lasing can be obtained in this device structure because the ChLC layer with the notch reflection band strongly reflects only one of the Fabry-Perot cavity modes. Tuning of the lasing wavelength is achieved by tuning the reflection band of the notch ChLC. The device showed a maximum slope efficiency of 16%, which was found to be approximately 1.5 times larger than that of ordinary ChLC lasers doped with the pyrromethene 597 laser dye.

引用

页数：9

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