Monolithic widely tunable laser diodes for gas sensing at 2100 nm

被引：0

作者：

Koslowski, Nicolas ^{[1
]}

Heger, Andreas ^{[1
]}

Roessner, Karl ^{[1
]}

Legge, Michael ^{[1
]}

Hildebrandt, Lars ^{[1
]}

Koeth, Johannes ^{[1
]}

机构：

[1] Nanoplus GmbH, D-97218 Gerbrunn, Germany

来源：

NOVEL IN-PLANE SEMICONDUCTOR LASERS XII | 2013年 / 8640卷

关键词：

widely tunable laser; lateral binary superimposed grating (BSG); multisegment Vernier-tuning; TDLS; DFB; SSG DBR LASERS; SEMICONDUCTOR-LASERS; DFB LASERS; GRATINGS; DESIGN;

D O I：

10.1117/12.2004020

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Novel monolithic widely tunable laser diodes in the 2.1 mu m wavelength region based on GaSb / AlGaAsSb are presented. Using the concept of a lateral binary superimposed (BSG) grating structures and multisegment Vernier-tuning, stable single-mode output is realized at discrete wavelength channels in the 2060 nm - 2140 nm region. A total tuning above 80 nm in six channels is demonstrated. In every wavelength channel, the output wavelength can be tuned by current and temperature. Each wavelength channel offers up to 6 nm of mode hop free tuning, making this novel widely tunable laser highly attractive as a monolithic light source for multiple-gas sensing or liquid detection purposes. The wavelength channels can be arbitrarily placed within the material gain allowing BSG lasers to sweep e.g. over several gas absorption line within 80 nm. Within a wavelength channel, the widely tunable lasers show DFB like spectral performance with average side-mode suppression-ratios above 40 dB, output power of up to 15 mW at 25 degrees C. Also temperature and current tuning coefficients are comparable to those of DFB lasers. This paper will present an overview of laser concept, performance data and applications.

引用

页数：8

共 13 条

[1] Design of widely tunable semiconductor lasers and the concept of binary superimposed gratings (BSG's) [J].