Picosecond Spectral Dynamics of Gain-Switched DFB Lasers

被引：21

作者：

Riecke, Sina Margareta ^{[1
]}

Wenzel, Hans ^{[2
]}

Schwertfeger, Sven ^{[2
]}

Lauritsen, Kristian ^{[1
]}

Paschke, Katrin ^{[2
]}

Erdmann, Rainer ^{[1
]}

Erbert, Goetz ^{[2
]}

机构：

[1] PicoQuant GmbH, D-12489 Berlin, Germany

[2] Ferdinand Braun Inst, D-12489 Berlin, Germany

来源：

IEEE JOURNAL OF QUANTUM ELECTRONICS | 2011年 / 47卷 / 05期

关键词：

Bragg gratings; optical pulses; semiconductor lasers; QUANTUM-WELL LASERS; PULSE GENERATION; SEMICONDUCTOR-LASERS; MULTISECTION LASERS; DIODE;

D O I：

10.1109/JQE.2010.2096501

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：

We study the generation of picosecond pulses by gain-switching of distributed feedback ridge-waveguide laser diodes. By pumping with short current pulses without d.c. bias, we obtain laser pulses with peak powers above 1W at a wavelength around 1065nm. These pulses exhibit strong spectral dynamics stemming from mode competition after switch-on. Typically, emission begins with a broad spectrum, before narrowing down to the Bragg line within a few hundred picoseconds. This dynamic behavior is studied in detail both experimentally and numerically for a variety of grating parameters. Using a rate-equation model with two species of photons, we achieve excellent agreement between simulation and experiment. In conclusion, we discuss the optimization of DFB laser diodes for short pulse generation.

引用

页码：715 / 722

页数：8

共 27 条

[1] A correct single-mode photon rate equation for multisection lasers [J].