SPECTRAL LINEWIDTH AND LINEWIDTH ENHANCEMENT FACTOR IS 1.5-MU-M MODULATION-DOPED STRAINED MULTIPLE-QUANTUM-WELL LASERS

被引：3

作者：

MAWATARI, H

KANO, F

YAMAMOTO, N

KONDO, Y

TOHMORI, Y

YOSHIKUNI, Y

机构：

[1] NTT Opto-electronics Laboratories, Atsugi-shi, Kanagawa, 243-01

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1994年 / 33卷 / 1B期

关键词：

SPECTRAL LINEWIDTH; LINEWIDTH ENHANCEMENT FACTOR; EX-PARAMETER; MODULATION DOPING; STRAINED MOW; DETUNING; DIFFERENTIAL GAIN;

D O I：

10.1143/JJAP.33.811

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A study of the linewidth enhancement factor (alpha-parameter) of 1.5-mu m modulation-doped strained multiple-quantum-well (MQW) lasers is reported. The alpha-parameter was effectively decreased with increasing negative detuning. At a detuning of -30 nm, the alpha-parameter can be reduced to less than 1 by 1x10(18) cm(-3) p-type modulation doping and 1.4% compressive strain in a Fabry-Perot laser. Applying this structure to a distributed feedback (DFB) laser, we investigate the dependence of the linewidth characteristics on the alpha-parameter. Finally, in the DFB laser with the cavity length of 1500 mu m, the minimum spectral linewidth is lowered to 80 kHz at an output power of 40 mW.

引用

页码：811 / 814

页数：4

共 8 条

[1] MEASUREMENT OF THE LINEWIDTH ENHANCEMENT FACTOR-ALPHA OF SEMICONDUCTOR-LASERS [J].