Spectral dispersion of the linewidth enhancement factor and four wave mixing conversion efficiency of an InAs/GaAs multimode quantum dot laser

被引：3

作者：

Ding, Shihao ^{[1
]}

Dong, Bozhang ^{[1
]}

Huang, Heming ^{[1
]}

Bowers, John ^{[2
]}

Grillot, Frederic ^{[1
,3
]}

机构：

[1] Telecom Paris, Inst Polytech Paris, LTCI, 19 Pl Marguer Perey, F-91120 Palaiseau, France

[2] Univ Calif Santa Barbara, Inst Energy Efficiency, Santa Barbara, CA 93106 USA

[3] Univ New Mexico, Ctr High Technol Mat, 1313 Goddard St SE, Albuquerque, NM 87106 USA

来源：

APPLIED PHYSICS LETTERS | 2022年 / 120卷 / 08期

关键词：

SEMICONDUCTOR-LASERS; FACTOR-ALPHA;

D O I：

10.1063/5.0077221

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The spectral dependence of the linewidth enhancement factor (alpha(H)-factor) of a multimode InAs/GaAs quantum dot laser is analyzed. Amplified spontaneous and high-frequency modulation methods are used to experimentally retrieve the alpha(H)-factor of each longitudinal mode below and above the threshold. A dispersion of the alpha(H)-factor is unlocked across the entire optical spectrum, which is further illustrated in the context of four wave mixing experiments. The results show that the induced conversion efficiency is increased at lasing wavelengths where the linewidth enhancement is lower. These results highlight the importance of carefully monitoring the linewidth enhancement factor in quantum dot lasers especially for frequency combs and mode-locking applications in future optical communication systems. Published under an exclusive license by AIP Publishing.

引用

页数：6

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