High-Frequency Self-Modulation in Short-External-Cavity VCSEL With Concave Mirror

被引：1

作者：

Liu, Tao ^{[1
]}

Katayama, Takeo ^{[1
]}

Kawaguchi, Hitoshi ^{[1
]}

机构：

[1] Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300101, Japan

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2015年 / 27卷 / 03期

基金：

日本学术振兴会;

关键词：

Beat note; concave mirror; external-cavity modes; external-cavity VCSEL; polarization-rotated feedback; SURFACE-EMITTING LASERS;

D O I：

10.1109/LPT.2014.2368582

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 observed high-frequency modulation of optical output from a short-external-cavity vertical-cavity surface-emitting laser with a new configuration. The length L of the external cavity was reduced using a short-radius concave mirror as one end of the cavity and using a thin-film quarter-wave plate in the cavity. With a concave mirror having a radius of 20 mm, a pulse sequence based on the well-known polarization self-modulation and having a repetition rate of similar to 3.5 GHz was generated. When the radius was shortened to 5.08 mm, a sinusoidal modulation with a frequency of similar to 12.6 GHz was generated. With changing drive current, stable modulation sequences with periodic changes in the modulation frequency and polarization direction were observed at discrete current values. We found that two external-cavity modes, which were separated by nearly c/4L, selectively oscillated and the beat of them resulted in modulation of the output.

引用

页码：280 / 283

页数：4

共 5 条

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