4.5 Article

Optically pumped wavelength-tunable lasing from a GaN beam cavity with an integrated Joule heater pivoted on Si

期刊

CHINESE PHYSICS B
卷 32, 期 5, 页码 -

出版社

IOP Publishing Ltd
DOI: 10.1088/1674-1056/acc05e

关键词

GaN beam cavity; optically pumped lasing; dynamically tunable laser source; Joule heater

向作者/读者索取更多资源

In this paper, a GaN-based laser with an integrated PN junction heater on Si is fabricated. The temperature(controlled by temperature) and Joule heater provide the ability to conveniently tune the lasing properties. The device achieves optically pumped lasing with single mode and dynamic switching of its lasing mode, which may benefit future chip-based optoelectronic devices.
Dynamically tunable laser sources are highly promising for realizing visionary concepts of integrated photonic circuits and other applications. In this paper, a GaN-based laser with an integrated PN junction heater on Si is fabricated. The photoluminescence properties of the GaN beam cavity are controlled by temperature, and the Joule heater provides electrically driven regulation of temperature. These two features of the cavity make it possible to realize convenient tuning of the lasing properties. The multi-functional GaN beam cavity achieves optically pumped lasing with a single mode near 362.4 nm with a high Q-factor of 1394. The temperature of this device increases by 0-5 degrees C under the Joule heating effect. Then, electrical control of the lasing mode is demonstrated. The lasing resonant peak shows a continuous redshift of about 0.5 nm and the device also exhibits dynamic switching of its lasing mode. The lasing modulation can be ascribed to temperature-induced reduction of the bandgap. Our work may be of benefit for external optical modulation in future chip-based optoelectronic devices.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据