Highly optical feedback-tolerant single-mode monolithic coupled-cavity laser with a high-Q deformed square microcavity

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-09-27 DOI:10.1016/j.optlastec.2025.113985

Zhong Dong , Biwei Hu , Zhenning Zhang , Yang Shi , Zunhao Hu , Youling Chen , Jinlong Xiao , Yuede Yang , Yongzhen Huang

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引用次数: 0

Abstract

We have proposed and experimentally demonstrated an external optical feedback insensitive coupled-cavity laser featuring a deformed square microcavity. By optimizing the microcavity structure, we effectively suppress higher-order whispering-gallery modes, enabling stable lasing in a high-quality (Q) coupled mode with excellent single-mode characteristics and low relative intensity noise. Through the synergistic effect of introducing high-Q lasing mode and increasing the photon number ratio within the microcavity, the deformed coupled-cavity laser achieves significantly enhanced feedback tolerance compared to the conventional design, maintaining stable single-mode operation even at a feedback intensity ratio of −11 dB. Furthermore, owing to the elimination of complex fabrication processes, this laser presents a promising solution for isolator-free light sources in future photonic integrated circuits.

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具有高q值变形方形微腔的高光反馈容限单模单片耦合腔激光器

我们提出并实验证明了一种具有变形方形微腔的外光反馈不敏感耦合腔激光器。通过优化微腔结构，我们有效地抑制了高阶低语通道模式，实现了具有优异单模特性和低相对强度噪声的高质量(Q)耦合模式的稳定激光。通过引入高q激光模式和增加微腔内光子数比的协同效应，与传统设计相比，变形耦合腔激光器的反馈容限显著增强，即使在反馈强度比为- 11 dB时也能保持稳定的单模工作。此外，由于消除了复杂的制造工艺，该激光器为未来光子集成电路中的无隔离器光源提供了一个有前途的解决方案。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems