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Ultra-narrow-linewidth hybrid-integrated self-injection locked laser at 780 nm
Optica ( IF 8.4 ) Pub Date : 2024-07-10 , DOI: 10.1364/optica.531152
Artem Prokoshin , Michael Gehl 1 , Scott Madaras 1 , Weng W. Chow 1 , Yating Wan
Affiliation  

Narrow-linewidth lasers are essential across a wide range of applications, including classical and quantum sensing, trapped ion systems, position/navigation/timing systems, optical clocks, and microwave frequency synthesizers. In the visible and near-visible spectrum, low-noise lasers are particularly important for laser trapping and cooling techniques, which are vital for trapped ion quantum computing, sensing, and atomic clocks. In this context, our work showcases a hybrid-integrated narrow-linewidth laser that operates at 780 nm, achieving a self-heterodyne linewidth of 105 Hz. To validate the experimental results, we performed a numerical analysis that combines insights from a many-body theory applied to the gain region with a travelling-wave model to capture the laser dynamics. Our investigation further delves into how the linewidth of the self-injection locked lasers is influenced by the parameters of micro-ring resonators, aiming to assess the potential for achieving Hz-level integrated laser linewidths at 780 nm. This work not only demonstrates the technical feasibility of Hz-level narrow-linewidth lasers but also lays the groundwork for future explorations in the field.

中文翻译:


780 nm 超窄线宽混合集成自注入锁定激光器



窄线宽激光器在各种应用中都是必不可少的,包括经典和量子传感、俘获离子系统、位置/导航/定时系统、光学时钟和微波频率合成器。在可见光和近可见光谱中,低噪声激光器对于激光捕获和冷却技术尤其重要,这对于捕获离子量子计算、传感和原子钟至关重要。在此背景下,我们的工作展示了一种混合集成窄线宽激光器,其工作波长为 780 nm,可实现 105 Hz 的自外差线宽。为了验证实验结果,我们进行了数值分析,将应用于增益区域的多体理论的见解与行波模型结合起来以捕获激光动力学。我们的研究进一步深入研究了自注入锁定激光器的线宽如何受到微环谐振器参数的影响,旨在评估在 780 nm 处实现 Hz 级集成激光线宽的潜力。这项工作不仅展示了赫兹级窄线宽激光器的技术可行性,而且为未来该领域的探索奠定了基础。
更新日期:2024-07-10
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