近日，瑞士洛桑联邦理工学院Tobias J. Kippenberg团队报道了使用Mamyshev振荡器的高脉冲能量集成锁模激光器。相关论文于2026年6月3日发表在《自然》杂志上。

超快激光器已在科学和技术领域带来了诸多进步：它们促成了角膜手术、揭示了化学反应动力学，并推动了光原子钟的发展。在过去的几十年里，人们投入大量努力，旨在实现基于光子集成电路（PIC）的锁模激光器——这类激光器紧凑、可在晶圆尺度上制造，并且兼容进一步集成片上功能。然而，迄今为止的演示成果尚缺乏驱动非线性过程（如超连续谱产生）所需的脉冲能量。

研究组通过使用铒离子注入的氮化硅光子集成电路，展示了一种克服上述挑战的锁模激光器。该激光器基于Mamyshev振荡器架构，其中交替的光谱滤波和自相位调制实现了锁模，并能支持较大的非线性相移。它无需外部种子光即可运行，输出重复频率为176MHz的脉冲序列，脉冲能量达到纳焦耳级，与光纤激光器相当，并比此前基于光子集成电路的激光器高出两个数量级。

该输出具有高相干性，可线性压缩至147fs，并且无需进一步放大，即可在氮化硅波导中直接驱动跨度为1.5个倍频程的超连续谱。由该光源驱动的紧凑型太赫兹时域光谱仪实现了5THz的带宽和90dB的动态范围。研究组展示了其在非接触式化学分析与检测中的应用。该结果揭示了集成超快激光器的潜力，其应用范围涵盖从芯片级频率计量到便携式光谱系统。

附：英文原文

Title: High-pulse-energy integrated mode-locked laser using a Mamyshev oscillator

Author: Qiu, Zheru, Yang, Xuan, Li, Xurong, Hu, Jianqi, Liu, Zhongshu, Zhang, Yichi, Ji, Xinru, Sun, Jiale, Lihachev, Grigory, Li, Zihan, Kentsch, Ulrich, Kippenberg, Tobias J.

Issue&Volume: 2026-06-03

Abstract: Ultrafast lasers have led to numerous advances across science and technology: they enabled corneal surgery1, revealed chemical reaction dynamics2 and triggered the development of optical atomic clocks3. Over the past decades, extensive efforts have aimed to realize mode-locked lasers based on photonic integrated circuits (PICs) that are compact, manufactured at wafer scale and are compatible with further on-chip functionalities4,5,6. Yet, existing demonstrations to date lack the pulse energy required to drive nonlinear processes, such as supercontinuum generation. Here we demonstrate a mode-locked laser that overcomes this challenge through the use of erbium-ion-implanted silicon nitride PICs7. The laser is based on the Mamyshev oscillator architecture8, in which alternating spectral filtering and self-phase modulation enable mode-locking and can support large nonlinear phase shifts9. It operates without external seeding, delivering a 176-MHz pulse train with nanojoule pulse energy, comparable with fibre lasers and exceeding previous PIC-based sources by two orders of magnitude. The output exhibits high coherence, can be linearly compressed to 147fs and can directly drive a 1.5-octave-spanning supercontinuum in a Si3N4 waveguide, without any further amplification. A compact terahertz time-domain spectrometer driven by this source achieved a bandwidth of 5THz and a 90-dB dynamic range. We demonstrate its application in non-contact chemical analysis and inspection. Our results show the potential of an integrated ultrafast laser, with applications ranging from chip-scale frequency metrology to portable spectroscopy systems.

DOI: 10.1038/s41586-026-10517-4

Source: https://www.nature.com/articles/s41586-026-10517-4

期刊信息

Nature：《自然》，创刊于1869年。隶属于施普林格·自然出版集团，最新IF：69.504

官方网址：http://www.nature.com/

投稿链接：http://www.nature.com/authors/submit_manuscript.html