Integrated Pockels laser

Mingxiao Li, Lin Chang, Lue Wu, Jeremy Staffa, Jingwei Ling, Usman A. Javid, Shixin Xue, Yang He, Raymond Lopez-rios, Theodore J. Morin, Heming Wang, Boqiang Shen, Siwei Zeng, Lin Zhu, Kerry J. Vahala (), John E. Bowers () and Qiang Lin ()
Additional contact information
Mingxiao Li: University of Rochester
Lin Chang: University of California Santa Barbara
Lue Wu: California Institute of Technology
Jeremy Staffa: Institute of Optics, University of Rochester
Jingwei Ling: University of Rochester
Usman A. Javid: Institute of Optics, University of Rochester
Shixin Xue: University of Rochester
Yang He: University of Rochester
Raymond Lopez-rios: Institute of Optics, University of Rochester
Theodore J. Morin: University of California Santa Barbara
Heming Wang: California Institute of Technology
Boqiang Shen: California Institute of Technology
Siwei Zeng: Clemson University
Lin Zhu: Clemson University
Kerry J. Vahala: California Institute of Technology
John E. Bowers: University of California Santa Barbara
Qiang Lin: University of Rochester

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract The development of integrated semiconductor lasers has miniaturized traditional bulky laser systems, enabling a wide range of photonic applications. A progression from pure III-V based lasers to III-V/external cavity structures has harnessed low-loss waveguides in different material systems, leading to significant improvements in laser coherence and stability. Despite these successes, however, key functions remain absent. In this work, we address a critical missing function by integrating the Pockels effect into a semiconductor laser. Using a hybrid integrated III-V/Lithium Niobate structure, we demonstrate several essential capabilities that have not existed in previous integrated lasers. These include a record-high frequency modulation speed of 2 exahertz/s (2.0 × 1018 Hz/s) and fast switching at 50 MHz, both of which are made possible by integration of the electro-optic effect. Moreover, the device co-lases at infrared and visible frequencies via the second-harmonic frequency conversion process, the first such integrated multi-color laser. Combined with its narrow linewidth and wide tunability, this new type of integrated laser holds promise for many applications including LiDAR, microwave photonics, atomic physics, and AR/VR.

Date: 2022
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DOI: 10.1038/s41467-022-33101-6

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