| Authors: | M. Kiewiet, S. Cuyvers, M. Billet, K. Akritidis, V. Bonito-Oliva, G. Jeevanandam, S. Saseendran, M. Reza, P. Van Dorpe, T. Reep, J. Brouckaert, G. Roelkens, K. Van Gasse, B. Kuyken | | Title: | Micro-Transfer Printed Continuous-Wave and Mode-Locked Laser Integration at 800 nm on a Silicon Nitride Platform | | Format: | International Journal | | Publication date: | 4/2025 | | Journal/Conference/Book: | Lasers & Photonics Reviews
| | Editor/Publisher: | Wiley, | | Citations: | Look up on Google Scholar
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Abstract
Applications such as augmented and virtual reality (AR/VR), optical atomic clocks, and quantum
computing require photonic integration of (near-)visible laser sources to enable commercialization at scale. The heterogeneous integration of III-V optical gain materials with low-loss silicon nitride waveguides enables complex photonic circuits with low-noise lasers on a single chip. Previous such demonstrations are mostly geared towards telecommunication wavelengths. At shorter wavelengths,
limited options exist for efficient light coupling between III-V and silicon nitride waveguides. Recent
advances in wafer-bonded devices at these wavelengths require complex coupling structures and suffer from poor heat dissipation. Here, we overcome these challenges and demonstrate a wafer-scale micro-transfer printing method integrating functional III-V devices directly onto the silicon substrate of a commercial silicon nitride platform. We show butt-coupling of efficient GaAs-based amplifiers operating at 800 nm with integrated saturable absorbers to silicon nitride cavities. This resulted in extended-cavity continuous-wave and mode-locked lasers generating pulse trains with repetition rates ranging from 3.2 to 9.2 GHz and excellent passive stability with a fundamental radio-frequency linewidth of 519 Hz. These results show the potential to build complex, high-performance fully-
integrated laser systems at 800 nm using scalable manufacturing, promising advances for AR/VR, nonlinear photonics, timekeeping, quantum computing, and beyond Related Research Topics
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