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9 March 2023 Integrated time-stepped optical frequency comb laser sources for time-discrete OCT
Norman Lippok, Jeffrey Holzgrafe, Georgios Kyriazidis, Yongjoo Kim, Xinrui Zhu, Yaowen Hu, Gage Hills, Marko Loncar, Benjamin J. Vakoc, Hana Warner
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Proceedings Volume PC12367, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVII; PC123670R (2023) https://doi.org/10.1117/12.2652906
Event: SPIE BiOS, 2023, San Francisco, California, United States
Abstract
Time-stepped optical frequency comb (TSOFC) sources have extended the imaging capabilities of optical coherence tomography (OCT). However, existing TSOFC laser architectures have significant limitations in cost, complexity, and performance. A recently developed active integrated photonic circuit platform – lithium niobate-on-insulator (LNOI) – has the potential to address these limitations. We designed and fabricated custom LNOI integrated photonic circuits and demonstrated LNOI-based TSOFC sources for OCT. The fabricated LNOI photonic chips support optical frequency switching at the 1 ns time-scale, although the current laser prototypes are limited by the driving electronics to switching times of several hundred nanoseconds.
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Norman Lippok, Jeffrey Holzgrafe, Georgios Kyriazidis, Yongjoo Kim, Xinrui Zhu, Yaowen Hu, Gage Hills, Marko Loncar, Benjamin J. Vakoc, and Hana Warner "Integrated time-stepped optical frequency comb laser sources for time-discrete OCT", Proc. SPIE PC12367, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVII, PC123670R (9 March 2023); https://doi.org/10.1117/12.2652906
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KEYWORDS
Frequency combs
Optical coherence tomography
Integrated optics
Laser optics
Laser sources
Mode locking
Photonic integrated circuits
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