期刊
OPTICA
卷 3, 期 8, 页码 854-860出版社
OPTICAL SOC AMER
DOI: 10.1364/OPTICA.3.000854
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资金
- Intelligence Advanced Research Projects Activity (IARPA)
- Defense Advanced Research Projects Agency (DARPA) [W31P4Q-15-1-0015]
- Air Force Office of Scientific Research (AFOSR) [FA9550-15-1-0303]
- National Science Foundation (NSF) [ECS-0335765, ECCS-1306035]
Mid-infrared (mid-IR) frequency combs have broad applications in molecular spectroscopy and chemical/biological sensing. Recently developed microresonator-based combs in this wavelength regime could enable portable and robust devices using a single-frequency pump field. Here, we demonstrate a mode-locked microresonator-based frequency comb in the mid-IR spanning 2.4-4.3 mu m. We observe high pump-to-comb conversion efficiency, in which 40% of the pump power is converted to the output comb power. Utilizing an integrated PIN structure allows for tuning the silicon microresonator and controlling cavity soliton formation via free-carrier detection and control. Our results significantly advance microresonator-based comb technology toward a portable and robust mid-IR spectroscopic device that operates at low pump powers. (C) 2016 Optical Society of America
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