Asynchronous midinfrared ultrafast optical parametric oscillator for dual-comb spectroscopy

Zhaowei Zhang, Chenglin Gu, Jinghua Sun, Chingyue Wang, Tom Gardiner, Derryck T. Reid

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)
128 Downloads (Pure)


Two asynchronous, broadband 3.3 mu m pulse trains with a stabilized repetition-rate difference of up to 5 kHz were generated using an ultrafast optical parametric oscillator. The two oscillation channels, each producing similar to 100 mW average power, ran essentially independently, and weak non-phase-matched sum-frequency mixing between them provided a timing signal that indicated when the asynchronous pulses coincided. The system has immediate applications in incoherent asynchronous optical sampling and, with additional carrier-envelope-offset stabilization, could be applied to coherent dual-frequency-comb spectroscopy. (C) 2012 Optical Society of America

Original languageEnglish
Pages (from-to)187-189
Number of pages3
JournalOptics Letters
Issue number2
Publication statusPublished - 15 Jan 2012


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