Spectral characterization of a frequency comb based on cascaded quadratic nonlinearities inside an optical parametric oscillator

Ville Ulvila, C. R. Phillips, Lauri Halonen, Markku Vainio

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

We present an experimental study of optical frequency comb generation based on cascaded quadratic nonlinearities inside a continuous-wave-pumped optical parametric oscillator. We demonstrate comb states which produce narrow-linewidth intermode beat note signals, and we verify the mode-spacing uniformity of the comb at the Hertz level. We also show that the spectral quality of the comb can be improved by modulating the parametric gain at a frequency that corresponds to the comb mode spacing. We have reached a high average output power of over 4 W in the near-infrared region, at ~2µm.
Original languageEnglish
Article number033816
JournalPhysical Review A: Atomic, Molecular, and Optical Physics
Volume92
Issue number3
DOIs
Publication statusPublished - 10 Sep 2015
MoE publication typeA1 Journal article-refereed

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