Femtosecond-driven up-conversion in a radially poled LiNbO3 microresonator

Mikhail Roiz, Christoph S. Werner, Ingo Breunig, Markku Vainio

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Nowadays, there are plenty of different techniques developed for the generation of Optical Frequency Combs (OFCs), but Mode Locked Laser (MLL) OFC is still the most commonly used and commercially available one [1]. Although MLLs are capable of producing very high-peak power OFCs with femtosecond pulse durations, it is sometimes challenging to apply them directly for a number of reasons. First, MLLs typically produce OFCs with repetition frequencies (fr) below 1 GHz, so additional filtering of the unwanted modes is required for the applications in telecommunications, astrocombs etc. Second, many spectral regions - namely mid-infrared, visible and ultraviolet - are difficult to access by MLLs, which implies the use of external parametric up- and down-conversion. One promising platform for such spectral transfer is high Q-factor optical microresonators based on second order (χ(2)) nonlinear crystals, since not only do they provide the desired spectral transfer, but also open up opportunities for the miniaturization of the system. In addition, such microresonators support whispering gallery modes that possess very low mode volumes, making it possible to enhance nonlinear χ(2) processes. This is a significant advantage over the already existing bulk analogs. © 2019 IEEE
Original languageEnglish
Title of host publicationOptics InfoBase Conference Papers : Volume Part F140-CLEO_Europe 2019
PublisherThe Optical Society
Publication date2019
Article number2019-cd_6_5
ISBN (Electronic)9781557528209
Publication statusPublished - 2019
MoE publication typeA4 Article in conference proceedings
EventThe 2019 Conference on Lasers & Electro-Optics / Europe and the European Quantum Electronics Conference (CLEO®/Europe-EQEC) - München, Germany
Duration: 23 Jun 201927 Jun 2019

Fields of Science

  • 113 Computer and information sciences

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