English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Dissipative Kerr solitons (DKS) in optical microresonators provide a highlyminiaturized, chip-scale frequency comb source with unprecedentedly highrepetition rates and spectral bandwidth. To date, such soliton frequency combsources have been successfully applied in the optical telecommunication bandfor dual comb spectroscopy, coherent telecommunications, counting of opticalfrequencies and distance measurements. Yet the range of applications could besignificantly extended by operating in the near-infrared spectral domain, aprerequisite for biomedical and Raman imaging applications, and a part of thespectrum which hosts commonly used optical atomic transitions. Here wedemonstrate the operation of photonic chip-based soliton Kerr combs pumped with1 micron laser light. By engineering the dispersion properties of a $\rmSi_3N_4$ microring resonator, octave-spanning soliton Kerr combs extending to776 nm are attained, thereby covering the optical biological imaging window.Moreover, we demonstrate that soliton states can be generated in normal groupvelocity dispersion regions, when exploiting mode hybridization with other modefamilies. The reported near-infrared soliton Kerr combs are suitable for arange of studies, including frequency-comb-based optical coherence tomography,coherent anti-Stokes Raman spectro-imaging, and they spectrally overlap withoptical atomic transitions in Alkali vapors.

Photonic chip-based soliton frequency combs covering the biological imaging window