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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Counter-propagating all-normal dispersion (CANDi) fiber laser is an emerginghigh-energy single-cavity dual-comb laser source. Its relative timing jitter(RTJ), a critical parameter for dual-comb timing precision and spectralresolution, has not been comprehensively investigated. In this paper, weenhance the state-of-the-art CANDi fiber laser pulse energy from 1 nJ to 8 nJ.We then introduce a novel reference-free RTJ characterization technique thatprovides shot-to-shot measurement capability at femtosecond precision for thefirst time. The measurement noise floor reaches 1.6x10-7 fs2/Hz, and thecorresponding integrated measurement precision is only 1.8 fs (1 kHz, 20 MHz).With this new characterization tool, we are able to study the physical originof CANDi laser's RTJ in detail. We first verify that the cavity lengthfluctuation does not contribute to the RTJ. Then we measure the integrated RTJto be 39 fs (1 kHz, 20 MHz) and identify the pump relative intensity noise(RIN) to be the dominant factor responsible for it. In particular, pump RIN iscoupled to the RTJ through the Gordon-Haus effect. Finally, solutions to reducethe free-running CANDi laser's RTJ are discussed. This work provides a generalguideline to improve the performance of compact single-cavity dual-comb systemslike CANDi laser benefitting various dual-comb applications.

Unveiling the relative timing jitter in counter propagating all normal dispersion (CANDi) dual-comb fiber laser