arXiv subjects

Daryl Spencer

Publications and source records attributed to Daryl Spencer.

2 recordsLinked to original sources

arXiv2026

Institutionalizing Best Practices in Research Computing: A Framework and Case Study for Improving User Onboarding

Research computing centers around the world struggle with onboarding new users. Subject matter experts, researchers, and principal investigators are often overwhelmed by the complex infrastructure and software offerings designed to support diverse research domains at large academic and national institutions. As a result, users frequently fall into confusion and complexity to access these resources, despite the availability of documentation, tutorials, interactive trainings and other similar resources. Through this work, we present a framework designed to improve new-user onboarding experience. We also present an empirical validation through its application within the Research Infrastructure Services at Washington University in St. Louis.

cs.OH↗

arXiv2018

Thermal and Nonlinear Dissipative-Soliton Dynamics in Kerr Microresonator Frequency Combs

We explore the dynamical response of dissipative Kerr solitons to changes in pump power and detuning and show how thermal and nonlinear processes couple these parameters to the frequency-comb degrees of freedom. Our experiments are enabled by a Pound-Drever-Hall (PDH) stabilization approach that provides on-demand, radiofrequency control of the frequency comb. PDH locking not only guides Kerr-soliton formation from a cold microresonator, but opens a path to decouple the repetition and carrier-envelope-offset frequencies. In particular, we demonstrate phase stabilization of both Kerr-comb degrees-of-freedom to a fractional frequency precision below 10^-16, compatible with optical-timekeeping technology. Moreover, we investigate the fundamental role that residual laser-resonator detuning noise plays in the spectral purity of microwave generation with Kerr combs.

physics.optics↗