About This Webinar
Femtosecond frequency combs represent unparalleled measurement tools with diverse applications in spectroscopy, metrology, and quantum physics. This discussion delves into the critical aspects of maximizing the passive stability of these instruments to unlock their full potential in fundamental science and high-tech industries. By studying the noise properties of fiber-based frequency combs across varying intracavity dispersion, pump power, and repetition rate parameters, researchers have notably identified distinct minima where the free-running linewidth of the carrier-envelope offset (CEO) frequency (fCEO) drops below 1 kHz. A comprehensive analysis of individual comb lines across a broad spectral range unveils the specific contributions to phase noise and their interplay. Leveraging these insights, this presentation showcases the development of frequency combs with sharp teeth at designated positions throughout the spectrum from fCEO to 300 THz. These compact systems offer ultrabroadband stability, presenting a new standard for front-end measurement, such as integrated quantum clock experiments based on Strontium atoms.
Who should attend:
Researchers, engineers, and manufacturers who are interested in fiber-based frequency comb technology. Those who work with spectroscopy, metrology, and quantum physics in industries such as aerospace, biophotonics, medicine, and semiconductors.
About the presenter:
Saeed Pegahan, Ph.D., is an application scientist at TOPTICA Photonics Inc., focusing on optical frequency combs and laser referencing techniques. As a frequency comb scientist, he works on a broad range of applications, including clocks, quantum sensing, and spectroscopy. In 2020, Pegahan earned his doctorate from North Carolina State University, where he conducted extensive research on ultracold Fermi atoms with Professor John Thomas. During his postdoctoral research, he collaborated with a diverse team of atomic and nuclear scientists at Jefferson National Lab and William & Mary on multiple projects using room-temperature Rydberg atoms to track charged particles. In January 2024, Pegahan was selected as a vice chair of the Enabling Technologies Technical Advisory Committee (TAC) at the Quantum Economic Development Consortium (QED-C), where he identifies gaps and supports enabling technology R&D to enhance the quantum ecosystem. Since joining TOPTICA, he has been involved in configuring various frequency comb systems for different quantum platforms, including neutral atoms and trapped ions. Beyond his primary focus, Pegahan is also involved in new product developments such as frequency combs and custom laser referencing products.
About the sponsor:
TOPTICA develops and manufactures high-end laser systems for scientific and industrial applications. The portfolio includes diode lasers, ultrafast fiber lasers, terahertz systems, and frequency combs. OEM customers, scientists, and over a dozen Nobel laureates all acknowledge the world-class exceptional specifications of TOPTICA’s lasers, as well as their reliability and longevity.