Presentation title:

Compressed Ultrafast Spectral-Temporal Photography

Abstract:

Acquiring ultrafast and high spectral resolution optical images is key to measure transient physical or chemical processes, such as photon propagation, plasma dynamics, and femtosecond chemical reactions. In this talk, we will introduce a compressed ultrafast spectral-temporal (CUST) photographic technique, enabling both an ultrahigh frame rate of trillion Hz and a large frame number. Using spectral-temporal coupling, CUST photography can record multiple frames with a subnanometer spectral resolution with a single laser exposure, enabling ultrafast spectral imaging. CUST photography with high frame rate, high spectral resolution, and high frame number in a single modality offer a new tool for observing many transient phenomena with high temporal complexity and high spectral precision.

Brief Bio: 

Feng Chen 

Full professor of Xi'an Jiaotong University, where he directs the Ultrafast Photonic Laboratory (UPL) and has severed as director of Shaanxi Key Laboratory of Photonics Technology for Information (PTI), the vice-director of the International Joint Research Lab for Micro/Nano Manufacturing and Measurement Technologies. His current research interests are femtosecond laser microfabrication, bionic fabrication and ultrafast imaging. Dr. Chen has published more than 300 peer-reviewed papers including Chem. Sco. Rew., Adv. Funct. Mater.,  Phys. Rev. Lett. etc.