Ultrafast Spectroscopy and Its Applications Enabled by Time-Domain Fourier Optics

Fourier information optics for the ultrafast time domain.

Ultrafast photonic signal processing based on Fourier optics principles offers exciting possibilities to go beyond the processing speeds of electronics technologies for applications in high-speed fiber communications and ultrawideband wireless. I review our recent work on processing of ultrafast optical signals via conversion between time, space, and optical frequency (Fourier) domains. Specifi...

Ultrafast Time-domain Optics

ticle provides a foundation for appreciating some of the key issues that arise in the computational aspects of ultrafast time-domain optics. Because temporal dispersion exists in all materials, it is fundamental to describing the optical field in material bodies when the field is pulsed, especially when the pulse is either ultrashort or ultrawideband. Temporal dispersion implies that the materi...

Ultrafast and versatile spectroscopy by temporal Fourier transform

One of the most remarkable and useful properties of a spatially converging lens system is its inherent ability to perform the Fourier transform; the same applies for the time-lens system. At the back focal plane of the time-lens, the spectral information can be instantaneously obtained in the time axis. By implementing temporal Fourier transform for spectroscopy applications, this time-lens-bas...

Advances in Ultrafast Optics and Imaging Applications

Ultrafast imaging has been a key enabler to many novel imaging modalities, including looking behind corners and imaging behind scattering layers. With picosecond time resolution and unconventional sensing geometries, ultrafast imaging can fundamentally impact sensing capabilities in industrial and biomedical applications. This paper reviews the fundamentals, recent advances, and the future pros...

Ultrafast Time-Resolved Spectroscopy