Abstract

It has long been thought that normal group-velocity dispersion (GVD) cannot be produced in free space via angular dispersion. Indeed, conventional diffractive or dispersive components such as gratings or prisms produce only anomalous GVD. We identify the conditions that must be fulfilled by the angular dispersion introduced into a plane-wave pulse to yield normal GVD. We then utilize a pulsed-beam shaper capable of introducing arbitrary angular-dispersion profiles to symmetrically produce normal and anomalous GVD in free space, which are realized here on the same footing for the first time, to our knowledge.

© 2021 Optical Society of America

Space–time wave packets violate the universal relationship between angular dispersion and pulse-front tilt

Layton A. Hall, Murat Yessenov, and Ayman F. Abouraddy
Opt. Lett. 46(7) 1672-1675 (2021)

Temporal Talbot effect in free space

Layton A. Hall, Sergey Ponomarenko, and Ayman F. Abouraddy
Opt. Lett. 46(13) 3107-3110 (2021)

Simulation of near-diffraction- and near-dispersion-free OAM pulses with controllable group velocity by combining multiple frequencies, each carrying a Bessel mode

Kai Pang, Kaiheng Zou, Hao Song, Zhe Zhao, Amir Minoofar, Runzhou Zhang, Haoqian Song, Huibin Zhou, Xinzhou Su, Cong Liu, Nanzhe Hu, Moshe Tur, and Alan E. Willner
Opt. Lett. 46(18) 4678-4681 (2021)

Group-velocity-dispersion engineering of tantala integrated photonics

Jennifer A. Black, Richelle Streater, Kieran F. Lamee, David R. Carlson, Su-Peng Yu, and Scott B. Papp
Opt. Lett. 46(4) 817-820 (2021)

Group-velocity dispersion emulator using a time lens

Xinyi Zhu, Luis Romero Cortés, and José Azaña
Opt. Lett. 46(23) 5974-5977 (2021)