Abstract

We theoretically investigate the effects of sample dispersion on the focusing of ultrashort laser pulses. Both the conventional point focusing and temporal focusing are studied. The influence of laser parameters, objective lenses, and sample materials is discussed in detail. The sample dispersion introduces spatial and temporal distortions to the laser focus, and reduces the focal intensity. These effects are more significant when a laser with a shorter pulse duration is focused into the sample at a larger depth. The presented results show the significance of sample dispersion effects in different scenarios, and look to inform on a proper choice of specific focusing method in practical cases.

© 2015 Optical Society of America

Effects of aberrations in spatiotemporal focusing of ultrashort laser pulses

Bangshan Sun, Patrick S. Salter, and Martin J. Booth
J. Opt. Soc. Am. A 31(4) 765-772 (2014)

Effect of wavefront rotation on the photoionization process by ultrafast laser spatiotemporal focusing

Yuedong Li, Juan Song, Qinxiao Zhai, Weiyi Yin, Xinlan Tang, and Ye Dai
J. Opt. Soc. Am. B 38(4) 1040-1047 (2021)

Spatial and temporal transformation of femtosecond laser pulses by lenses and lens systems

M. Kempe, U. Stamm, B. Wilhelmi, and W. Rudolph
J. Opt. Soc. Am. B 9(7) 1158-1165 (1992)

Delivery of focused short pulses through a multimode fiber

Edgar E. Morales-Delgado, Salma Farahi, Ioannis N. Papadopoulos, Demetri Psaltis, and Christophe Moser
Opt. Express 23(7) 9109-9120 (2015)

Effects of a gas medium on ultrafast laser beam delivery and materials processing

Ju Sun and Jon P. Longtin
J. Opt. Soc. Am. B 21(5) 1081-1088 (2004)