Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Supercontinuum generation by femtosecond flat-top laser pulses in fused silica

Not Accessible

Your library or personal account may give you access

Abstract

In this work we report the numerical results on the filamentation and supercontinuum (SC) generation of femtosecond flat-top pulses with different steep edges propagating in fused silica. Results show that the filamentation process is determined mainly by the self-steepening effect and ionization, and the SC generation is influenced mainly by the self-steepening effect. The filamentation onset and termination is determined by the leading edge and the tailing edge, respectively. The steeper the leading edge is, the earlier the filamentation onset is; the steeper the tailing edge is, the earlier the filamentation termination is. The cutoff wavelength in the blue-side region of the SC has no obvious difference for the pulses with different leading and tailing edges. But the spectral intensity of the blue extension is much stronger for the pulses with the steeper leading edges. The stronger spectral intensity results from the formation of more steep descending edges during filamentation.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Numerical aperture dependence of damage and supercontinuum generation from femtosecond laser pulses in bulk fused silica

Jonathan B. Ashcom, Rafael R. Gattass, Chris B. Schaffer, and Eric Mazur
J. Opt. Soc. Am. B 23(11) 2317-2322 (2006)

Avalanche ionization during UV filamentation in fused silica: suppression of blueshifted spectra extent

Ya Tian, Cheng Gong, Deyi Kong, and Xiangming Hu
J. Opt. Soc. Am. B 39(9) 2435-2442 (2022)

Femtosecond laser filamentation with a microlens array in air

Tingting Xi, Zhijie Zhao, and Zuoqiang Hao
J. Opt. Soc. Am. B 32(1) 163-166 (2015)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved