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

Self-phase modulation in polydiacetylene single crystal measured at 720–1064 nm

Not Accessible

Your library or personal account may give you access

Abstract

Detailed measurement of spectral broadening in a poly-[2,4 hexadiyne-1,6 diol-bis-(p-toluene sulfonate)] (PTS) single crystal owing to self-phase modulation was performed as a function of wavelength by use of a Ti:sapphire laser producing 200-fs pulses at 720–920 nm and a Nd:YAG laser producing 50-ps pulses at 1064 nm. The nonlinear refractive index n2 of PTS at these wavelengths was determined from the measured phase shift. Group-velocity dispersion was estimated and found to have a negligible effect on the observed spectral broadening. The two-photon absorption coefficient α2 over this wavelength range was determined from nonlinear transmission measurements. The largest magnitude of n2 observed at 720 nm was 3.9×10-5cm2/MW. The results show that the magnitude of n2 monotonically decreases as wavelength is increased away from resonance, and two-photon absorption does not make a significant contribution to n2 at off-resonant wavelengths up to 1064 nm.

© 2001 Optical Society of America

Full Article  |  PDF Article
More Like This
Four-photon absorption in the single-crystal polymer bis(paratoluene) sulfonate

Hoon Shim, Mingguo Liu, Chang Hwangbo, and George I. Stegeman
Opt. Lett. 23(6) 430-432 (1998)

Self-induced phase matching in stimulated four-wave mixing in a nonbirefringent single-mode optical fiber

J. Zhang, Q. Li, W. Pan, S. Y. Luo, and Y. L. Chen
Opt. Lett. 26(4) 214-216 (2001)

White-light supercontinuum generation with 60-ps pump pulses in a photonic crystal fiber

Stéphane Coen, Alvin Hing Lun Chau, Rainer Leonhardt, John D. Harvey, Jonathan C. Knight, William J. Wadsworth, and Philip St. J. Russell
Opt. Lett. 26(17) 1356-1358 (2001)

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 (7)

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

Select as filters


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