Abstract

We report the nonlinear absorption, nonlinear scattering, nonlinear refraction, and optical limiting effects in two semiconductor suspensions formed by nanowires of Bi2S3 and nanometer-sized hollow spheres of CuS with nanosecond incident lasers when the incident photon energy (2.33eV) is above the bandgap. The nonlinear scattering and nonlinear absorption processes were regarded as the mechanisms of the optical limiting effects. With the large positive nonlinear refractive index of those suspensions given by our Z-scan studies, we believed that the nonlinear variation of the refractive index mismatch is one of the reasonable origins of nonlinear scattering. Then, based on the combined effects of nonlinear scattering and absorption, the broadband optical limiting effects in those suspensions were observed. Two Bi2S3 nanowires with different morphologies have similar optical limiting properties.

© 2008 Optical Society of America

Full Article  |  PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

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 OSA member, or as an authorized user of your institution.

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

Figures (6)

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

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

Equations (2)

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

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

Metrics

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

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