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

Spatial phase filtering based on the intensity-dependent refractive index of PbS nanocomposite film

Not Accessible

Your library or personal account may give you access

Abstract

We demonstrate the use of stable films containing PbS nanocrystals as media for self-adaptive phase filtering in phase contrast imaging of transparent objects by a cost-effective exploitation of nonlinear optical refraction in a simple, all-optical, and self-adjusting 4f imaging system. The optical nonlinearity is characterized by z-scan technique using a continuous wave He–Ne laser as the excitation source. The mechanism of nonlinearity in this case is mainly due to the nonlocal thermo-optical interaction between the laser beam and the sample. The value of nonlinear refractive index coefficient is found to be 3.5×107cm2/W. The nanocomposite material shows a thermal lens effect and is a potential candidate for phase contrast imaging.

© 2009 Optical Society of America

Full Article  |  PDF Article
More Like This
Nonlinear totally reflecting prism coupler: thermomechanic effects and intensity-dependent refractive index of thin films

Hervé Rigneault, François Flory, and Serge Monneret
Appl. Opt. 34(21) 4358-4369 (1995)

Three filters for visualization of phase objects with large variations of phase gradients

Arkadiusz Sagan, Tomasz J. Antosiewicz, and Tomasz Szoplik
Appl. Opt. 48(6) 1143-1152 (2009)

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

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

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

Figures (4)

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

Equations (14)

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

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved