Abstract

The time-shift technique, also known as the pulsed-displacement technique, is revisited as a method to measure size, velocity, and relative refractive index of spherical, transparent particles. Building on the basic measurement principle, we introduce several new innovations, making the technique significantly more attractive for use outside of the laboratory. These innovations include two possibilities for velocity measurement, validation criteria for one- and two-detector arrangements, and approaches to achieve higher bandwidths, and, in particular, lower measurable sizes. We discuss numerous optical configuration examples to illustrate the flexibility of this technique to meet various application requirements.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Optical particle sizing in backscatter

Nils Damaschke, Holger Nobach, Nikolai Semidetnov, and Cameron Tropea
Appl. Opt. 41(27) 5713-5727 (2002)

Phase-Doppler interferometry with probe-to-droplet size ratios less than unity. I. Trajectory Errors

Peter A. Strakey, Douglas G. Talley, Subra V. Sankar, and Will D. Bachalo
Appl. Opt. 39(22) 3875-3886 (2000)

Modeling photon transport in turbid media for measuring colloidal concentration in drops using the time-shift technique

Simon Rosenkranz, Walter Schäfer, Cameron Tropea, and Abdelhak M. Zoubir
Appl. Opt. 55(34) 9703-9711 (2016)

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 (14)

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

Tables (2)

You do not have subscription access to this journal. Article tables 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 (14)

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