Abstract

Here, we investigate scanning photothermal microspectroscopic imaging of metal nanoparticles with reflective objectives. We show that correction-less collection of spectra from single spherical nanoparticles embedded in a polymer is possible over a wide spectral band, with large depth of focus, long working distance, and high lateral spatial resolution. We posit that these beneficial characteristics are inherent of the Bessel–Gauss character of the focused beam. When compared with other types of optical microscopy, the combination of these characteristics give photothermal imaging with reflective objectives unique appeal for material characterization applications.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Generation of high conical angle Bessel–Gauss beams with reflective axicons

Pauline Boucher, Jesus Del Hoyo, Cyril Billet, Olivier Pinel, Guillaume Labroille, and François Courvoisier
Appl. Opt. 57(23) 6725-6728 (2018)

Reflecting Objective for Microspectroscopy*

Wayne Thornburg
J. Opt. Soc. Am. 45(9) 740-743 (1955)

Resolution enhancement in confocal microscopy using Bessel-Gauss beams

Louis Thibon, Louis E. Lorenzo, Michel Piché, and Yves De Koninck
Opt. Express 25(3) 2162-2177 (2017)

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 (9)

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 (11)

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