Abstract

Three methods for direct measurement of the intensity distribution in laser beams focused by microscope optics to waists of submicron width are described and compared. They use scans of the beam waist with (1) a knife-edge, (2) a submicroscopic point fluorescent source, and (3) convolution scans generated by the photobleached pattern of the focused beam. An indirect photographic technique is also evaluated. The laser beam is found to propagate ideally down to a minimum size usually limited by the aberrations of the optics.

© 1981 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Characterization of microscopic laser beams by 2-D scanning of fluorescence emission

Alan H. Stolpen, Carl S. Brown, and David E. Golan
Appl. Opt. 27(21) 4414-4422 (1988)

Knife-edge scanning measurements of subwavelength focused light beams

A. H. Firester, M. E. Heller, and P. Sheng
Appl. Opt. 16(7) 1971-1974 (1977)

Spatial–spectral characterization of focused spatially chirped broadband laser beams

Michael J. Greco, Erica Block, Amanda K. Meier, Alex Beaman, Samuel Cooper, Marin Iliev, Jeff A. Squier, and Charles G. Durfee
Appl. Opt. 54(33) 9818-9822 (2015)

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

Tables (1)

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 (5)

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