Abstract

A novel technique for obtaining differential images with a scanning microscope by using a two-mode optical fiber is proposed. It is shown that both the differential amplitude and the differential phase images can be obtained by adjusting the differential phase delay between the fiber modes. The technique is demonstrated experimentally, and differential images of a specimen consisting of sharp edges in both amplitude and phase reflectivity are presented.

© 1992 Optical Society of America

Surface profiling with scanning optical microscopes using two-mode optical fibers

R. Juškaitis and T. Wilson
Appl. Opt. 31(22) 4569-4574 (1992)

Confocal scanning optical microscope using single-mode fiber for signal detection

Shigeharu Kimura and Tony Wilson
Appl. Opt. 30(16) 2143-2150 (1991)

Fiber-optic confocal microscope: FOCON

Tim Dabbs and Monty Glass
Appl. Opt. 31(16) 3030-3035 (1992)

Scanning heterodyne confocal differential phase and intensity microscope

Michael G. Somekh, M. Salim Valera, and Roland K. Appel
Appl. Opt. 34(22) 4857-4868 (1995)

Differential amplitude scanning optical microscope computer aided for linewidth measurements

E. A. Bozhevolnaya, S. I. Bozhevolnyi, and A. V. Postnikov
Appl. Opt. 31(32) 6836-6839 (1992)