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Modified Z-scan technique using a segmented photodiode
Author(s): Manuel Ferdinandus; Jamie Gengler; Michael Tripepi; Carl Liebig
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Paper Abstract

We develop a modification of the Z-scan technique that simultaneously measures the nonlinear refraction and absorption while using a single detector. This modification utilizes a quadrant cell detector to measure both the change in absorption and spot size due to the optical nonlinearity without the use of a partially closed aperture or second detector. This improves the ease of alignment, requires half the detectors and utilizes all of the available beam power. This modification is especially useful at IR wavelengths, where alignment can be difficult and detector responsivities are low limiting available signal to noise.

Paper Details

Date Published: 4 March 2019
PDF: 8 pages
Proc. SPIE 10902, Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII, 1090217 (4 March 2019); doi: 10.1117/12.2508806
Show Author Affiliations
Manuel Ferdinandus, Air Force Institute of Technology (United States)
Air Force Research Lab. (United States)
Jamie Gengler, Air Force Research Lab. (United States)
UES, Inc. (United States)
Michael Tripepi, The Ohio State Univ. (United States)
Carl Liebig, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 10902:
Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII
Peter G. Schunemann; Kenneth L. Schepler, Editor(s)

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