Mid-infrared optical coherence tomography with a stabilized OP-GaP optical parametric oscillator

Jake M. Charsley*, Carl Farrell, Marius Rutkauskas, Peter G. Schunemann, Derryck T. Reid

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

We demonstrate mid-infrared time-domain optical coherence tomography (OCT) with an orientation-patterned GaP optical parametric oscillator. Instantaneous broadband mid-infrared spectra provide reduced scattering for OCT applications including cultural heritage, quality assurance, and security. B-scan calibrations performed across the wavelength tuning range show depth resolutions of 67 µm at 5.1 µm and 88 µm at 10.5 µm. Volumetric imaging inside a plastic bank card is demonstrated at 5.1 µm, with a 1 Hz A-scan rate that indicates the potential of stable broadband OPO sources to contribute to mid-infrared OCT.

Original languageEnglish
Pages (from-to)2882-2885
Number of pages4
JournalOptics Letters
Volume49
Issue number11
Early online date16 May 2024
DOIs
Publication statusPublished - 1 Jun 2024

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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