Dual femtosecond laser based multiheterodyne low coherence interferometry

Stefan Kray; Felix Spöler; M. Först; H. Kurz

doi:10.1364/cleo.2009.ctuaa4

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JOURNAL ARTICLE

Dual femtosecond laser based multiheterodyne low coherence interferometry

Stefan Kray Felix Spöler M. Först H. Kurz

Year: 2009 Vol: 26 Pages: CTuAA4-CTuAA4

DOI: 10.1364/cleo.2009.ctuaa4

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Abstract

We present a high-speed, high-resolution, non-mechanical time-domain method for low coherence interferometry, utilizing multiheterodyne detection via two mode-locked femtosecond lasers. Tomographic depth sensing over 150 mm with 5.9 kHz scanning rates and 8 µm depth resolution is demonstrated.

Keywords:

Interferometry Femtosecond Optics Laser Coherence (philosophical gambling strategy) Optical coherence tomography Materials science Resolution (logic) Coherence length Physics Computer science

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Optical Coherence Tomography Applications

Physical Sciences → Engineering → Biomedical Engineering

Photoacoustic and Ultrasonic Imaging

Physical Sciences → Engineering → Biomedical Engineering

Advanced Optical Sensing Technologies

Physical Sciences → Physics and Astronomy → Instrumentation

Dual femtosecond laser based multiheterodyne low coherence interferometry

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