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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser
Optics Letters
|March 14, 2015
Abstract:
We demonstrate coherent three-dimensional terahertz imaging by frequency modulation of a quantum cascade laser in a compact and experimentally simple self-mixing scheme. Through this approach, we can realize significantly faster acquisition rates compared to previous schemes employing longitudinal mechanical scanning of a sample. We achieve a depth resolution of better than 0.1 μm with a power noise spectral density below -50 dB/Hz, for a sampling time of 10 ms/pixel.
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