Synthetic aperture laser optical feedback imaging using galvanometric scanning.
We describe a new one-dimensional synthetic aperture imaging laser radar (ladar) using the resonant sensitivity of a microchip laser to frequency-shifted optical feedback and galvanometric scanning of the target under investigation. In our experiment, the laser is both the source and the detector, providing optical amplification with self-aligned heterodyne detection. By using galvanometric scanning, we achieve an along-track spatial resolution better than the diffraction limit.
Witomski
Arnaud
A
Laboratoire de Spectrométrie Physique, Université Joseph Fourier de Grenoble, UMR 5588, 38402 Saint-Martin d'Hères, France.
Lacot
Eric
E
Hugon
Olivier
O
Jacquin
Olivier
O