Thermal-light full-field optical coherence tomography in the 1.2 micron wavelength region

Arnaud Dubois (1) , Gael Moneron (1) , Claude Boccara (1)

1 LSLP - Laboratoire de Spectroscopie en Lumière Polarisée

Full-field optical coherence tomography with dynamic focusing correction is demonstrated in the 1.2 µm wavelength region using an Indium Gallium Arsenide area camera as image sensor and a halogen lamp as illumination source. An axial image resolution of 1.6 µm is measured in air (~ 1.1 µm in tissue) which is the best resolution ever achieved in OCT in this wavelength region. En face tomographic images are produced using a phase-shifting method requiring the acquisition of only two phase-opposed interferometric images. In spite of a relatively moderate detection sensitivity of 80 dB within 1.0 s image acquisition time, ultrahigh resolution imaging in highly scattering biological tissues is possible without immersion medium.

Domaines: Optique [physics.optics]

Arnaud Dubois, Gael Moneron, Claude Boccara. Thermal-light full-field optical coherence tomography in the 1.2 micron wavelength region. Optics Communications, 2006, 266, pp.738. ⟨10.1016/j.optcom.2006.05.016⟩. ⟨hal-00520541⟩