Time-domain optical coherence tomography at 2 $mumathrm{m}$ using GaSb-based broadband superluminescent diode

arXiv:2601.22261v1 Announce Type: new
Abstract: We report a time-domain optical coherence tomography (TD-OCT) system operating in the 2 $mumathrm{m}$ spectral region, enabled by a GaSb-based superluminescent diode (SLD). The spectrum emitted by the SLD exhibits a full-width half-maximum (FWHM) of $sim$80 nm centred near 2.1 $mumathrm{m}$. For OCT operation, stable amplified spontaneous emission with low spectral ripple ($