An underwater chaotic lidar sensor based on synchronized blue laser diodes
We present a novel chaotic lidar system designed for underwater impulse response measurements. The system uses two recently introduced, low cost, commercially available 462 nm multimode InGaN laser diodes, which are synchronized by a bi directional optical link. This synchronization results in a noise like chaotic intensity modulation with over 1 GHz bandwidth and strong modulation depth. An advantage of this approach is its simple transmitter architecture, which uses no electrical signal generator, electro optic modulator, or optical frequency doubler.
SPIE Defense Security