Nonlinear Optical Behaviour of PbS Nano-Particles
The third-order nonlinearities of PbS nano-dot and nano-belts have been investigated using the Z-Scan technique with nanosecond laser pulses at 532nm. The effect of the PbS semiconductor nanometer-size and spatial forms on the third-order optical nonlinearities and optical limiting properties would be discussed when the nanometer-size were larger than the exciton size. The optical limiting mechanism of materials was discussed in the nanosecond time domain.
Chunli BAI, Sishen XIE, Xing ZHU
Y.D. Zhang et al., "Nonlinear Optical Behaviour of PbS Nano-Particles", Solid State Phenomena, Vols. 121-123, pp. 1367-1370, 2007