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8 October 2004Solvent effect and wavelength effect of laser-synthesized carbon nanoparticle colloids on optical limiting
We report the optical limiting response of carbon nanoparticle colloids in different organic solvents. The carbon nanoparticles were prepared by Nd:YAG laser ablation of carbon target immersed in ethanol. Optical limiting properties towards 532 and 1064 nm wavelengths were measured with a 7-ns pulsed Nd:YAG laser. Strong optical limiting effect was detected for the carbon nanoparticle colloids within a solvent having low thermal conductivity. The limiting effect at 532 nm is stronger than that at 1064 nm. Possible mechanisms of optical limiting were discussed.
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G. X. Chen, Ming Hui Hong, Z. B. Wang, H. I. Elim, W. Z. Chen, Hwee Ming Lam, Wei Ji, Tow Chong Chong, "Solvent effect and wavelength effect of laser-synthesized carbon nanoparticle colloids on optical limiting," Proc. SPIE 5662, Fifth International Symposium on Laser Precision Microfabrication, (8 October 2004); https://doi.org/10.1117/12.595849