"Spicy world of NanoScience"
You need to narrow your question down, considerably. What nanoparticles, of which dimensions? What type of lasers, specifically what output spectrum and what hertz? What is the overall experiment/production process you are attempting?
A quick google search brings up this article, which may be of some interest: http://www.sciencedirect.com/science/article/pii/S0030399210002100
The different between continuous laser and pulsed laser deposition is mainly for surface morphology and thickness, then the optical and electrical properties is can been changed.
Thats a nice question.Actually i'm also searching for this.Generally,we can use pulsed lasers to reduse and increase the size of nano particles by varying the fluence(gold nano we can use Nd-YAG Q switched nano pulsed Laser) by focusing the laser into the nanoparticle colloid --- : Laser ablation method .We can use other pulsed lasers also.