The Interaction of Solid Particles with Laser Beams
FLORIDA UNIV GAINESVILLE SPACE ASTRONOMY LAB
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Light scattering curves of intensity vs. scattering angle were made of 1 layers of transparent silica particles, 2 single silica particles isolated by optical levitation using an Argon ion laser light source and a goniometer mounted silicon photodiode detector. Scattering measurements of spherical particles demonstrated an excellent agreement with Mie theory. Spheroids and irregular particles were also measured. Dynamics of particles in a space environment were studied both theoretically, and experimentally inside a 10 to the -7th power Torr vacuum chamber. Research in this area will be continued to determine the effective moment arm of optically induced particle rotation. Keywords Laser beam, Particle interaction, Light scattering, Laser particle levitation.
- Lasers and Masers