TY - GEN
T1 - Aerosol tweezing with a super-continuum laser beam
AU - Guillon, Marc
AU - Dholakia, Kishan
AU - McGloin, David
PY - 2008
Y1 - 2008
N2 - Aerosol tweezing with a super-continuum laser source has been successfully demonstrated. Salt-water droplets in the range between 3 and 7 microns in diameters are trapped with a 300nm-wide super-continuum spectrum. As the spectrum covers a few Mie resonances, the optical force is averaged and the trapping efficiency varies smoothly with the square of the radius as in the case of the ray optics approximation. On-axis elastically back-scattered spectrum allows a direct and precise determination of the trapped droplet. Evaporation of a single droplet is precisely followed using this method. Alternative spectroscopic droplet sizing techniques are proposed and discussed.
AB - Aerosol tweezing with a super-continuum laser source has been successfully demonstrated. Salt-water droplets in the range between 3 and 7 microns in diameters are trapped with a 300nm-wide super-continuum spectrum. As the spectrum covers a few Mie resonances, the optical force is averaged and the trapping efficiency varies smoothly with the square of the radius as in the case of the ray optics approximation. On-axis elastically back-scattered spectrum allows a direct and precise determination of the trapped droplet. Evaporation of a single droplet is precisely followed using this method. Alternative spectroscopic droplet sizing techniques are proposed and discussed.
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U2 - 10.1117/12.793726
DO - 10.1117/12.793726
M3 - Conference contribution
AN - SCOPUS:56249120984
SN - 9780819472588
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Optical Trapping and Optical Micromanipulation V
T2 - Optical Trapping and Optical Micromanipulation V
Y2 - 10 August 2008 through 13 August 2008
ER -