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Femtosecond optical tweezers as sensitive nano-thermometer

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Abstract

Nano-volume temperature rise around optical trap is measured by exploiting non radiative relaxation in solvents. Co-propagating 1560 nm femtosecond laser pulses change solvent temperature and viscosity while trap-stiffness is unaffected during 780 nm trapping.

© 2016 Optical Society of America

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