Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume 32, Issue 5, Pages B11-B19Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.32.000B11
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Funding
- Scientific and Technological Research Council of Turkey [111T758, 112T235]
- Marie Curie Career Integration Grant (MC-CIG) [PCIG11 GA-2012-321726]
- COST Actions [MP-1205, IP-1208]
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Optical tweezers have found widespread application in many fields, from physics to biology. Here, we explain in detail how optical forces and torques can be described within the geometrical optics approximation, and we show that this approximation provides reliable results in agreement with experiments for particles whose characteristic dimensions are larger than the wavelength of the trapping light. Furthermore, we provide an object-oriented software package implemented in MATLAB for the calculation of optical forces and torques in the geometrical optics regime: Optical Tweezers in Geometrical Optics (OTGO). We provide all source codes for OTGO as well as documentation and code examples-e.g., standard optical tweezers, optical tweezers with elongated particles, the windmill effect, and Kramers transitions between two optical traps-necessary to enable users to effectively employ it in their research. (C) 2015 Optical Society of America
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