From the abstract: Since the pioneering work of Arthur Ashkin, optical tweezers (OT) have
become an indispensable tool for contactless manipulation of micro- and
nanoparticles. Nowadays OT are employed in a myriad of applications
demonstrating their importance. While the basic principle of OT is the
use of a strongly focused laser beam to trap and manipulate particles,
more complex experimental setups are required to perform novel and
challenging experiments. With this article, we provide a detailed
step-by-step guide for the construction of advanced optical manipulation
systems. First, we explain how to build a single-beam OT on a homemade
microscope and how to calibrate it. Improving on this design, we realize
a holographic OT, which can manipulate independently multiple particles
and generate more sophisticated wavefronts such as Laguerre–Gaussian
beams. Finally, we explain how to implement a speckle OT, which permits
one to employ random speckle light fields for deterministic optical
manipulation.
Wednesday 22 April 2015
Paper published in JOSA B
Our
paper describing how to constuct an advanced optical tweezers experiment has been published as G. Pesce, G. Volpe, O.
M. Maragò, P. H. Jones, S. Gigan, A. Sasso & G. Volpe. 'A
step-by-step guide to the realisation of advanced optical tweezers',
Journal of the Optical Society of America B
32 B84-B98 (2015). This paper forms part of the joint Special Issue of Optics Express and JOSA B on Optical Cooling and Trapping organised by the OSA Technical Group.
From the abstract: Since the pioneering work of Arthur Ashkin, optical tweezers (OT) have
become an indispensable tool for contactless manipulation of micro- and
nanoparticles. Nowadays OT are employed in a myriad of applications
demonstrating their importance. While the basic principle of OT is the
use of a strongly focused laser beam to trap and manipulate particles,
more complex experimental setups are required to perform novel and
challenging experiments. With this article, we provide a detailed
step-by-step guide for the construction of advanced optical manipulation
systems. First, we explain how to build a single-beam OT on a homemade
microscope and how to calibrate it. Improving on this design, we realize
a holographic OT, which can manipulate independently multiple particles
and generate more sophisticated wavefronts such as Laguerre–Gaussian
beams. Finally, we explain how to implement a speckle OT, which permits
one to employ random speckle light fields for deterministic optical
manipulation.
From the abstract: Since the pioneering work of Arthur Ashkin, optical tweezers (OT) have
become an indispensable tool for contactless manipulation of micro- and
nanoparticles. Nowadays OT are employed in a myriad of applications
demonstrating their importance. While the basic principle of OT is the
use of a strongly focused laser beam to trap and manipulate particles,
more complex experimental setups are required to perform novel and
challenging experiments. With this article, we provide a detailed
step-by-step guide for the construction of advanced optical manipulation
systems. First, we explain how to build a single-beam OT on a homemade
microscope and how to calibrate it. Improving on this design, we realize
a holographic OT, which can manipulate independently multiple particles
and generate more sophisticated wavefronts such as Laguerre–Gaussian
beams. Finally, we explain how to implement a speckle OT, which permits
one to employ random speckle light fields for deterministic optical
manipulation.
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