= Arthur Ashkin
{c}
{tag=Physicist}
{title2=1922–2020}
{wiki}
= A. Ashkin
{c}
{synonym}
<Arthur Ashkin> demonstrated that <radiation pressure> from a continuous <laser> could accelerate and trap microscopic particles. This made transfer of optical <momentum> a tool for controlling matter rather than merely a correction to optical measurements. Later, he and collaborators demonstrated a single-beam gradient-force <optical trap>: a strongly focused beam held dielectric particles in <water>. The <optical tweezers> arrangement balances the restoring effect of the intensity gradient against the forces tending to push the particle away.<Acceleration and Trapping of Particles by Radiation Pressure by Arthur Ashkin>[1970 abstract: acceleration and stable optical potential wells]{ref}<Observation of a single-beam gradient force optical trap for dielectric particles by Arthur Ashkin and others>[1986 abstract: single-beam trapping in water]{ref}
A <physicist> who researched <nonlinear optics> and <optical trapping> at Bell Laboratories.<In Memoriam: Arthur Ashkin, 1922–2020 by Optical Society>[Independent professional identity]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Arthur%20Ashkin%20EM1B5678%20%2844417135450%29%20%28adjusted%29.jpg?width=250]
{title=Portrait of <Arthur Ashkin>}
{description=Bengt Nyman; existing crop, resizing, levels, color and sharpening by WikiPedant. https://creativecommons.org/licenses/by/2.0/[Creative Commons Attribution 2.0 Generic.], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Arthur_Ashkin_EM1B5678_(44417135450)_(adjusted).jpg}
{width=250}
Back to article page
