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Tag Archives: Optics
Curved Light Channels Have Better Coupling
More frequencies of light can pass between two coupled wavy waveguides than between two coupled straight ones, something that could allow for more flexible designs of optics-based circuits on silicon chips. Continue reading
Mirror Image Pinpoints a Nanoparticle’s Position
A scattered laser beam’s interaction with itself creates a motion-detection method precise enough to determine whether a trapped particle is in its ground state. Continue reading
Unpolarized Light Could Separate Chiral Molecules
Numerical simulations suggest that unpolarized light with a twisted phase could help sort left- and right-handed molecules into separate ring-shaped traps. Continue reading
Laser Breaks Liquid into Uniform Droplets
A laser beam hitting a column of liquid controls the droplet pinch-off at the bottom of the stream. Continue reading
Ricocheting Waves Pinpoint an Object’s Location
An echo chamber captures small-scale information about an object without the need for up-close probing. Read more in APS Physics…
Optical Fiber Modes Resist Deformations
A machine-learning approach quickly characterizes an optical fiber, identifying transmission channels that aren’t affected by deformation. Continue reading
Light Pulses Change Speed in a Plasma
Interactions between two laser beams in a plasma allow for precise
control over the light’s velocity. Continue reading
A tabletop waveguide delivers coherent x rays
The layered anode emits bright, directed beams without the need for mirrors or large-scale accelerators. Continue reading
Femtosecond Probe Catches Electrons Relaxing
Pump-probe experiments measure the time it takes for electrons to thermalize and cool after photoexcitation. Continue reading
Pulses of Light Accelerate in Free Space
A recipe for greatly accelerating a light pulse involves sculpting its
spectrum in space and time. Continue reading
Rachel Berkowitz 