Second-order nonlinear optical processes play a pivotal role in both classical and quantum applications, ranging from extension of the accessible frequencies to generation of quantum entangled photon pairs and squeezed states. ...
Optics & Photonics
Nov 21, 2018
0
160
Graphene Flagship researchers have shown for the first time gate tunable third harmonic generation in graphene. This research, led by Graphene Flagship Partner University of Cambridge, in Collaboration with Politecnico di ...
Nanomaterials
May 22, 2018
0
423
For many guitarists, the rich, warm sound of an overdriven valve amp – think AC/DC's crunchy Marshall rhythm tones or Carlos Santana's singing Mesa Boogie-fuelled leads – can't be beaten.
General Physics
Feb 8, 2017
29
621
Magnetic properties of materials underlie technologies from old-fashioned recording tape to modern hard drives, and scientists are constantly pushing to develop new uses from magnetic behavior. Recently, researchers at MIT ...
Condensed Matter
Oct 26, 2016
0
533
(Phys.org)—In 1876, the Austrian physicist Ludwig Boltzmann noticed something surprising about his equations that describe the flow of heat in a gas. Usually, the colliding gas particles eventually reach a state of thermal ...
A scientist in a crisp, white lab coat and protective eye goggles sits behind a safety shield, controller in hand. In front of him is a powerful titanium-sapphire laser, aimed at a crystal lens. His thumb gently squeezes ...
General Physics
Jun 24, 2015
0
29
A research team has realized one of the long-standing theoretical predictions in nonlinear optical metamaterials: creation of a nonlinear material that has opposite refractive indices at the fundamental and harmonic frequencies ...
Optics & Photonics
Jun 16, 2015
0
84
Human beings have unique voices—from the deep, resonating bass of James Earl Jones to the raspy melodies sung by Broadway star Carol Channing—and we routinely recognize individuals based solely on the way they sound, ...
Plants & Animals
May 18, 2015
0
95
Ultrashort light pulses from modern lasers enable temporal resolution of even the fastest processes in molecules or solid-state materials. For example, chemical reactions can, in principle, be traced down to the 10-fs time ...
Optics & Photonics
Feb 11, 2015
0
16
Mountain glaciers represent one of the largest repositories of fresh water in alpine regions. However, little is known about the processes by which water moves through these systems. In this study published in Geology on ...
Earth Sciences
Oct 28, 2014
0
0
