lasers

Imaging the Very Large Telescope (ELT) in action. This artist's rendering shows the Extra Large Telescope at night, in action atop Cerro Armazones in northern Chile. The telescope uses lasers to create artificial stars high in the atmosphere. Credit: ESO/L. Calçada

The Very Large Telescope: The largest telescope mirror in the world will bring the stars closer to Earth

The main mirror of the European Southern Observatory's (ESO) Extremely Large Telescope (ELT), known as M1, will be the largest mirror ever built for a telescope. diameter of more than 39 meters, and will consist of
The picture shows an energy band diagram of a micro-resonator based on a GaAs semiconductor as studied in the experiment, in which a quantum condensation of light-matter coupled quasi-particles called exciton-polaritons (exciton-polaritons) - through two-photon absorption. The achievement paves the way for new coherent control schemes and the realization of an efficient laser source in the terahertz (THz) range of electromagnetic radiation

First observation of "two-photon absorption for quantum condensation"

The achievement may accelerate research in new quantum technologies and developments in security, biological sensing, wireless communication and more
Demonstrations of the new method (bottom row) that allows to get closer to the structure of the studied objects (top row) within 100 nanoseconds

Light goes away

Short flashes of light that opened a new world. Zweil (second from the right) with his students Photo: California Institute of Technology

Ahmed Zaweil, the Egyptian researcher who changed the face of the study of fast processes in chemistry, has passed away

The sapphire of the sea. Illustration: German nature artist Ernst Heckel, (1834-1919). From Wikipedia

How did the sea sapphire disappear?

An image of a liquid solution emitting blue laser light. [Courtesy of CSIC and ASCR]

New use of inorganic material to receive blue laser light

The ultimate X-ray machine. Photo: Spencer Lovell

The wonderful X-ray machine / Nora Bera and Philip H. Boxbaum

DE-STAR - A proposal for a system of satellites that will repel or even explode asteroids as they approach the Earth. Image: Philip M. Lubin, University of California at Santa Barbara

Fend off threatening asteroids while still in space using a laser

Right: Prof. Yaron Zilberberg, Eran Shamal and Uri Katz. below the surface

Short term focus

Diagram (left) and scanning electron microscope images of nanolasers grown directly on a silicon surface

Preparation of nanolasers attached to silicon

From the right (standing) Dr. Yevgeni Stambolchik, Prof. Yitzhak Maron, Kristina Stolberg, Guy Rosenzweig, Pesi Meiri. (seated): Dr. Eyal Krupp, Dimitri Mikitchuk

In short - particle accelerators

From left to right: Jingle Liu, Xi-Cheng Zhang, Jianming Dai. Credit: Rensselaer/Daria Robbins

Breakthrough in remote sensing of hidden explosives

Towns and Sholov adjust the maizer. Photo: Bell Laboratories

Laser's 50th birthday

Do the cores of the giant planets contain diamonds?

Rahab Diamonds

Germanium laser. Photo: MIT

The first germanium laser of its kind

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Shorter, faster

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The road to a quantum computer has shortened significantly

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

No more computer hacking - practical quantum encryption

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The Magnet Committee approved a new association: AFL-Advanced Fiber Lasers

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Boeing began firing high-energy laser beams from airplanes

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

How do you slow down the light?

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The laser guns are becoming a reality

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Combat systems - the next generation. Part II