NOBEL PRIZE 2023 IN PHYSICS: METHODS THAT GENERATE ATTOSECOND PULSES OF LIGHT

It was awarded to Pierre Agostini, Ferenc Krausz and Anne L’Huillier “for experimental methods that generate attosecond pulses of light for the study of electron dynamics in matter.”

» L’Huillier is only the fifth woman to win a Nobel Prize in Physics.

About Attosecond

» Electrons are the negatively charged particles of an atom.

» The movements of electrons inside atoms and molecules are so rapid that they are measured in attoseconds.

» An attosecond is equivalent 10 to the power of minus 18 seconds (10−18 seconds).

» Just as the naked human eye cannot discern the individual beats of a hummingbird’s wing, scientists were not able to observe the individual movements of an electron.

About the Discovery (ATTOSECOND PULSES OF LIGHT)

» Scientists have demonstrated a way to create extremely short pulses of light.

» These pulses can be used to provide images of the processes inside atoms and molecules.

» They used precision lasers to generate ultra-short bursts of light.

» They discovered a new effect from a laser light’s interaction with atoms in a gas.

» This effect can be used to create shorter pulses of light than were previously possible.

APPLICATIONS OF ATTOSECOND PULSES OF LIGHT

Open ups the new research field of attosecond physics.

To explore short-lived atomic and molecular processes in fields like materials science, electronics, and catalysis.

For medical diagnostics, to check for the presence of certain molecules.

To develop faster electronic devices, and better telecommunications, imaging, and spectroscopy.

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