What Can We Do with Laser Frequency Combs?

View What Can We Do with Laser Frequency Combs?

Presenter: Theodor Hänsch

Published: July 2014

Age: 18-22 and upwards

Views: 986 views

Tags: laser; frequency; comb; spectroscopy; raman; attosecond

Type: Lectures

Source/institution: Lindau-Nobel


Watch now

The spectrum of a frequency comb, commonly generated by a mode-locked femtosecond laser consists of several hundred thousand precisely evenly spaced spectral lines.  Such laser frequency combs have revolutionized the art measuring the frequency of light, and they provide the long-missing clockwork for optical atomic clocks.  The invention of the frequency comb technique has been motivated by precision laser spectroscopy of the simple hydrogen atom.  The availability of commercial instruments is facilitating the evolution of new applications far beyond the original purpose.  Laser combs are becoming powerful instruments for broadband molecular spectroscopy by dramatically improving the resolution and recording speed of Fourier spectrometers and by creating new opportunities for highly multiplexed nonlinear spectroscopy, such as two-photon spectroscopy or coherent Raman spectroscopy.  Other emerging applications of frequency combs range from fundamental research in astronomy, chemistry, or attosecond science, to telecommunications and satellite navigation.

Also by Theodor Hänsch

Science with Combs of Light
Lectures
1024 views

View more

You may also like

Spectroscopy of C60
Lectures
945 views

Laser Spectroscopy of Hydrogen
Lectures
1038 views

View more