Skip to main content

Reset your password

Please enter the e-mail address you used to register to reset your password

Note: The verification e-mail to change your password should arrive immediately. However, in some cases it takes longer. Don't forget to check your spam folder.

If you haven't received the e-mail in 24 hours, please contact customerservices@ioppublishing.org

Registration complete

Thank you for registering with Physics World
If you'd like to change your details at any time, please visit My account

Close
Lasers

Lasers

Frequency comb identifies molecules every 20 nanoseconds

18 Dec 2023 Isabelle Dumé
Rainbow-coloured data plot showing the absorbance of light (vertical) over time (horizontal left to right) across a range of frequencies (horizontal forward to back)
A new frequency comb setup can capture the moment-by-moment details of carbon dioxide gas escaping from a nozzle at supersonic speeds in an air-filled chamber, followed by rapid oscillations of gas due to complex aerodynamics within the chamber. The data plot shows the absorbance of light (vertical) over time (horizontal left to right) across a range of frequencies (horizontal forward to back). Courtesy: G. Mathews/University of Colorado Boulder
Frequency combs – specialized lasers that act like a measuring stick for light – are commonly us

You’ve reached the limit of what you can view on Physics World without registering

If you already have an account on Physics World, then please sign in to continue reading

If you do not yet have an account, please register so you can

  • Access more than 20 years of online content
  • Choose which e-mail newsletters you would like to receive
Isabelle Dumé is a contributing editor to Physics World
Read previous

Ultrasound-activated sono-inks could print 3D structures inside the human body
Read next

Thermal transistor could cool down computer chips

Discover more from Physics World

Related jobs

Related events

Copyright © 2024 by IOP Publishing Ltd and individual contributors