Article | May 30, 2013

Understanding Beam Profiling Dynamic Range

Laserbeamprofilingsetup

By Ephraim Shafner, Ophir Photonics 

It all started when a slow-witted engineer was teased one too many times. Tired of being the butt of all his colleagues’ jokes, he plotted revenge. “I will create such a convoluted unit for dynamic range that none of them will be able to understand it. We’ll see who’s laughing then. Mwahaha! Instead of simply stating that the range is 20:1 or 3000:1, let’s take the log of that ratio and multiply by 10. Or 20. No one will ever get it straight! I shall call it – the decibel.” (Actually, the decibel was invented in Bell Labs in the 1920s. Although it is convoluted, it’s also a very useful method of measuring wide ranges or ratios.

VIEW THE ARTICLE!
Signing up provides unlimited access to:
Signing up provides unlimited access to:
  • Trend and Leadership Articles
  • Case Studies
  • Extensive Product Database
  • Premium Content
HELLO. PLEASE LOG IN. X

Not yet a member of Photonics Online? Register today.

ACCOUNT SIGN UP X
Please fill in your account details
Login Information
I'm interested in newsletter subscriptions.
ACCOUNT SIGN UP

Subscriptions

Sign up for the newsletter that brings you the industry's latest news, technologies, trends and products.

You might also want to: