Laser Energy and Power Measurement

Authored by: Robert K. Tyson

Handbook of Laser Technology and Applications

Print publication date:  June  2021
Online publication date:  June  2021

Print ISBN: 9781138032613
eBook ISBN: 9781315389561
Adobe ISBN:

10.1201/b21828-34

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Abstract

To fully characterize a laser one must measure the energy and the power or, more specifically, the radiant energy in joules (J) and radiant power or energy flux in J s−1. Due to the nature and diversity of lasers, which operate from the deep ultraviolet to the infrared, from continuous output to picosecond pulses and from microwatts to megawatts, energy-measuring devices encompass a wide range of possibilities [1–3]. Detectors are sensitive to the spectrum of the beam and the speed of energy deposition in their conversion of energy to a useful readable or recordable quantity that can be interpreted as energy or power.

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