Primes CUBE User Manual

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Revision 10 EN - 03/2021
12.2.2 Maximum permissible power density
To avoid damage to the absorber, the maximum permissible power density at the ab-
sorber must not be exceeded. The permissible power densities vary depending on the
beam diameter and the type of absorber installed.
A list of the permitted power densities is given in chapter19, „Technical data“, on
page50.
The power density in kW/cm² is calculated according to the formula:
Formula 1: Calculation of the power density
To determine the maximum laser power, the result is weighted with a safety factor of2.
The safety factor compensates the ratio of maximum to average power density. The
maximum permissible laser power in kW depending on the beam radius is calculated
according to the formula:
Formula 2: Calculation of the permissible laser power depending on the beam diameter
Example: With a beam diameter of 3-1.5mm, a device with advanced absorber can
absorb a maximum power density of 10kW/cm². For a beam diameter of 3mm (beam
radius 0.15cm), the maximum permissible laser power is calculated as follows:
P in kW = 10kW/cm² · π · 0.15cm · 0.15 cm · 0,5 = 0.353kW = 353 W
Fig. 12.3: Example calculation
For a quick determination of the maximum permissible laser power as a func-
tion of the beam diameter is given in chapter21, „Appendix“, on page53
with two diagrams.

Primes CUBE Specifications

General

Brand	Primes
Model	CUBE
Category	Measuring Instruments
Language	English