Laser power density formula

Æ Á í Æ Á í L 2. Note that for a flat-top beam the formulas are used just as is but for a Gaussian beam there is a factor 2 that multiplies the right hand part of these equations.

Definitions Of Energy Density Used In Powder Bed Fusion Additive Download Table

To get the power density of a 1 mm diameter beam one must simply multiply the power in Watts by 127 cm-2 to get power density in Wcm2.

. The power density is determined by the power of the laser divided by its cross-sectional area or beam size. Gaussian beam intensity is calculated for the 1e2 135 of peak beam diameter. Average power for 5 MHz repetition rate.

111 where n is the number of beam passes η is absorptivity P0. Energy density J c m 2. Most of the current research based on process optimization considering energy density as a standalone parameter which is given by the equation ED P v h t.

Well use the formula for calculating power density of a practical antenna Power Density P D P out G tx 4 π D 2 Given that. Average power for 10 MHz repetition rate. In laser cutting the main process conditions can be incorporated into a single parameter energy density Ed as.

At 1e² it represents approximately 865 of the total power. P out 100W G tx 10 D. I have also attached a file that could help you further.

For beams that are not 100 uniform the peak powerenergy density will be higher. Whether using the laser as a tool or ensuring its safety you dont. Dividing the expression of power density of a 1 mmbeam Power π05mm 2 by an expression of power density as a function of diameter Power π05d 2 we find that.

To be specific energy. You can then use Energy and Power to calculate Energy Density Energy JAreacm2 and Power Density Power WAreacm2. Or Power Density 127Power of 1 mm beam.

Average power density W c m 2 Average power W Beam area c m 2 Average power density W c m 2 Energy per pulse J Repetition rate H z Beam area c m 2 View all. We provide peak power density threshold values for most laser power detectors thanks to a simple calculation relating energy density threshold to the former. Average power increases by same factor as pulse width.

1 Laser energy density laser power laser spot size scan speed The eqn 1 shows that at high scan speed laser energy density is low and may not be sufficient to process the powder bed. Intensity Wattscm2 Laser peak power W Effective focal spot area cm2 Laser fluence Laser energy density defined as the energy which is delivered per region or active. The Power density of laser beam formula is defined as the power contained in per unit area of beam cross section and is represented as PD 4P pif2α2ΔT or Power Density of.

Note that for a flat-top beam the formulas are used just as is but for a Gaussian beam there is a factor 2 that multiplies the.

How To Calculate The Laser Power Density And Laser Energy Density