Power density calculation of Laser

AI Thread Summary
Power density of a laser is calculated by dividing the laser's power by the area over which it is focused. For a Nd:YAG pulsed laser with 420 mJ energy and a 10 ns pulse width focused to a 1 mm spot, the power can be determined using the formula: power = energy/pulse duration. The discussion also explores how to adjust the pulse repetition rate and energy per volt, raising the question of whether pulse duration can be derived from the pulse repetition rate. Understanding these calculations is essential for determining the laser's effectiveness in various applications. Accurate power density calculations are crucial for optimizing laser performance in laboratory settings.
shyamavanil
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Homework Statement


In our Lab we have a Nd:YAG pulsed laser of 420mj ,10 ns pulse width...focused to 1 mm spot

Homework Equations



what's the power density? how it calculate?

The Attempt at a Solution

 
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Power density is the power delivered by the laser per unit area. That means you need to know two things to calculate it:

(1) the laser pulse's power
(2) the area

Can you get the answer now?
 
ideasrule said:
Power density is the power delivered by the laser per unit area. That means you need to know two things to calculate it:

(1) the laser pulse's power
(2) the area

Can you get the answer now?

Tnx bhai Yes i got it..
(1)Is Laser pulse's power = Laser energy /Pulse duration ??

In this machine we can Adjust Pulse repetetion rate and Energy per volt
(2) Is it possible to find out Pulse Duration from this pulse repetetion rate?
 

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