bhartish
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I have pulse frequency as 2.5kHz. How to calculate laser pulse duration at FWHM (full width half maximum)
bhartish said:I have pulse frequency as 2.5kHz. How to calculate laser pulse duration at FWHM (full width half maximum)
Still no.bhartish said:Yes I have average power = 300W, beam spot diameter = 0.37mm, I am using Co2 laser Now can we find?
bhartish said:Yes I have average power = 300W, beam spot diameter = 0.37mm, I am using Co2 laser Now can we find?
bhartish said:Yes I am in lab and I have used 750W peak power laser . I have specification sheet. But I don know peak power per pulse.
I have actually used three parameters in my experiment : Laser power (in terms of duty cycle), pulse frequency and scanning speed.
Sounds reasonable to me, at least for a ballpark value. Though the 750 W is from the spec sheet, not an actual measurement of the laser being used. And I'm not sure if the 300 W figure is from specs or a measurement.AlexLAV said:I don't understand - if the average power is 300 W while the peak one is 750 W, it should mean the pulse duration is about 400/2.5 mus. Am I wrong?
But it should at least give a reasonable estimate. For Gaussian-shaped pulses, it gives a value that is 26% too low.sophiecentaur said:That would work if the pulse were 'flat topped'.
Okay, but the pulse duration is not 400 μsec. That is what the OP would like to find out.morrobay said:So if the pulse is 400 microseconds, 400 x 10-6
and speed of light is 3 x 108meters/second
Then the length segment of the laser pulse is only 120,000 meters