how to define the source « k-Wave User Forum

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how to define the source

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Started 3 years ago by XP
Latest reply from Bradley Treeby

XP

Member
Joined: Oct '20
Posts: 1

Hi
I just started doing photoacoustic simulations of red blood cells. The pulse laser of 10ns pulse width is used in the experiment, so when I do the simulation with k-wave, should I use the initial pressure as the source, and then convolution the photoacoustic signal with the Gaussian signal, or directly use the time-varying source of the Gaussian signal? If i use Gaussian time-varying source , is the pulse width of the Gaussian signal the same as that of the laser?

XUPeng

Posted 3 years ago #
Bradley Treeby

Developer
Joined: Mar '10
Posts: 1,640

Hi XUPeng,

Depending on your length scales, the pulse width is probably short enough to assume stress confinement. In this case, you can model this as an initial value problem using source.p0. Otherwise you can assign the time varying source to follow the profile of the Gaussian laser pulse.

Brad.

Posted 2 years ago #

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