A beam from a HeNe laser 6328 nm is traveling along the za

A beam from a HeNe laser ( = 632.8 nm) is traveling along the z-axis and has a waist w0 = 0.1 mm at z = 0. Find the phase of the wave (modulo 2 ) at z = zR, x = w(z = zR), y = 0.

Solution

A beam from a HeNe laser ( = 632.8 nm) is traveling along the z-axis and has a waist w0 = 0.1 mm at z = 0

y = A sin ( k x t ) y=Asin(kxt)

in this way I can\'t help suspecting that y is the plentifulness of the wave at a given time and separation along the string. It would appear that you\'ve befuddled adequacy (tallness) with stage! Simply connecting to values for x and t into that comparison will give you the plentifulness. On account of plane waves, for example, yours, the stage is a discretionary steady identified with where you put the zero of your tomahawks. So truly it doesn\'t bode well to ask what is the stage at a specific point or time since it is a consistent. Be that as it may, you are right, for the wave given the stage has been set to zero. On the off chance that it wasn\'t set to zero your wave might resemble this:

y = A sin ( k x t + C ).

the phase of the wave (modulo 2 ) at z = zR, x = w(z = zR), y = 0.