Question
Asked Nov 3, 2019
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9) The red light from a He-Ne laser has a wavelength of 632.8 nm. Calculate the a) frequency, b) wavevector of this laser beam.

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Expert Answer

Step 1

a) the frequency of laser beam is, 

C
f
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C f

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Step 2

substitute the given values, 

3.0x10 m/s
f =
10m
632.8nm
nm
=4.74x104 Hz
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3.0x10 m/s f = 10m 632.8nm nm =4.74x104 Hz

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Step 3

b)

the wavevector for the la...

2T
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2T

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Advanced Physics

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