A sodium laser emits a light beam of wavelength 589 nm in air, with a beam diameter of 3 mm and emitted power of 50 mW. Evaluate: i) the wavenumber k0, ii) the angular frequency ω, and iii) the peak amplitude of the electric field E0 in the laser spot (you may assume beam divergence due to diffraction is negligible). Give the appropriate SI units in each case.
Compton effect
The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.
Recoil Velocity
The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.
A sodium laser emits a light beam of wavelength 589 nm in air, with a beam diameter of 3 mm
and emitted power of 50 mW. Evaluate:
i) the wavenumber k0,
ii) the angular frequency ω, and
iii) the peak amplitude of the electric field E0 in the laser spot (you may assume beam divergence
due to diffraction is negligible).
Give the appropriate SI units in each case.
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