Question
In: Physics
A small helium-neon laser emits red visible light with a power of 5.30 mW in a...
A small helium-neon laser emits red visible light with a power of 5.30 mW in a beam that has a diameter of 2.30 mm .
A)
What is the amplitude of the electric field of the light?
Express your answer with the appropriate units.
B)
What is the amplitude of the magnetic field of the light?
C)
What is the average energy density associated with the electric field?
Express your answer with the appropriate units.
D)
What is the average energy density associated with the magnetic field?
Express your answer with the appropriate units.
E)
What is the total energy contained in a 1.00-m length of the beam?
Express your answer with the appropriate units.
Solutions
genius_generous answered 2 years agoRelated Solutions
A helium neon laser emits red light of wavelength 632.8 nm, which is obtained when neon...
A helium neon laser emits red light of wavelength 632.8 nm,
which is obtained when neon atoms move from level 5s to level 3p.
Given is a tube that contains 0.25 moles of a helium-neon mix, of
which 15% are neon atoms. Also given is that while the laser is
active, around 2% of the neon atoms are located at one of the two
given energy levels at any time.
a) what is the difference in energy between levels 5s...
The polarization of a helium-neon laser can change with time. The light from a 1.5 mW...
The polarization of a helium-neon laser can change with time.
The light from a 1.5 mW laser is initially horizontally polarized;
as the laser warms up, the light changes to be vertically
polarized. Suppose the laser beam passes through a polarizer whose
axis is 33 ∘ from horizontal.
By what percent does the light intensity transmitted through the
polarizer decrease as the laser warms up?
Express your answer using two significant figures.
The polarization of a helium-neon laser can change with time. The light from a 1.5 mW...
The polarization of a helium-neon laser can change with time.
The light from a 1.5 mW laser is initially horizontally polarized;
as the laser warms up, the light changes to be vertically
polarized. Suppose the laser beam passes through a polarizer whose
axis is 21 ∘ from horizontal. By what percent does the light
intensity transmitted through the polarizer decrease as the laser
warms up?
(Iwarm-Icold)/Icold= ? %
The polarization of a helium-neon laser can change with time. The light from a laser is...
The polarization of a helium-neon laser can change with time.
The light from a laser is initially horizontally polarized; as the
laser warms up, the light changes to be vertically polarized.
Suppose the laser beam passes through a polarizer whose axis is 50
∘ from horizontal.
By what percent does the light intensity transmitted through the
polarizer change as the laser warms up?
A particular laser pointer emits a beam with an average power of 5.00 mW, and the...
A particular laser pointer emits a beam with an average power of
5.00 mW, and the beam has a circular cross-section with a diameter
of 3.00 mm. The beam is linearly polarized. The average intensity
of the light is 707.7 W/m2. Determine the following.
(a) the amplitude of the oscillating electric field in the laser
beam (V/m)
(b) the amplitude of the oscillating magnetic field in the laser
beam (T)
A laser produces 22.0 mW of light. In 4.00 hr , the laser emits 6.04×1020 photons....
A laser produces 22.0 mW of light. In 4.00 hr , the laser emits
6.04×1020 photons. What is the wavelength of the
laser?
A laser produces 25.0 mW of light. In 4.00 hr , the laser emits 6.04×1020 photonsWhat...
A laser produces 25.0 mW of light. In 4.00 hr , the laser emits
6.04×1020 photonsWhat is the wavelength of the laser?
Light at 633 nm from a helium–neon laser shines on a pair of parallel slits separated...
Light at 633 nm from a helium–neon laser shines on a pair of
parallel slits separated by 1.57 ✕ 10−5 m and an interference
pattern is observed on a screen 2.10 m from the plane of the
slits.
1. find angle from central maximum to first bright fringe
2. at what angle from central maximum does the second dark
fringe appear?
3. find the distance (in m) from the central maximum to the
first bright fringe.
Light from a helium-neon laser (? = 633 nm) is used to illuminate two narrow slits....
Light from a helium-neon laser
(? = 633 nm) is used to illuminate two narrow slits.
The interference pattern is observed on a screen 3.3m behind the
slits. Eleven bright fringes are seen, spanning a distance of 54mm
.
What is the spacing (in mm) between the slits?
A laser emits a cylindrical beam of light 4.0 mm in diameter. The average power of...
A laser emits a cylindrical beam of light 4.0 mm in diameter.
The average power of the laser is 2.8 mW . The laser shines its
light on a perfectly absorbing surface.
How much energy does the surface receive in 14 s ?
What is the radiation pressure exerted by the beam?
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