Question

A blue argon ion laser beam with power, P = 50 mW, and wavelength, λ = 488 nm illuminates a white wall at a distance of 100 m. . The laser has a gaussian beam diameter of 700 µm at its output. The wall had a diffuse reflectivity of 0.1% per steradian.

a. What is the laser beam diameter on the wall?

b. What is the highest irradiance on the wall?

c. What is the radiance of the scattered light?

Answer #1

an argon-ion laser(wavelength is 514.5nm, power is 1W) EMMIT A
gaussian tem 00 beam with a minimum spot radium = 2mm, at z=0. What
is the amplitude of the eletric field at the center of the beam,
(r=0, z=0)? wht is the average of the eletric field amplitude?

A laser emits light at power 6.01 mW and wavelength 633 nm. The
laser beam is focused (narrowed) until its diameter matches the
1060 nm diameter of a sphere placed in its path. The sphere is
perfectly absorbing and has density 5.00 × 103
kg/m3. What are (a) the beam intensity
at the sphere's location, (b) the radiation
pressure on the sphere, (c) the magnitude of the
corresponding force, and (d) the magnitude of the
acceleration that force alone would...

A laser emits light at power 5.49 mW and wavelength 633 nm. The
laser beam is focused (narrowed) until its diameter matches the
1230 nm diameter of a sphere placed in its path. The sphere is
perfectly absorbing and has density 5.00 × 103 kg/m3. What are (a)
the beam intensity at the sphere's location, (b) the radiation
pressure on the sphere, (c) the magnitude of the corresponding
force, and (d) the magnitude of the acceleration that force alone
would...

A small laser emits light at power 6.88 mW and
wavelength 441 nm. The laser beam is focused (narrowed)
until its diameter matches the 1255 nm diameter of a
sphere placed in its path. The sphere is perfectly absorbing and
has density 4.00×103kg/m3.
What is the beam intensity at the sphere's location?
Calculate the radiation pressure on the sphere.
Calculate the magnitude of the corresponding force.
Calculate the magnitude of the acceleration that force alone
would give the sphere?

7. A blue laser with a wavelength of 480 nm and a yellow laser
with a wave length of 550 nm illuminates a diffraction grating with
100 rulings per mm. A screen 2 m wide is placed 2 m from the
diffraction grating. A. How many maxima are observed on the screen
from the blue laser? B. What is the distance between the first
maxima of the blue and green light?
Please explain!

A typical helium-neon laser found in supermarket checkout
scanners emits 633-nm-wavelength light in a 1.1-mm-diameter beam
with a power of 1.3 mW .
A) What's the amplitude of the oscillating
electric field in the laser beam?
B) What's the amplitude of the oscillating
magnetic field in the laser beam?

if 1.0 mm diameter argon ion laser beam 514.5nm propagation
through the air at reflective index n =1.000 passes through a
series of three 10.0mm thick pieces of SI-UV suprasil fused silica
reflective index (n= 1.46156) at normal incidence , what is
the intensity of the beam that exits the attenuator? suppose that
the intensity of light passing through this attenuator is used a
measurment of p0 for absorption experment . if two
of three quartiz flats are mistakenly replaced...

You are given a visible laser of wavelength λ to study
interferences of light in the lab.
Consider the 5 situations below. Treat each question
independently
1.In air, you place a screen with two slits, separated by 0.86
mm, in front of the laser of wavelength 507.9 nm. You know that you
will see an interference pattern if you place an observation screen
some distance away. Determine what the distance between the plane
of the fringes and the observation screen...

QUESTION 10
A student took a laser with wavelength 532 nm and pointed the
beam at a fiber. The student then observed the diffraction pattern
on a paper positioned 85.4 cm past the fiber. The central maximum
of the diffraction pattern had a width of 47.8 mm. What is the
diameter of the fiber in micrometers (µm)? (State the answer in
micrometers with 2 digits right of decimal.)
QUESTION 11
A microscope has an objective lens which is circular and...

1.)A manganese vapor laser beam is reflected from the surface of
a CD onto a wall. The brightest spot is the reflected beam at an
angle equal to the angle of incidence. However, fringes are also
observed. If the wall is 1.6 m from the CD, and the first bright
fringe is 0.583 m from the central maximum, what is the spacing (in
m) of grooves on the CD? (Assume a manganese vapor laser has a
wavelength of 534 nm....

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