Question

diffraction grating material and application?

Types of diffraction grating and their production
methods?

Answer #1

Optical element that diffract energy into the consistent wavelength is called the diffraction grating .There are basically two types of diffraction grating

1) ruled grating

2) holographic grating

Ruled grating : basically it is produced by a ruling engine which cut those grooves into coasting on grating substrate.

Holographic grating : it is produced by an interference lithography that result a smooth groove surface and eliminate those periodic error that occur in the previous method

Diffraction grating can be a reflection or transmission grating . Reflection grating is coated with reflective coating whereas in transmission coating there is an antireflection coating

Replica grating is commercial diffraction grating produced from sub master.

The diffraction grating produce Spectra that means it slit a polychromatic light into consistent color .it is also used in pulse compression

Infrared light emitted by a cooling mass of radioactive material
is incident on a diffraction grating with 6500 lines/cm and
produces a first-order maximum at 17°. How many maxima will occur
in total?

A laser with a wavelength of 532 nm is aimed horizontally at a
diffraction grating with 580 grooves per mm in a large, dark room.
The grooves are oriented vertically. The laser is 2.7 m away from
the diffraction grating, while a flat, white wall is 3.9 m behind
the diffraction grating. Describe what appears on the wall and
where.

White light is spread out into its spectral components by a
diffraction grating. If the grating has 2055 lines per centimeter,
at what angle does red light of wavelength 640 nm appear in
first-order spectrum? (Assume that the light is incident normally
on the grating.)
°

Image a square aperture of width 149 \[Mu]m, 2775 mm away from a
diffraction grating with a groove spacing of 1888 grooves/mm. You
illuminate the diffraction grating by sending polychromatic light
where the wavelengths are relatively close together and the average
wavelength is 1037 nm through the square aperture onto the
diffraction grating. What is the resolving power of the diffraction
grating for second order light in this setup? (Assume the
diffraction pattern is a Fraunhofer diffraction pattern.)

A diffraction grating is made up of slits of width 400 nm with
separation 1100 nm. The grating is illuminated by monochromatic
plane waves of wavelength λ = 720 nm at normal incidence.
(a) How many maxima are there in the full
diffraction pattern? (b) What is the angular width
of a spectral line observed in the first order if the grating has
960 slits?
Question 2 :
A diffraction grating is made up of slits of width a
with...

A diffraction grating is made up of slits of width 400 nm with
separation 1100 nm. The grating is illuminated by monochromatic
plane waves of wavelength λ = 720 nm at normal incidence.
(a) How many maxima are there in the full
diffraction pattern? (b) What is the angular width
of a spectral line observed in the first order if the grating has
960 slits?

A diffraction grating is made up of slits of width 440
nm with separation 1300 nm. The grating is illuminated by
monochromatic plane waves of wavelength λ = 810 nm at normal
incidence. (a) How many maxima are there in the
full diffraction pattern? (b) What is the angular
width of a spectral line observed in the first order if the grating
has 1300 slits?

1) How would the interference pattern produced by a
diffraction grating change if the laser light changed from red to
blue?
2) How do the interference patterns produced by a CD and
diffraction grating compare? Explain similarities, differences, and
causes in your answer.

A diffraction grating has 1.3 ?m spacing. Find the
first-order diffraction angles for the following wavelengths.
Part A: Find the first-order diffraction angles for orange light
(615 nm ).
Part B: Find the first-order diffraction angles for green light
(540 nm ).
Part C: Find the first-order diffraction angles for red light
(680 nm ).

A diffraction grating has 1 250 rulings/cm. On a screen 1.50 m
from the grating, it is found that for a particular order
m, the maxima corresponding to two closely spaced
wavelengths of sodium (589.0 nm and 589.6 nm) are separated by 0.36
mm. Determine the value of m.
m =

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