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Flashcards in Interferometry Deck (26):
1

Young double slit is interference by _________

Division of wavefront

2

Thin film interference is interference by division of _______

Amplitude

3

Youngs double slit uses ________ light

Monochromatic

4

Thin film interference uses _______ light

Polychromatic

5

Youngs double slit uses what kind of source

Mutually coherent source

6

Thin film interference uses what kind of source

Incoherent

7

What kind of wave interference is there in youngs double slit

Two wave interference

8

What kind of interference is there in thin film interference

Multiple wave interference (wave effect)

9

Path difference in youngs double slit

Dsin0=mlambda

10

Path diffference in thin film interference

2t=mlambda
Thickness is t=lambda/4n
Phase change
Material on both sides

11

Do both youngs double slit and thin film interference boy law of conservation of energy?

Yes

12

Instruments based on the principle of interference of light are known as this

Interferometers

13

Applications of interferometers

-optical testing like surface roughness, flatness, curvature, etc
-wavelength of light
-thickness of thin strips
-optical aberrations of lenses, glassses etc
-small displacements
-refractive index changes
-spectroscopy

14

What has interferometry been used for

For a long time in the astronomical telescopes, optics industry, and recently in biological imaging

15

What can be used to determine if a coherent beam of light is collimated?

Shearing interferometers

16

Optical surface profile measurement using interferometry

Surface profile shows the design and manufacturing defects before thousands of lenses are made

17

Michelson interferometer is a division of ________

Amplitude

18

Efficiency of Michelson interferometer is

50%

19

What is the path difference for the interferometer?

2d

20

For minimum energy in michelson interferometer

2d=mlambda

21

For maximum energy in michelson interferometer

2d=(m+1/2)lambda

22

Optical coherence tomography

Noninvasive interferometric imaging modality that provides significantly higher sensitivity and axial resolution than the conventional imaging systems

23

What could become the new clinical standard for measuring the corneas refractive power?

OCT

24

Completel anterior and posterior lens OCT

Full range imaging of eye accommodation by high speed long depth range optical frequency domain imaging

25

What is OCT useful for?

Finding abnormalities in the retinal layers non invasively. Shows exactly what layer of the retina the damage is in

26

LIGO

Michael son interferometry