L12 Flashcards
1
Q
4-f Imaging System
A
A focused imaging system with unity magnification. Cascade of two Fourier-transforming subsystems.
2
Q
Spatial Fourier Transform
A
- Transforms spatial domain to frequency domain.
- Used in optics for analyzing wave propagation.
3
Q
Fresnel Zone Plate
A
- Device used to focus light using diffraction.
- Consists of concentric rings that alternate between opaque and transparent.
4
Q
Holographic Plasma Lenses
A
- Ultra-high-power laser lenses using plasma.
- Can withstand higher optical densities than glass.
5
Q
National Ignition Facility (NIF)
relevant?
A
- World’s highest-energy laser system.
- Generates temperatures >180 million degrees Fahrenheit
- pressures >100 billion Earth atmospheres.
6
Q
Reflection Hologram
A
- Formed when reference and object beams approach recording material from opposite sides.
- Interference fringes parallel to surface.
7
Q
Transmission Hologram
A
- Formed when reference and object beams approach recording material from the same side.
- Interference fringes perpendicular to surface.
8
Q
Pepper’s Ghost
A
- Stage trick using angled reflective glass.
- Creates ghostly, translucent image by reflecting light from a hidden booth.
