Thin Film Optics Physics of thin film optics
- Slides: 28
Thin Film Optics • Physics of thin film optics • Important spectral features • Ba. Cu. SF data
Optics basics k wave vector n = index of refraction a = absorption coefficient k = extinction coefficient e = dielectric constant
Bulk sample d Absorption Real sample with surfaces
Thin Film on substrate r 1 n 1=n n 2=s d t 1 r 2 t 2 r 3 t 3 • polarization • angle
Surface reflection and transmission
R & T for real sample(no fringes) surface coeffs multiple bounces
R & T for real sample(w/ fringes)
Deduce Abs Coeff from R & T Transmission normalized to what it “should” have been
Thin Film Interference Fringes n=2. 5, s=1. 5, d=0. 4µm m=2 m=1 Transmission Reflection
Thin Film Interference Fringes n=2. 5, s=1. 5, d=1µm m=7 m=6
Dispersion tightens up fringes n=2. 6+, s=1. 51, d=1µm
Absorption cuts transmission n=2. 6+, s=1. 51, d=1µm, absorption (blue)
Index, absorption model (amorph Si)
Fringes vs angle
Effect of ignoring last surface n=2. 6+, s=1. 51, d=1µm, absorption (blue) red=no substrate, black = w/ substrate
Analysis to find absorption n =2. 6+, s=1. 51, d=1µm blue=abs, red = R+T, black=T/(1 -R)
Determine abs n dispersive, s=1. 51, d=1µm blue=abs, black = T/(1 -R), red=expt abs
Average transmission fringes n dispersive, s=1. 51, d=1µm
Average reflection fringes n dispersive, s=1. 51, d=1µm
Grating Spectrometer
Ba. Cu. SF Transmission
Ba. Cu. SF Gap analysis
Ba. Cu. SF Gap analysis
Ba. Cu. SF R, T Spectra
Ba. Cu. SF Index
Ba. Cu. SF Reflection (th vs expt)
Ba. Cu. SF Transmission (th vs expt)
- Difference between ray optics and wave optics
- Venn diagram of geometric optics and physical optics
- What is thin film in physics
- Wave optics b.sc physics
- Parasite in blood smear
- Coherent and incoherent sources of light
- Opaquant
- Thin film interference
- Interference in thin film
- Pvc membrane film
- Thin film characterization techniques
- Thin film interference
- Interference in thin film
- Ssi small scale integration
- Thin film deposition
- Fiber texture pole figure
- What is thin film
- Slipper or guide bearing
- Modern physics vs classical physics
- University physics with modern physics fifteenth edition
- Ib physics hl ia ideas
- Superconducting devices in quantum optics
- Snells law derivation
- Curtis parry
- Optics
- Disadvantage of fiber optic cable
- Maddox rod
- Modern optics experiment
- Dogguan