1. Holography Jeremy Ritter Department of Physics University of Texas at Austin

2. Overview Demonstrate ◦Coherence ◦Interference Create Holograms ◦Holographic Camera ◦Developing

3. Dennis Gabor Born 1900 ◦Budapest, Hungary Holography research ◦Electron Microscope Nobel Prize ◦1971

4. Coherence Temporal Coherence ◦Single frequency Spatial Coherence ◦Constant amplitude Coherence length ◦Length over which the phase and amplitude of wavefronts does not change significantly

5. Interference Superposition Relative phase Interference pattern

6. Laser First working laser ◦Maiman, 1960 Coherent ◦A few centimeters up to kilometers First laser holograms ◦Leith and Upatnieks, 1963

7. Transmission Hologram Beams on the same side of the hologram Emulsion lines up perpendicular to plane

8. Reflection Hologram Beams on opposite sides of the hologram Emulsion lines up parallel to the plane

9. Vibration Stability Isolation Table ◦Solid marble base ◦Steel optical isolation table Optical instruments ◦Notched posts ◦Secured at multiple points Even small vibrations can destroy a hologram

10. Laser Specifications Uniphase 105-1 ◦Helium-Neon(HeNe) gas laser ◦633nm median wavelength ◦5mW maximum output power ◦30cm approximate coherence length

11. JD-4 Developer Part A ChemicalQuantity Metol (p-Methylaminophenol sulfate)2g Ascorbic Acid (powder)12.5g Distilled Water500mL Part B ChemicalQuantity Sodium Carbonate, Anhydrous35g Sodium Hydroxide7.5g Distilled Water500mL Bleach ChemicalQuantity Copper Sulfate, Pentahydrate17.5g Potassium Bromide50g Sodium Bisulfate, Monohydrate2.5g Distilled Water500mL

12. Developing TraySolutionMethod 1Distilled WaterSoak, 30s 2A+B DeveloperAgitate until black, 30s 3Distilled WaterRinse, 60s 4BleachAgitate until clear, 30s 5Distilled WaterRinse, 60s 6PhotoFloSoak, 30s

13. Camera Configuration 1

14. Camera Configuration 2

15. Exposure Results

16. Conclusions Vibration control ◦Secure optical instruments ◦Better plate holder Supplies ◦Adequate developing solution ◦New photographic plates

17. Applications of Holography

18. References http://www.fou.uib.no/fd/1996/h/404001/kap02.htm