| Re-usable | processing | Type of halogram |
Max.efficiency | Required exposure[mJ/cm2] | Resolution limit[mm-1 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Photo-graphic emulsions | No | Wet |
|
0.001–0.1 | 1,000–10,000 | |||||
| Dichro-mated gelatin | No | Wet | Phase | 100% | 10 | 10,000 | ||||
| Photo resists | No | Wet | Phase | 33% | 10 | 3,000 | ||||
| Photo thermo plastics | No | Charge and heat | Phase | 33% | 0.01 | 5,00–1,200 | ||||
| Photo polymers | No | post exposure | Phase | 100% | 1–1,000 | 2,000–5,000 | ||||
| Photo chromics | Yes | None | Amplitude | 2% | 10,100 | >5,000 | ||||
| Photo refractives | Yes | None | Phase | 100% | 0.1–50,000 | 2,000–10,000 | ||||
| It is also possible to make halographic recordings using digital cameras. | ||||||||||
Note that these do not include the materials used in the mass replication of an existing hologram. The resolution limit given in the table indicates the maximal number of interference lines per mm of the gratings. The required exposure is for a Short exposure times (less than 1/1000th of second, such as with a pulsed laser) require a higher exposure due to reciprocity failure.