L3-DVT-5DQ-WRITE
CRITICAL
PRESERVATION
Level 3 · hardware
5D Disc Writer
Femtosecond Laser Writer for 5D Discs
Femtosecond-laser writer creating nanostructure dots in fused-silica discs, with sub-micron positioning accuracy and per-dot encoding.
Purpose
Femtosecond-laser writer creating nanostructure dots in fused-silica discs, with sub-micron positioning accuracy and per-dot encoding.
Context
Child of L2-DVT-5DQ within the Lunar Ark system
Principles
- ▸Femtosecond laser at 500-1000 nm wavelength
- ▸Pulse energy ~1 microjoule
- ▸Voxel size ~200 nm
- ▸Write rate ~1 Gbps (3-bit voxel at MHz rate)
- ▸Long-life solid-state laser source
Typical implementations
- ▸University of Southampton femtosecond writer
- ▸Microsoft Silica writer
- ▸SPhotonix commercial writer
Lunar considerations
- ▸Write operation high-energy — coordinated with L1-PDM
- ▸Long-mission laser maintenance
- ▸Vacuum environment helps optical alignment
Specifications
Functional
| primary function | Femtosecond-laser writer creating nanostructure dots in fused-silica discs, with sub-micron positioning accuracy and per-dot encoding. |
| write rate gbps | 1 |
| discs per day | 5 |
Physical
| mass kg | 80 |
| materials | Femtosecond fiber laser, Sub-um positioning stage, Optical alignment |
| vacuum compatibility | True |
Operational
| power consumption w | 500 |
| thermal range c | -40, 70 |
| lifetime years | 20 |
| mtbf hours | 30000 |
Interfaces
Provides
- Written nanostructures in disc
Requires
- Laser + stages (~500 W)
- Encoded data stream
Cite this entry
Lunar Ark Codex. "5D Disc Writer" (L3-DVT-5DQ-WRITE). Retrieved 10 September 2026, from https://lunarark.com/entry/L3-DVT-5DQ-WRITE
Licensed CC-BY-SA 4.0. You may reuse and adapt this entry with attribution, under the same licence.