Multistage Cavity Housings: VH 6100
When cavity temperature control is paramount, our multi-stage vacuum housing for cylindrical and spherical cavities is the ideal solution.
Multiple isolated nesting shells surround the optical cavity, encapsulating it in a highly isothermal environment. With thermal time constants on the scale of days, your cavity remains impervious to hourly or daily lab temperature fluctuations. A carefully crafted shell design ensures that spurious blackbody radiation doesn’t directly impinge upon the cavity. Our multi-stage cavity vacuum housing provides the best performance – period – for your optical atomic clock or spectroscopy research.
Get unsurpassed stability with the ultimate in thermal isolation
Performance & Specs
| Frequency Drift | < 15 kHz/day at zero crossing temperature, 1550 nm |
| Temperature Drift | < 1 mK/°C |
| Temperature Control Range | 5 – 50°C |
| Thermal Time Constant | > 4 days |
| Achievable Pressure | < 10-6 Torr |
| Viewports | AR coated windows angled at 2° with respect to can axis |
| Fittings | Stainless steel tee with two Conflat fittings for ion pump & valve |
| Temperature Control | 6 thermoelectric heaters |
| Thermistors | Six: 10 kΩ @ 25°C |
| Weight | 50 kg |
Features
- Maximum thermal and blackbody radiation shielding
- Choice of 3 or 4 nested shells, depending on thermal insulation required
- < 5 mK/°C temperature drift over a wide operating temperature range (5 – 50°C)
- Thermal time constant of > 4 days
Engineering Diagram
Customization Options
- Adaptation for spherical and cube cavities
- Three or four stages of temperature control, higher upon request
- Each cavity housing is built to order and fully customized to the application
- TEC cooling option in place of heating