QZFM Gen-3

The sensor head operates at room temperature and fully integrates the laser with other components, eliminating the complexities from fiber optics or cryogenics. Each QZFM is self-calibrating and can simultaneously measure field components along two or three axes. The compact electronics module with a dedicated microprocessor provides all necessary functionality to simply operate the sensor with a few clicks of the mouse.
→ No consumables, no fiber optics, completely standalone

Technical Specifications:

Field Sensitivity:
Dual Axis Variant: <15 fT/√Hz in 3-100 Hz band (typical 7-10 fT/√Hz)
Triax Variant: <23 fT/√Hz in 3-100 Hz band (typical 15 fT/√Hz all axis simultaneous)
Dynamic Range: ±5 nT
Measurement Axes:
Dual Axis Variant: Z-axis only / Y-axis only / Dual Z & Y axes (simultaneous)
Triax Variant: All three simultaneous
Standoff: 6.5 mm (center of the vapor cell to outside of housing)
Calibration: Internal reference (automated)
Signal Outputs: Analog, USB Digital
Dimensions: 12.4×16.6×24.4 mm (sensor) / 3.1×11.0x16.5 cm (electronics) [schematic] Power consumption: 5W total (0.7 W sensor head)
Cable length: 6.5 m (standard)
Atomic species: Rubidium

Included:

Sensor, control electronics, power supply, cables, software

Requirements:

• Ambient magnetic field below 50 nT
• 64-bit computer with Windows 7 or later

Key Applications:

Magnetoencephalography (MEG), fetal magnetocardiography (fMCG), magnetic relaxometry, research

A typical noise floor of the QZFM sensors

A typical noise floor of a QZFM measured inside a small 3-layer mu-metal magnetic shields with an inner ferrite layer. The noise traces include both single and simultaneous dual axis measurements.

QZFM Response vs. Magnetic Field Amplitude

Text and figures from https://quspin.com/products-qzfm/