Four-Wavelength Beam Splitter ModulePluggable
780 / 795 / 852 / 895 nm · low-CTE base · no alignment required
A pluggable four-wavelength combining and splitting module for cold-atom systems. Its four selectable bands — 780, 795, 852 and 895 nm — cover exactly the rubidium (D2/D1) and caesium (D2/D1) cold-atom lines, letting you combine multiple lasers and split them to multiple outputs. Built on a low-thermal-expansion material base with every internal optic factory pre-aligned and fixed, its beam pointing barely drifts with temperature and it runs continuously for over 2 years without maintenance — compact, highly stable and wide in wavelength coverage. The plug-in design supports fast exchange and reconfiguration — the ideal beam-distribution solution for MOT cooling/repump optics, atom interferometry and compact quantum-sensing instruments.
Key Features
Move your beam-splitting optics off the table and into one stable box.
Four-Band Combine & Split
Selectable and mixable 780 / 795 / 852 / 895 nm — one module serves the cooling and repump optics of both Rb and Cs systems.
Long-Term Stable, Maintenance-Free
A low-CTE base and high-reliability optomechanics — beam pointing barely drifts with temperature, and the module runs continuously for over 2 years with no realignment or maintenance.
Pluggable Design
Modular plug-in mounting: swap bands or splitting configurations in minutes and reconfigure the optical path without realignment.
Compact Footprint
Integrates a tabletop's worth of combining/splitting optics into one small module — freeing precious space in portable instruments.
Factory Pre-Aligned
Mirrors and beam splitters are pre-aligned and fixed at the factory — working on arrival, with no on-site alignment risk; the splitting ratio can be adjusted by the user without realignment.
Works With LinQ Products
Plugs straight into LinQ's 2D-MOT and 3D-MOT cold-atom sources — a complete chain from laser distribution to cold-atom output.
Specifications
Contact us for a quote or further technical information.
| Form Factor | Pluggable optical module |
|---|---|
| Selectable Bands | 780 nm / 795 nm / 852 nm / 895 nm (covering Rb D2/D1, Cs D2/D1) |
| Function | Four-wavelength beam combining and splitting |
| Base Material | Low-thermal-expansion material, minimal thermal drift |
| Optics | Factory pre-aligned and fixed — no on-site alignment |
| Fiber Interface | FC/APC (polarization-maintaining optional) |
| Polarization Extinction Ratio | ≥ 23 dB @ 780 nm (PM configuration) |
| Insertion Loss | < 2.3 dB (total output vs. input) |
| Splitting Ratio | Factory preset, adjustable by the user |
| Output Balancing | Better than 5 % |
| Operating Temperature | 15 – 35 °C |
| Stability | Minimal beam-pointing drift with temperature; over 2 years of continuous, maintenance-free operation |
| Size | Compact package |
| Mounting | Plug-in — fast installation and exchange |
Application Fields
MOT Optics
Combining, splitting and delivering Rb/Cs cooling and repump light — the natural partner for 2D-MOT / 3D-MOT.
Atom Interferometry & Raman Optics
Stable multi-wavelength splitting and combining for interferometers, gravimeters and gyroscopes.
Compact Quantum Sensors
A compact, high-stability distribution solution for transportable and vehicle-mounted quantum-sensing instruments.
Research Optical Setups
Replaces repetitively built tabletop splitting optics — experiments start faster and results reproduce better.
Install your beam optics once — and trust them for years
Want band combinations, splitting configurations, or a quote? Get in touch with our team.
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