ATLAS 685 – Red wavelength-tunable laser
A red wavelength-tunable laser well-suited for spectroscopy of Strontium (Sr) atoms for applications such as atom cooling, atomic clocks, quantum computing and many more.

Laser Specifications
| Parameter | Specified Values |
|---|---|
| Center wavelength | 685 nm ± 5 nm |
| Wavelength range | ≥ 10 nm |
| Wavelength resolution | ≤ 4 pm |
| Wavelength accuracy | ± 10 pm |
| Wavelength switching time | 20 ms |
| Fiber output power | ≥ 1 mW |
| Intrinsic linewidth | ≤ 100 kHz |
| Side-mode suppression ratio | ≥ 40 dB |
| Modulation bandwidth of diode current | 500 kHz |
Key features
- Visible wavelength tunability
- Ultra-narrow linewidth
- Fully integrated with no moving parts, enabling switching between wavelengths instantly
- Excellent repeatability
- Software based wavelength calibration
- Easy to set-up and use
- Compact size (100*60*20 mm)
- Fiber connector PM FC/APC
Applications
- Sensing market (biomedical, infrastructure and vibration)
- Quantum Key Distribution
- Spectroscopy
- Coherent Communications

ATLAS Adapter
The base module comes equipped with a standard DE9 connector. We offer an add-on module featuring connectors for power, communication (USB-C) and trigger signals (SMA).
To meet laser safety standards, this module adds key control and a remote interlock connector.
Intuitive Software for Seamless Laser Operation
For intuitive operation and control, we provide a software interface which includes a graphical user interface (GUI) for straightforward wavelength setting and tuning, along with a Python library for advanced laser control functions.
Download the ATLAS Graphical User Interface here. Check out our online Python library on our Github profile.

Got more questions about the ATLAS Laser?
➤ Check out our FAQ page — a section dedicated to ATLAS covers the most common questions and answers.

Explore other ATLAS modules: The ATLAS family of wavelength-tunable lasers comes in a range of models: 685 nm, 850 nm, 1550 nm, 1600 nm, and 1700 nm.


